定价： 515元 加购物车

This specification covers reinforced concrete culvert, storm drain, and sewer pipe. The pipe manufactured with this specification shall be of five classes: Class I, Class II, Class III, Class IV, and Class V. The strength requirements for each class are specified. The reinforced concrete shall consists of: cementitious materials, mineral aggregates, and water. Cementitious materials are the following: cement, ground granulated blast-furnace slag, fly ash, and allowable combinations of cementitious materials. Other materials include: admixtures and blends, steel reinforcement, and synthetic fibers. Design tables and modified of special designs are given. Reinforcements are the following: circumferential reinforcement, longitudinal reinforcement, and joint reinforcement for rubber and non-rubber gasket joints. The physical properties shall conform to the required test for external load crushing strength. The following concrete tests shall be done: compression testing of cylinders, compression testing of cores, absorption test, and equipment test.1.1 This specification covers reinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, and storm water, and for the construction of culverts.1.2 This specification is the SI companion to Specification C76; therefore, no inch-pound equivalents are presented in this specification. Reinforced concrete pipe that conform to the requirements of C76 are acceptable under this Specification C76M unless prohibited by the Owner.NOTE 1: This specification is a manufacturing and purchase specification only, and does not include requirements for bedding, backfill, or the relationship between field load condition and the strength classification of pipe. However, experience has shown that the successful performance of this product depends upon the proper selection of the class of pipe, type of bedding and backfill, controlled manufacture in the plant, and care and installation conforms to the construction specifications. The owner of the reinforced concrete pipe specified herein is cautioned that he must correlate the field requirements with the class of pipe specified and provide inspection at the construction site.NOTE 2: Attention is called to the specification for reinforced concrete D-load culvert, storm drain, and sewer pipe (ASTM Designation C655M).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： 646元 加购物车

3.1 This practice is provided in the interest of facilitating the transition of dimensional practice for standard refractory brick and shapes from inch-pound units to metric (SI) units.3.2 The standard dimensions are based on a 38-mm module (taken as the equivalent to 1.5 in.) and are developed with the aim of preserving a modular relationship between the dimensions of the principal rectangular refractory shapes.1.1 This practice covers dimensions in millimetres for standard series refractory brick and shapes of all compositions.1.2 A standard method for converting all other dimensions of shaped refractory articles from inch-pound to SI units is included.1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.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： 515元 加购物车

3.1 This practice is provided to facilitate comparison of physical and mechanical properties of refractory materials by establishing uniform presentation of data.3.2 Units have been chosen, where possible, to result in numbers of magnitude familiar in the refractories industry, that is, g/cm3 rather than the SI preferred unit kg/m3. It is recommended that SI prefixes be selected for use with the units such that the resulting numerical values lie between 0.1 and 1000. For most properties, the prefixes kilo (k) and mega (M) are preferred. Other prefixes are given in the following table:MultiplicationFactor  Prefix  Symbol109 giga G106 mega M103 kilo k102 hectoA h101 dekaA da10−1 deciA d10−2 centiA c10−3 milli m10−6 micro μ10−9 nano n(A) To be avoided where practical.3.3 The conversion factors, which have been selected for their general utility in the refractories industry, have been taken from Practice E380, where possible. For uniformity, they have been presented to four decimal places. In use, the converted values should be rounded to the same number of significant figures as in the original value.1.1 This practice presents the units to be employed for reporting the properties of refractories, such as density, crushing stress, modulus of rupture, tensile stress, thermal conductivity, and permeability.1.2 For convenience, a table of conversion factors between inch-pound units and SI units is included.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 加购物车

定价： 345元 / 折扣价： 294 元 加购物车

定价： 156元 / 折扣价： 133 元 加购物车

定价： 156元 / 折扣价： 133 元 加购物车

定价： 156元 / 折扣价： 133 元 加购物车

This specification covers nonreinforced concrete sewer, storm drain, and culvert pipe. The pipe manufactured according to this specification shall be of three classes: Class 1, Class 2, and Class 3. The strength requirements for nonreinforced concrete pipe are specified. The concrete shall consist of cementitious material, mineral aggregates, and water. Cementitious materials are the following: cement, fly ash, ground granulated blast furnace slag, and allowable combinations of cementitious materials. The design of the pipe may be according to design tables or modified or special design. The following are the processes for pipe manufacturing: mixture; curing such as pipe curing, water curing, and membrane curing; and specials like shapes or fittings and fabricated branches. The following tests shall be made: strength test, absorption test, permeability test, and hydrostatic test.1.1 This specification covers nonreinforced concrete pipe intended to be used for the conveyance of sewage, industrial wastes, storm water, and for the construction of culverts.1.2 This specification is the metric counterpart of Specification C14.1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.NOTE 1: This specification is a manufacturing and purchase specification only and does not include requirements for bedding, backfill, or the relationship between field load condition and the strength classification of pipe. However, experience has shown that the successful performance of this product depends upon the proper selection of the class of pipe, type of bedding and backfill, and care that the installation conforms to the construction specifications. The owner is cautioned that he must correlate the field requirements with the class of pipe specified and provide for or require inspection at the construction site.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： 590元 加购物车

This specification covers reinforced concrete pipe with rubber gasket joints to be used for the conveyance of irrigation water with working pressures, including hydraulic transients. The acceptability of the pipe, joint design, and gaskets shall be determined by the results of the tests prescribed in this specification, if and when required, and by inspection to determine whether the pipe and gaskets conform to the specification as to design and freedom from defects. Pipe manufactured in accordance with this specification shall consist of concrete, cement, fly ash, ground granulated blast furnace slag, allowable combinations of cementitious materials, a combination of Portland cement, admixtures and blends, and aggregates. The rubber compound used in the manufacture of the gasket shall be compounded from natural rubber, synthetic rubber, or a mixture of the two fabricated as prescribed in the specification. The rubber from which the gaskets are fabricated shall have the following physical properties: ultimate elongation at break; ultimate elongation at break after aging; hardness; compression set; water absorption; and ozone resistance. If a splice is used in the manufacture of the gasket, the strength shall be such that the gasket shall withstand elongation over the part of the gasket that includes the splice with no visible separation of the splice. Test specimens shall have the following test requirements: number and type of tests; external load test requirement; and hydrostatic test requirement. Rubber gasket compound tests shall include the following: tensile strength; elongation; aging; hardness; compression set; water absorption; and ozone resistance.1.1 This specification covers nonreinforced concrete pipe with rubber gasket joints to be used for the conveyance of irrigation water with working pressures, including hydraulic transients, as shown in Table 1.1.2 This specification is the SI counterpart of Specification C505.NOTE 1: This specification is for manufacturing and purchase only and does not include requirements for bedding, backfill, installation, or field repairs. The owner is cautioned that he must correlate field conditions with the characteristics of the pipe specified and provide inspection during installation.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： 590元 加购物车

定价： 646元 加购物车

This specification details the physical and performance requirements, and the corresponding test methods, for the evaluation of crosslinked polyethylene (PEX) pipes that are outside diameter controlled, made in nominal pipe dimension ratios, and pressure rated for water at different temperatures. Crosslinked PEX pipes covered here shall be made from polyethylene compounds that have been crosslinked by peroxides, Azo compounds, or silane compounds in extrusion, or by electron beam after extrusion, and are primarily defined by means of three criteria, namely, nominal density, degree of crosslinking, and long-term strength tests. Sampled pipe specimens shall be tested for conformance with workmanship, dimension (out-of-roundness, outside diameter, and wall thickness), density, hydrostatic burst pressure, hydrostatic sustained pressure strength, excessive temperature-pressure capacity, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic sustained pressure strength, oxidative stability in potable chlorinated water, and degree of crosslinking requirements.1.1 This specification covers crosslinked polyethylene (PEX) pipe that is outside diameter controlled in metric pipe sizes of DN 16 to DN 1000 (approximate outside diameters of 16 mm to 1005 mm) and inch pipe sizes NPS 3 to NPS 54 (approximate outside diameters of 3.5 in. to 54 in.), made in nominal pipe dimension ratios, and pressure rated for water at three temperatures (see Appendix X1). Included are requirements and test methods for material, workmanship, dimensions, burst pressure, hydrostatic sustained pressure, excessive temperature-pressure, environmental stress cracking, stabilizer functionality, bent-pipe hydrostatic pressure, oxidative stability in potable chlorinated water, degree of crosslinking, and minimum operating temperature. Requirements for pipe markings are also specified. The pipe covered by this specification is intended for pressure applications, such as, industrial and general-purpose pipelines, potable water pipelines, and fire–extinguishing pipelines1.2 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.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.1.4 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： 646元 加购物车

定价： 843元 加购物车

定价： 590元 加购物车

定价： 646元 加购物车