定价： 345元 / 折扣价： 294 元

This specification covers aluminum and aluminum-alloy seamless pipe and seamless extruded tube for gas and oil transmission and distribution piping systems. The pipe and tube shall be produced from hollow extrusion ingot (cast in hollow form or pierced) and shall be extruded by use of the die and mandrel method. The pipe and tube shall conform to the chemical composition requirements specified. The determination of chemical composition shall be made in accordance with suitable chemical (test methods E 34), or spectrochemical (test methods E 227, E 607, and E 1251) methods. Heat treatment for the production of T1 and T5-type tempers shall be in accordance with Practice B 807, and for the production of T4 and T6-type tempers, except as noted, shall be in accordance with practice B 918. Unless otherwise specified, alloys 6061, 6063, and 6351 may be solution heat treated and quenched at the extrusion press in accordance with practice B 807 for the production of T4 and T6-type tempers, as applicable. The material shall conform to the tensile property requirements specified. The tension tests shall be made in accordance with test methods B 557 and B 557M. Pipe and tube heat treated at the extrusion press shall conform to all requirements specified.1.1 This specification covers seamless pipe and seamless extruded tube in the aluminum and aluminum alloys (Note 1) and tempers listed in Table 1 and Table 2, respectively. Seamless pipe and seamless tube are intended for use in applications involving internal pressure.Note 1—Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy.Note 2—For drawn seamless tubes, see Specifications B210 and B210M; for extruded tubes, Specifications B221 and B221M; for drawn seamless tubes for condensers and heat exchangers, Specifications B234 and B234M; for seamless pipe and seamless extruded tube, B241/B241M; for round welded tubes, Specification B313/B313M; for seamless condenser and heat exchanger tubes with integral fins, Specification ; for extruded structural pipe and tube, Specification B429/B429M; and for drawn tube for general purpose applications, Specification B483/B483M.1.2 Alloy and temper designations are in accordance with ANSI H35.1 [H35.1M]. The equivalent Unified Numbering System alloy designations are those of Table 3 preceded by A9, for example, A93003 for aluminum alloy 3003 in accordance with Practice E527.1.3 For acceptance criteria for inclusion of new aluminum and aluminum alloys in this specification, see Annex A2.1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.TABLE 1 Tensile Property Limits for Extruded Seamless PipeA,BAlloy Temper Pipe Size,in. Strength, min, ksi [MPa] ElongationC,DTensile Yield (0.2 % Offset) in 2 in. [50 mm] or 4×Diameter, min, % in 5 × D(5.65)3003 H18 under 1 27.0 [185] 24.0 [165] 4 4 H112 1 and over 14.0 [95] 5.0 [35] 25 226061 T6 under 1 38.0 [260] 35.0 [240] 8 ... 1 and over 38.0 [260] 35.0 [240] 10E 96063 T6 all 30.0 [205] 25.0 [170] 8 76351 T5T6 allall 38.0 [260]42.0 [290] 35.0 [240]37.0 [255] 10E10F 99A The basis for establishment of mechanical property limits is given in Annex A1 of this specification.B To determine conformance to this specification, each value for tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi [MPa] and each value for elongation to the nearest 0.5 %, both in accordance with the rounding method of Practice E29.C Elongation of full-section and sheet-type specimens is measured in 2 in.; of cut-out round specimens, 4× specimen diameter.D Elongations in 50 mm apply for pipe tested in full sections and for sheet-type specimens machined from material up through 12.5 mm in thickness having parallel surfaces. Elongations in 5 × D (at 5.65), where D and A are diameter and cross-sectional area of the specimen, respectively, apply to round test specimens machined from thicknesses over 6.30 mm.E The minimum elongation for a wall thickness up through 0.249 in. [6.3 mm] is 8 %.F For wall thickness 0.124 in. [3.20 mm] and less, the minimum elongation is 8 %.TABLE 2 Tensile Property Limits for Extruded Seamless TubeA,BTemper Specified WallThickness, in. [mm] Area, in.2 [mm2] Tensile Strength, ksi [MPa] Yield Strength(0.2 % offset)ksi [MPa], min ElongationC,Dmin max in 2 in. [50 mm] or4 × D min,% in 5 × D(5.65)EAluminum 1060FOH112 allall allall 8.5 [60]8.5 [60] 14.0 [95]... [...] 2.5 [15]2.5 [15] 2525G 2222GAlloy 3003FOH112 allall allall 14.0 [95]14.0 [95] 19.0 [130]... [...] 5.0 [35]5.0 [35] 2525 2222Alloy Alclad 3003FOH112 allall allall 13.0 [90]13.0 [90] 18.0 [125]... [...] 4.5 [30]4.5 [30] 2525 2222Alloy 5083FOH111H112 all [130.00]all [130.00]all [130.00] up through 32.0 [20 000]up through 32.0 [20 000]up through 32.0 [20 000] 39.0 [270]40.0 [275]39.0 [270] 51.0 [350]... [...]... [...] 16.0 [110]24.0 [165]16.0 [110] 141212 121010Alloy 5086FOH111H112 all [130.00]all [130.00]all [130.00] up through 32.0 [20 000]up through 32.0 [20 000]up through 32.0 [20 000] 35.0 [240]36.0 [250]35.0 [240] 46.0 [315]... [...]... [...] 14.0 [95]21.0 [145]14.0 [95] 141212 121010Alloy 6061FOH all all ... [...] 22.0 [150] 16.0I [...] 16 14T1 [16.00] all [180] ... [...] [95] 16 14 all all 26.0 [180] ... [...] 16.0 [110] 16 14T42J all all 26.0 [180] ... [...] 12.0 [85] 16 14T51 [16.00] all [240] ... [...] [205] 8 7 up through 0.249 [6.30]0.250 and over [6.30] allall 38.0 [260]38.0 [260] ... [...]... [...] 35.0 [240]35.0 [240] 810 ...9Alloy 6063FOHT1K allup through 0.500 [12.50]0.501–1.000 [12.50–25.00] ... [all]allall ... [...]17.0 [115]16.0 [110] 19.0 [130]... [...]... [...] ... [...]9.0 [60]8.0 [55] 181212 [...] 161010T4, T42L up through 0.500 [12.50] all 19.0 [130] ... [...] 10.0 [70] 14 12 0.501–1.000 [12.50–25.00] all 18.0 [125] ... [...] 9.0 [60] 14 [...] 12T5 up through 0.500 [12.50] all 22.0 [150] ... [...] 16.0 [110] 8 7 0.501–1.000 [12.50–25.0] all 21.0 [145] ... [...] 15.0 [105] 8 [...] 7T52 up through 1.000 [25.00] all 22.0 [150] 30.0 [205] 16.0M [110] 8 7T6, T62L up through 0.124 [3.20] all 30.0 [205] ... [...] 25.0 [170] 8 ... 0.125–1.000 [3.20–25.00] all 30.0 [205] ... [...] 25.0 [170] 10 7Alloy 6070FT6, T62L up through 2.999 up through 32 48.0 [330] ... [...] 45.0 [310] 6 5Alloy 6351FT4T6 allup through 0.1240.125–0.749 all...... 32.0 [220]42.0 [290]42.0 [290] ... [...]... [...]... [...] 19.0 [130]37.0 [255]37.0 [255] 16810 14...9A The basis of establishment of mechanical property limits is given in Annex A1 of this specification.B To determine conformance to this specification, each value for ultimate tensile strength and for yield strength shall be rounded to the nearest 0.1 ksi [MPa] and each value for elongation to the nearest 0.5 %, both in accordance with the rounding method of Practice E29.C Elongation of full-section and sheet-type specimens is measured in 2 in.; of cut-out round specimens, in 4× specimen diameter.D For material of such dimensions that a standard test specimen cannot be taken, or for material thinner than 0.062 in., the test for elongation is not required.E Elongations in 50 mm apply for tube tested in full section and for sheet-type specimens machined from material up through 12.5 mm in thickness having parallel surfaces. Elongations in 5× diameter (5.65), where D and A are diameter and cross-sectional area of the specimen, respectively, apply to round test specimens machined from thickness over 6.30 mm. For tube of such dimensions that a standard test specimen cannot be taken, the test for elongation is not required.F These alloys are also produced in the F temper, for which no mechanical properties are specified.G Maximum tensile strength and minimum elongation apply to tubes having diameters from 1.000 in. to 4.500 in. and wall thickness from 0.050 in. to 0.169 in. only. Minimum elongation applies to tubes having diameters from 25.00 to 115.00 mm and wall thickness over 1.30 through 4.30 mm only.H Upon heat treatment, annealed (0 temper) material shall be capable of developing the mechanical properties applicable to T42 temper material, and upon solution and precipitation heat treatment shall be capable of developing the mechanical properties applicable to T62 temper material.I Yield strength is maximum [110 MPa] max.J For stress-relieved tempers (T4510, T4511, T6510 and T6511) characteristics and properties other than those specified may differ somewhat from the corresponding characteristics and properties of material in the basic temper.K Formerly designated T42 temper. Properly aged precipitation heat-treated 6063-T1 extruded products are designated T5.L While material in the T42 and T62 tempers is not available from the material producer, the properties are listed to indicate those which can usually be obtained by the user when the material is properly solution heat treated or solution and precipitation heat treated from the O (annealed) or F (as-fabricated) tempers. These properties apply when samples of material supplied in the O or F temper are heat treated by the producer to the T42 or T62 tempers to determine that the material will respond to proper thermal treatment. Properties attained by the user, however, may be lower than those listed if the material has been formed or otherwise cold or hot worked, particularly in the annealed temper, prior to solution heat treatment.M Maximum yield strength is 25.0 ksi [170 MPa].TABLE 3 Chemical CompositionA,B,CAlloy Composition, %Silicon Iron Copper Manganese Magnesium Chromium Zinc Vanadium Titanium Other ElementsD AluminumEach TotalE10603003 0.250.6 0.350.7 0.050.05–0.20 0.031.0–1.5 0.03... ...... 0.050.10 0.05... 0.03... 0.030.05 ...0.15 99.60 minFremainderAlclad 3003 3003 alloy clad inside or outside with 7072 alloy5083 0.40 0.40 0.10 0.40–1.0 4.0–4.9 0.05–0.25 0.25 ... 0.15 0.05 0.15 remainder5086 0.40 0.50 0.10 0.20–0.7 3.5–4.5 0.05–0.25 0.25 ... 0.15 0.05 0.15 remainder6061G 0.40–0.8 0.7 0.15–0.40 0.15 0.8–1.2 0.04–0.35 0.25 ... 0.15 0.05 0.15 remainder6063 0.20–0.6 0.35 0.10 0.10 0.45–0.9 0.10 0.10 ... 0.10 0.05 0.15 remainder6070 1.0–1.7 0.50 0.15–0.40 0.40–1.0 0.50–1.2 0.10 0.25 ... 0.15 0.05 0.15 remainder6351 0.7–1.3 0.50 0.10 0.40–0.8 0.40–0.8 ... 0.20 ... 0.20 0.05 0.15 remainder7072H 0.7 Si + Fe 0.10 0.10 0.10 ... 0.8–1.3 ... ... 0.05 0.15 remainderA Limits are in percent maximum unless shown as a range or stated otherwise.B Analysis shall be made for the elements for which limits are shown in this table.C For purposes of determining conformance to these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit, in accordance with the rounding method of Practice E29.D Others includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover all metallic Others elements. Should any analysis by the producer or the purchaser establish that an Others element exceeds the limit of Each or that the aggregate of several Others elements exceeds the limit of Total, the material shall be considered non-conforming.E Other ElementsTotal shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.F The aluminum content shall be calculated by subtracting from 100.00 % the sum of all metallic elements present in amounts of 0.010 % or more each, rounded to the second decimal before determining the sum.G In 1965 the requirements for Alloy 6062 were combined with those of Alloy 6061 by revision of the minimum chromium content from 0.15 to 0.04. For this reason, Alloy 6062 was cancelled.H Composition of cladding alloy as applied during the course of manufacture. The sample from finished tube shall not be required to conform to these limits.

定价： 0元 / 折扣价： 0 元

This specification establishes the performance characteristics required for mechanically attached fittings (MAFs) for use in piping and tubing systems. These fittings directly attach to pipe or tube by mechanical deformation of the pipe or tube or fitting, or a combination thereof, creating a seal and a restrained joint. process. MAFs covered here are classified into the following design types: Type I—radially swaged MAF (permanent); Type II—flared MAF (separable); Type III—flareless (bite-type) MAF (separable); Type IV—grip-type MAF (separable); Type V—shape memory alloy (SMA) MAF (permanent); and Type VI—axially swaged MAF (permanent). Moreover, the MAFs shall be made from on or more of the following material grade: Grade A—carbon steel; Grade B—stainless steel; Grade C—nickel-copper; Grade D—copper-nickel; Grade E—brass; and Grade F—nickel titanium. The MAFs shall also be grouped into ten classes according to their pressure ratings. The standard qualification tests to which the MAFs shall perform satisfactorily are pneumatic proof test, hydrostatic proof test, impulse test, flexure fatigue test, tensile test, hydrostatic burst test, repeated assembly test, rotary flexure test, and mercurous nitrate test. Successful completion of the tests described constitutes completion of the technical portion of the qualification1.1 This specification establishes the performance characteristics required for mechanically attached fittings (MAFs) for use in piping and tubing systems. These fittings directly attach to pipe or tube by mechanical deformation of the pipe or tube or fitting, or a combination thereof, creating a seal and a restrained joint. The seal may be created via the mechanical deformation or created independently. Successful completion of the tests described constitutes completion of the technical portion of the qualification process.1.2 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified in part or whole by the purchaser in the order. Unless otherwise specified, U.S. Navy contracts shall invoke the supplementary requirements in whole.1.3 Unless specific MAF types are specified, the term “MAF” shall apply to all types described herein.1.4 The tests specified in Section 13 and described in Annex A1 and the Supplementary Requirements Section are applicable only to ascertain the performance characteristics of MAFs. These tests are not intended for use in the evaluation of non-MAF products.1.5 A fire performance test is specified in Supplementary Requirement S7. This test provides general guidelines to determine the responsiveness of MAFs when subjected to fire. This test should not be considered for use to evaluate non-MAF products.1.6 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.1.7 The following safety hazards caveat applies only to the tests listed in Section 13 and the tests described in the Supplementary Requirements Section and the annexes of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 843元 / 折扣价： 717 元 加购物车

This specification covers hot-wrought and cold-finished special quality carbon steel bars, in straight lengths only, subject to mechanical property requirements and intended for use in manufacturing components for pressure piping and other pressure-containing applications. The steel bars are furnished in Grade B and Grade C and shall be made by melting, deoxidation, hot and cold working, heat treatment, and shall have special quality. Heat and product analyses shall be performed on the material and the chemical composition shall conform to the values required in carbon, manganese, phosphorus, sulfur, silicon, and lead. The carbon steel shall undergo tensile testing and conform to the required tensile strength, yield strength, and elongation.1.1 This specification2 covers hot-wrought and cold-finished special quality carbon steel bars, in straight lengths only, subject to mechanical property requirements and intended for use in manufacturing components for pressure piping and other pressure-containing applications.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

4.1 The requirements of this specification are intended to provide information to select, design and install thermoplastic, water-pressure piping systems. Materials covered in this specification are Poly(Vinyl Chloride) (PVC), Chlorinated Poly(Vinyl Chloride) (CPVC) and Polyethylene (PE) plastic pipe fittings.1.1 This guide is intended for use in the selection, design, and installation of thermoplastic water-pressure piping systems. For specific projects, a thorough review of this guide is recommended for the purpose of selecting specific materials, methods of joining, system design factor, and any special procedures deemed necessary to assure a satisfactory system.NOTE 1: Comprehensive information on the selection, design, joining, system design factors, installation and special products and piping systems for pressurized water and other specialized applications is available in the PPI Handbook of Polyethylene Pipe and from other domestic and International sources such as PE compound and product manufacturers and trade associations.1.2 It is recommended that governing codes and project specifications be consulted prior to the use of this guide. Nothing in this guide should be construed as recommending practices or systems at variance with governing codes and project specifications.1.3 The pipe, fittings, and joining materials shall meet the requirements of one or more of the following component product standards listed in 1.3.1 through 1.3.4 to the extent applicable. In 1.3.1, 1.3.2, and 1.3.4 the pipe standards followed by (a) are outside diameter-controlled pipes.1.3.1 For poly(vinyl chloride) (PVC) plastic piping components:  Title of Specification ASTMDesignationPoly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80 and 120 (a) D1785Poly(Vinyl Chloride) (PVC) Plastic Pipe (SDR-PR) (a) D2241Threaded Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 D2464Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 D2466Socket-Type Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 D2467Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Pipe and Fittings D2564Bell-End Poly(Vinyl Chloride) (PVC) Pipe (a) D2672Poly(Vinyl Chloride) (PVC) Plastic Tubing (a) D2740Socket-Type Poly(Vinyl Chloride) (PVC) Plastic Line Couplings D3036Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals D3139Elastomeric Seals (Gaskets) for Joining Plastic Pipe F477PVC and ABS Injected Solvent Cemented Plastic Pipe Joints F5451.3.2 For Chlorinated Poly(Vinyl chloride) (CPVC) plastic piping components: Title of Specification ASTMDesignationChlorinated Poly(Vinyl chloride) (CPVC) Plastic Pipe, Schedules 40 and 80 (a) F441/F441MChlorinated Poly(Vinyl chloride) (CPVC) Plastic Pipe Fittings, Schedule 80 F439Solvent Cements for Chlorinated Poly(Vinyl chloride) (CPVC) Plastic Pipe and Fittings F4931.3.3 Standards for polyethylene (PE) plastic piping:  ASTM Standard DesignationStandard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter D2239Standard Specification for Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe D2609Standard Specification for Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing D2683Standard Specification for Polyethylene (PE) Plastic Tubing D2737Standard Practice for Underground Installation of Thermoplastic Pressure Piping D2774Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing D3261Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter D3035Standard Specification for Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter F714Standard Specification for Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing F1055Standard Specification for Socket Fusion Tools for Use in Socket Fusion Joining Polyethylene Pipe or Tubing and Fittings F1056Standard Practice for Electrofusion Joining Polyolefin Pipe and Fittings F1290Standard Specification for Deformed Polyethylene (PE) Liner F1533Standard Guide for Construction Procedures for Buried Plastic Pipe F1668Standard Practice for Field Leak Testing of Polyethylene (PE) and Crosslinked Polyethylene (PEX) Pressure Piping Systems Using Hydrostatic Pressure F2164Standard Specification for Fabricated Fittings of Butt-Fused Polyethylene (PE) F2206Standard Practice for Heat Fusion Joining of Polyethylene Pipe and Fittings F2620Standard Test Method for Laboratory Testing of Polyethylene (PE) Butt Fusion Joints using Tensile-Impact Method F2634Standard Practice for Field Leak Testing of Polyethylene (PE) Pressure Piping Systems Using Gaseous Testing Media Under Pressure (Pneumatic Leak Testing) F2786Standard Specification for Lap-Joint Type Flange Adapters for Polyethylene Pressure Pipe in Nominal Pipe Sizes ¾ in. to 65 in. F2880Standard Practice for Specimens and Testing Conditions for Testing Polyethylene (PE) Pipe Butt Fusions Using Tensile and Hydrostatic Test Methods F2928Standard Specification for Billets made by Winding Molten Extruded Stress-Rated High Density Polyethylene (HDPE) F3034Standard Specification for Metric Outside Diameter Polyethylene (PE) Plastic Pipe (DR-PN) F3123Standard Practice for Data Recording the Procedure used to Produce Heat Butt Fusion Joints in Plastic Piping Systems or Fittings F3124Standard Practice for Guided Side Bend Evaluation of Polyethylene Pipe Butt Fusion Joint F3183Standard Practice for Heat Fusion Equipment (HFE) Operator Qualification on Polyethylene (PE) and Polyamide (PA) Pipe and Fittings F3190AWWA Standards  Standards Polyethylene (PE) Pressure Pipe and Tubing, 1/2 in. (13 mm) Through 3 in. (76 mm), for Water Service C901Polyethylene (PE) Pressure Pipe and Fittings, 4 In. Through 65 In. (100 mm Through 1,650 mm), for Waterworks C906CSA Standards  Standards Definitions, general requirements, and methods of testing for thermoplastic pressure piping B137.0Polyethylene (PE) pipe, tubing, and fittings for cold water pressure services B137.11.3.4 For poly(vinyl chloride) (PVC) Plastic Piping Components Issued By the American Water Works Association: C900 Poly(Vinyl Chloride) (PVC) Pressure Pipe,4-inch through 12-inch, for Water (a) 1.3.5 Pipes with wall thicknesses less than 1.50 mm (0.06 in.) are not recommended.1.4 Other Joining Devices—Joining devices other than those covered by the listed standards may be selected by the user on the basis of his own engineering evaluation and service experience.1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

This specification describes the properties of devices or assemblies suitable for use as flexible transition couplings for underground drainage and sewer piping systems. Couplings that may include bushings or inserts, and meet the requirements of this specification are suitable for joining plain end pipe or fittings. Couplings shall be permitted to have a center stop, the components shall be designed so that the elastomeric material is compressed to form a hydrostatic seal when the joint is assembled. Assemblies shall be tested in different areas and each component shall conform to specified physical and mechanical requirements, namely: hardness, tensile strength, elongation, heat aging, hardness, ozone resistance, water absorption, and chemical resistance for the elastomeric materials; tension band performance, torque resistance, free running torque for the stainless steel materials; and deflection sealing resistance, and shear loading resistance for the joint assemblies.1.1 This specification describes the properties of devices or assemblies suitable for use as flexible transition couplings, hereinafter referred to as “couplings,” for underground drainage and sewer piping systems.1.2 Flexible transition couplings that conform to the requirements of this standard are suitable for joining plain-end pipe or fittings. The pipe to be joined shall be of similar or dissimilar materials, size, or both.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.4 The ASTM standards referenced herein shall be considered mandatory.1.5 The committee with jurisdiction over this standard is not aware of another comparable standard for materials covered in this standard.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

5.1 If required by the authority having jurisdiction, pressurized gaseous testing media leak testing is conducted after installation to discover and correct or repair leaks or faults in a newly constructed or modified PA12 pressure piping system before placing the system in service. Leakage or faults most commonly occur at connections, joints, and mechanical seals where sealing under pressure is required.5.2 Safety is of paramount importance when conducting pressurized gaseous testing media leak tests because testing results include no leaks, leaks, sudden violent rupture, or catastrophic failure.5.3 Systems that contain lower pressure rated or non-pressure rated components that cannot be isolated or removed from exposure to test pressure, or where temporary caps or closures are not practical, are not suitable for testing in accordance with this practice.5.4 Leakage Allowance—Leakage is not allowed for butt and electrofusion joints, and restrained gas-tight mechanical joints. See 7.6. Contact the joint, connection or component manufacturer for leakage correction information if leakage occurs at a joint, connection or component having a mechanical seal.5.5 Poisson-Effect Expansion and Contraction—When test pressure is applied to plastic piping systems that have fully restrained joints such as heat fusion, electrofusion, bolted flanges, etc., either reduction of overall pipe length or an increase in longitudinal stress results from diametrical expansion of the pipe. Disjoining (pull-out) of partially restrained or non-restrained connections or joints, such as some in-line mechanical connectors having insufficient resistance to pull-out stress or length reduction, is possible when partially restrained or unrestrained joints are in-line with the fully restrained test section. To prevent Poisson-effect disjoining of partially restrained or non-restrained joints take measures such as installing external joint restraints (diametrical clamps and tie-rods) on in-line partially restrained or non-restrained joints, installing in-line thrust anchors at the ends of fully restrained piping sections to prevent end movement of the fully restrained section, or isolating a fully restrained test section from piping with unrestrained or partially restrained joints.NOTE 3: A tensile stress applied to a material will cause elongation in the direction of the applied stress, and will cause a decrease in dimension at right angles to the direction of the applied stress. The ratio of decrease to elongation is the Poisson ratio. Under test pressure, piping materials will expand slightly in diameter and contract in length slightly according to the Poisson ratio of the material.1.1 This practice provides information on apparatus, safety, pre-test preparation, and procedures for conducting field tests of polyamide-12 (PA12) pressure piping systems after installation using gaseous testing media such as un-odorized inert non-toxic gas or air, and applying pressure to determine if leaks exist in the system (pneumatic leak testing). This practice applies only to testing to discover leakage. Testing for other purposes such as testing to establish operating pressure is beyond the scope of this practice.1.2 Leak testing with pressurized gaseous testing media shall be used only if one or both of the following conditions exists:1.2.1 The piping system is so designed that it cannot be filled with a liquid, or1.2.2 The piping system service cannot tolerate traces of liquid testing media.1.3 Where hydrostatic testing is specified in contract documents or by the authority having jurisdiction, testing using pressurized gaseous testing media (pneumatic) testing shall not be substituted without the express consent and authorization of the authority having jurisdiction.1.4 Some manufacturers prohibit or restrict testing of their products with pressurized gaseous testing media. Contact component manufacturers for information. Where the manufacturer of a test section component prohibits or restricts testing with pressurized gaseous testing media testing in accordance with this practice shall not be used without the express consent and authorization of the authority having jurisdiction and the component manufacturer.NOTE 1: Components that are not suitable for testing with gaseous testing media may not be suitable for service with pressurized gas.1.5 This practice does not address leak testing using pressurized liquids (hydrostatic testing). For field leak testing using pressurized liquids, consult the manufacturer for guidance.1.6 This practice does not apply to leak testing of non-pressure, negative pressure (vacuum), or non-PA12 (polyamide-12) piping systems.1.7 This practice does not apply to fuel gas piping systems that extend from the point of delivery to the appliance connections. For other than undiluted liquefied petroleum gas (LP-Gas) systems, the point of delivery shall be considered to be the outlet of the service meter assembly or the outlet of the service regulator or service shutoff valve where no meter is provided. For undiluted LP-Gas, the point of delivery shall be considered to be the outlet of the final pressure regulator, exclusive of line gas regulators, in the system. This practice does not apply to LP-Gas systems covered under NFPA 58.1.8 This practice is intended for use with PA12 pressure piping that conveys gaseous media under pressure (compressed gas) if the owner or operator or installer of the line does not have an established leak testing procedure that is acceptable to the authority having jurisdiction.1.9 Warning—Failure during a pressurized gaseous testing media leak test can be extremely violent and dangerous because energy that is applied to compress the gaseous testing media and to pressurize the system will both be suddenly released.NOTE 2: To illustrate the violent hazard of failure, assume a 5 HP compressor is used to raise the test section to test pressure and that it takes 1 h to achieve test pressure. If sudden rupture occurs, energy release may occur in 2 s. Therefore, the horsepower of the energy release would be 5 HP × 1 h × 3600 s/h / 2 s = 9000 HP. Further, if diameter is doubled, energy release is four times greater. For an example test section that is twice the diameter, energy release would be 36 000 HP.1.10 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Numbered notes and information in parentheses in the text of the practice are non-mandatory information. Table notes are mandatory information.1.11 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.12 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

1.1 This specification covers requirements and test methods for 6 in. (150 mm) through 60 in. (1500 mm) fabricated or molded solid wall poly(vinyl chloride) (PVC) gasketed sanitary sewer fittings to be used with piping manufactured to Specifications F2763, F2764, or F2947. Fabricated fittings may be manufactured from pipe, or from a combination of pipe and injection molded parts with PVC base stock.1.2 The requirements of this specification are to provide fabricated or molded solid wall PVC gasketed fittings for nonpressure drainage of sewage.1.3 Fittings produced to this specification are intended to be installed with pipe, in accordance with Practice D2321.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

5.1 The purpose of this practice is to outline a procedure for using GWT to locate areas in metal pipes in which wall loss has occurred due to corrosion or erosion.5.2 GWT does not provide a direct measurement of wall thickness, but is sensitive to a combination of the CSC (or reflection coefficient) and circumferential extent and axial extent of any metal loss. Based on this information, a classification of the severity can be assigned.5.3 The GWT method provides a screening tool to quickly identify any discontinuity along the pipe. Where a possible defect is found, a follow-up inspection of suspected areas with ultrasonic testing or other NDT methods is normally required to obtain detailed thickness information, nature, and extent of damage.5.4 GWT also provides some information on the axial length of a discontinuity, provided that the axial length is longer than roughly a quarter of the wavelength.5.5 The identification and severity assessment of any possible defects is qualitative only. An interpretation process to differentiate between relevant and non-relevant signals is necessary.5.6 This practice only covers the application specified in the scope. The GWT method has the capability and can be used for applications where the pipe is insulated, buried, in road crossings, and where access is limited.5.7 GWT shall be performed by qualified and certified personnel, as specified in the contract or purchase order. Qualifications shall include training specific to the use of the equipment employed, interpretation of the test results, and guided wave technology.5.8 A documented program which includes training, examination, and experience for the GWT personnel certification shall be maintained by the supplying party.1.1 This practice provides a guide for the use of waves generated using magnetostrictive transduction for guided wave testing (GWT) welded tubulars. Magnetostrictive materials transduce or convert time varying magnetic fields into mechanical energy. As a magnetostrictive material is magnetized, it strains. Conversely, if an external force produces a strain in a magnetostrictive material, the material’s magnetic state will change. This bi-directional coupling between the magnetic and mechanical states of a magnetostrictive material provides a transduction capability that can be used for both actuation and sensing devices.1.2 GWT utilizes ultrasonic guided waves in the 10 to approximately 250 kHz range, sent in the axial direction of the pipe, to non-destructively test pipes for discontinuities or other features by detecting changes in the cross-section or stiffness of the pipe, or both.1.3 GWT is a screening tool. The method does not provide a direct measurement of wall thickness or the exact dimensions of discontinuities. However, an estimate of the severity of the discontinuity can be obtained.1.4 This practice is intended for use with tubular carbon steel products having nominal pipe size (NPS) 2 to 48 corresponding to 60.3 to 1219.2 mm (2.375 to 48 in.) outer diameter, and wall thickness between 3.81 and 25.4 mm (0.15 and 1 in.).1.5 This practice only applies to GWT of basic pipe configuration. This includes pipes that are straight, constructed of a single pipe size and schedules, fully accessible at the test location, jointed by girth welds, supported by simple contact supports and free of internal, or external coatings, or both; the pipe may be insulated or painted.1.6 This practice provides a general practice for performing the examination. The interpretation of the guided wave data obtained is complex and training is required to properly perform data interpretation.1.7 This practice does not establish an acceptance criterion. Specific acceptance criteria shall be specified in the contractual agreement by the cognizant engineer.1.8 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

This practice covers bolt and stud bolt lengths, quantities, and thread series for pipe to pipe and pipe to valve flanged joints. This specification presents tables of bolting lengths for different steel flanged joints.1.1 This practice covers bolt and stud bolt lengths, quantities, and thread series for pipe to pipe and pipe to valve flanged joints (Note 1) in the nominal pipe size ranges of 1/2 in. through 48 in. (12.7 mm through 1219 mm) diameter and pressure range of 125 psi through 2500 psi (0.8 kPa through 17 236 kPa).NOTE 1: This is applicable when flange of valve has the same thickness as mating flange.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

This specification covers wrought carbon steel and alloy steel pipe fittings of seamless and welded construction for use in pressure piping and pressure vessel service at low temperatures. Materials shall consist of forgings, bars, plates, seamless or fusion welded tubular products with filler metal added, and shall be produced by open-hearth, basic-oxygen, or electric-furnace process. Forging or forming operations shall be performed by one or a combination of two or more of the following procedures: hammering, pressing, piercing, extruding, upsetting, working, bending, fusion-welding, or machining. All welding shall be completed prior to the austenitizing heat treatment, which shall be executed in the normalized, normalized and tempered, annealed, or quenched and tempered conditions. Steel specimens shall conform to required values of chemical composition, tensile strength, yield strength, elongation, wall thickness, and Charpy V-notch impact value. All fusion-welded butt joints shall undergo radiographic examination, while hydrostatic testing of fittings is not required in this specification. Repair welding shall be permissible for parts made to dimensional standards.1.1 This specification2 covers wrought carbon steel and alloy steel fittings of seamless and welded construction, covered by the latest revision of ASME B16.9, ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, and MSS SP-97. Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M. These fittings are for use in pressure piping and pressure vessel service at low temperatures.1.2 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. When desired, one or more of these supplementary requirements shall be specified in the order.1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

5.1 Periodic testing of spill prevention equipment and containment sumps used for interstitial monitoring of piping is required by US EPA regulation § 40 CFR §280.35.5.2 The spill prevention equipment and containment sumps used for interstitial monitoring of piping must be tested at least once every three years to ensure the equipment is liquid tight by using vacuum, pressure, or liquid testing according to § 40 CFR §280.35. Under this practice, an annual test is required.5.3 The phrase liquid tight is an ambiguous expression with the acceptable leak rate dependent upon the nature of the liquid and the purpose of the evaluated material. This practice defines liquid tight.5.3.1 There is no minimum containment capacity or leak rate criteria for spill prevention equipment or containment sumps used for interstitial monitoring of piping.5.4 Spill prevention equipment and containment sumps are designed to contain a regulated substance that is released from the primary fuel path of a UST system including leaks that occur when the delivery hose is disconnected from the fill pipe, until the regulated substance is detected and removed. There is no established maximum leak rate, capacity requirement or holding time.5.5 Spill prevention equipment and containment sumps must be properly installed pursuant to § 40 CFR §280.20 in accordance with a code of practice developed by a nationally recognized association or independent testing laboratory and in accordance with the manufacturer's instructions. Properly installed spill prevention equipment and containment sumps will perform as designed unless one or more components have become compromised. Indications of component compromise that could impact the capability of a sump to remain liquid tight are visually observable.5.6 This practice is used to perform a liquid test of sumps to determine if the sumps are liquid tight, capable of containing a regulated substance leaked from the primary fuel path of the UST system until the regulated substance is detected and removed.5.7 Liquid testing by visual examination is the process of using the naked eye, alone or in conjunction with various aids such as portable lighting, camera, or mirrors, as the sensing mechanism from which a determination is made about the condition of the sump being inspected.5.8 This practice is only applicable to spill prevention equipment and containment sumps after installation testing is complete. Properly installed spill prevention equipment and containment sumps will remain liquid tight unless one or more components become compromised.5.9 The periodic operation and maintenance walkthrough inspections required by §40 CFR §280.36 will not comply with this practice unless conducted by a professional inspector and all requirements of Section 7 are addressed.5.10 This practice is not applicable where components are not observable.5.11 This practice does not supersede requirements developed by the manufacturer of items tested, if any requirements exist.1.1 Spill prevention equipment, and containment sumps are tested periodically to ensure the equipment is liquid tight by using vacuum, pressure, or liquid testing pursuant to United States of America federal regulations found in § 40 CFR 280.35.1.2 This practice provides a liquid test by visual examination conducted by a professional inspector to determine if the spill prevention equipment and containment sumps are liquid tight.1.3 The user is expected to have knowledge of UST installation procedures and UST operational, maintenance and testing requirements of § 40 CFR 280 et seq, related to the tasks performed.1.4 Section 6 provides the minimum qualifications and educational requirements of a professional inspector. The authority having jurisdiction may have additional certification requirements.1.5 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title means only that the document has been approved through the ASTM consensus process.1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Hazards known to this practice are identified in Section 8.1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

This specification establishes the material, manufacturing, performance, and testing requirements for Metallic Press-Connect Fittings used in piping and tubing systems with a maximum allowable working pressure of 300 psi. Metallic Press-Connect Fittings are directly attached to pipe or tube by mechanical deformation of the pipe or tube or fitting, or a combination thereof, creating a seal and a restrained joint. The seal may be created via the mechanical deformation (of the pipe, tube or fitting) or created independently. Press-Connect fittings shall be made from one or more of the following material grades: Grade A (carbon steel), Grade B (stainless steel), Grade C (copper and copper-alloy), Grade D (copper-nickel), and Grade E (brass). The fittings rated pressure shall be one of the following classes: Class 1 (100 psi [0.69 MPa] maximum), Class 2 (200 psi [1.38 MPa] maximum), and Class 3 (300 psi [2.07 MPa] maximum). The elastomeric seals are of three types: Type 1 (ethylene propylene diene monomer [EPDM]), Type 2 (hydrogenated nitrile butadiene rubber [HNBR], and Type 3 (fluoro-elastomer or synthetic fluorinated rubber [FKM]).This specification also covers ordering information, dimensions, and workmanship, finish, and appearance, as well as sampling for testing, tests and re-tests, specimen preparation, inspection, certification, and product marking.1.1 This specification establishes the performance characteristics required for Metallic Press-Connect Fittings for use in piping and tubing systems with a maximum allowable working pressure of three-hundred pounds per square inch (300 psi) [2.07 MPa]. These fittings directly attach to pipe or tube by mechanical deformation of the pipe or tube or fitting, or a combination thereof, creating a seal and a restrained joint. The seal may be created via the mechanical deformation (of the pipe, tube or fitting) or created independently. Successful completion of the tests described herein constitutes completion of the technical portion of the qualification process.1.2 The tests specified are applicable only to ascertain the performance characteristics. These tests are not intended for use in the evaluation of non-Press-Connect Fittings.1.3 Refer to IACS UR P2.7.4, Table-7 for Metallic Press-Connect Fittings applications.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

This specification covers cured-in-place thermosetting resin pipe (CIPP) with a certain measurement, equivalent diameter, for use in gravity flow systems in conveying sanitary sewage, storm water, and certain industrial wastes. This specification is suited for the evaluation and testing of materials used in the rehabilitation of existing pipes by the installation and cure of a resin-impregnated fabric liner. CIPP are classified into three types: Type I which is designed to provide chemical resistance and prevent exfiltration; Type II which is installed in a partially deteriorated existing pipe or structure and is designed to provide chemical resistance, prevent exfiltration and infiltration, and support the external hydrostatic loads due to groundwater only (and internal vacuum, where applicable), since the soil and live loads can be supported by the original conduit or structure; and Type III which is Installed in a fully deteriorated existing pipe or structure and designed to provide chemical resistance, prevent exfiltration and infiltration, and support all external hydraulic, soil, and live loads acting on the original conduit or structure. CIPP also are classified into three grades: Grade 1 as thermosetting polyester resin, Grade 2 as thermosetting polyester resin, and Grade 3 as thermosetting epoxy resin. Properties of CIPP materials such as diameter, wall thickness, chemical resistance, flexural strength, and tensile strength shall be determined by subjecting them to different tests.1.1 This specification covers cured-in-place thermosetting resin pipe (CIPP), 4 through 132-in. (100 through 3353-mm) equivalent diameter, for use in gravity flow systems for conveying sanitary sewage, storm water, and certain industrial wastes. This specification is suited for the evaluation and testing of materials used in the rehabilitation of existing pipes by the installation and cure of a resin-impregnated fabric liner.1.2 This specification can also be extended to cover manholes, pump stations, wetwells, vaults, storage tanks, and other similar structures where a cured in place liner using thermosetting resin is applicable.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.NOTE 1: There are no ISO standards covering the primary subject matter of this specification.1.4 The following safety hazards caveat pertains only to the test methods portion, Section 8, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

1.1 This specification covers requirements for poly(vinyl chloride) (PVC) solvent cements to be used in joining poly(vinyl chloride) piping systems.1.2 These solvent cements are used with poly(vinyl chloride) piping systems made from compounds as defined in Specification D1784.1.3 A two-step procedure for joining PVC pipe and fittings is given in Practice D2855. A one-step procedure for joining PVC pipe and fittings is given in Practice F3328.1.4 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.6 The following safety hazards caveat pertains only to the test methods portion, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车