定价： 605元 / 折扣价： 515 元

定价： 481元 / 折扣价： 409 元 加购物车

定价： 1333元 / 折扣价： 1134 元 加购物车

定价： 689元 / 折扣价： 586 元 加购物车

定价： 156元 / 折扣价： 133 元 加购物车

定价： 0元 / 折扣价： 0 元 加购物车

This specification covers the thread configuration and dimensions for finishes for plastic bottles with screw-type closures. The bottle overflow and body dimensional tolerances are detailed. The test apparatus for determining bottle capacity consists of a balance, pipet, graduated cylinder, beaker, conditioned water, and stop watch. In addition, the test apparatus for determining finish and body dimensions includes micrometers, Vernier height gages or Vernier calipers, internal micrometers or telescoping gages, and commercial scale. The test methods discussed are for the determination of bottle capacity, body dimensions, and finish dimensions.1.1 This specification covers the thread configuration and dimensions for finishes for plastic bottles with screw-type closures, having a maximum capacity of 18.9 L (5 gal) and a maximum bottle dimension of 305 mm (12 in.). Included are tolerances for bottle capacity and body dimensions.1.2 Units—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.1.3 The following precautionary 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.NOTE 1: There is no known ISO equivalent to this standard.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

5.1 This test method provides statistical and graphical information concerning floor surface profiles.5.2 Results of this test method are for the purpose of: 5.2.1 Establishing compliance of random or fixed-path trafficked floor surfaces with specified tolerances,5.2.2 Evaluating the effect of different construction methods on the waviness of the resulting floor surface,5.2.3 Investigating the curling and deflection of concrete floor surfaces,5.2.4 Establishing, evaluating, and investigating the profile characteristics of other surfaces, and5.2.5 Establishing, evaluating, and investigating the levelness characteristics of surfaces.5.3 Application: 5.3.1 Random Traffic—When the traffic patterns across a floor are not fixed, two sets of survey lines, approximately equally spaced and at right angles to each other, shall be used. The survey lines shall be spaced across the test section to produce lines of approximately equal total length, both parallel to and perpendicular to the longest test section boundary. Limits are specified in 7.2.2 and 7.3.2.5.3.2 Defined Wheel Path Traffic—For surfaces primarily intended for defined wheel path traffic, only two wheel paths and the initial transverse elevation difference (“side-to-side”) between wheels shall be surveyed.5.3.3 Time of Measurement—For new concrete floor construction, the elevation measurements shall be made within 72 h of final concrete finishing. For existing structures, measurements shall be taken as appropriate.5.3.4 Elevation Conformance—Use is restricted to shored, suspended surfaces.5.3.5 RMS Levelness—Use is unrestricted, except that it is excluded from use with cambered surfaces and unshored, elevated surfaces.1.1 This test method covers data collection and analysis procedures to determine surface flatness and levelness by calculating waviness indices for survey lines and surfaces, elevation differences of defined wheel paths, and levelness indices using the inch-pound system of units.NOTE 1: This test method is the companion to SI Test Method E1486M; therefore, no SI equivalents are shown in this test method.NOTE 2: This test method was not developed for, and does not apply to, clay or concrete paver units.1.1.1 The purpose of this test method is to provide the user with floor tolerance estimates as follows:1.1.1.1 Local survey line waviness and overall surface waviness indices for floors based on deviations from the midpoints of imaginary chords as they are moved along a floor elevation profile survey line. End points of the chords are always in contact with the surface. The imaginary chords cut through any points in the concrete surface higher than the chords.1.1.1.2 Defined wheel path criteria based on transverse and longitudinal elevation differences, change in elevation difference, and root mean square (RMS) elevation difference.1.1.1.3 Levelness criteria for surfaces characterized by either of the following methods: the conformance of elevation data to the test section elevation data mean or the conformance of the RMS slope of each survey line to a specified slope for each survey line.1.1.2 The averages used throughout these calculations are RMS (that is, the quadratic means). This test method gives equal importance to humps and dips, measured up (+) and down (−), respectively, from the imaginary chords.1.1.3 Appendix X1 is a commentary on this test method. Appendix X2 provides a computer program for waviness index calculations based on this test method.1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this 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

5.1 This test method provides statistical and graphical information concerning floor surface profiles.5.2 Results of this test method are for the purpose of the following: 5.2.1 Establishing compliance of random or fixed-path trafficked floor surfaces with specified tolerances;5.2.2 Evaluating the effect of different construction methods on the waviness of the resulting floor surface;5.2.3 Investigating the curling and deflection of concrete floor surfaces;5.2.4 Establishing, evaluating, and investigating the profile characteristics of other surfaces; and5.2.5 Establishing, evaluating, and investigating the levelness characteristics of surfaces.5.3 Application: 5.3.1 Random Traffic—When the traffic patterns across a floor are not fixed, two sets of survey lines approximately equally spaced and at right angles to each other shall be used. The survey lines shall be spaced across the test section to produce lines of approximately equal total length, both parallel to and perpendicular to the longest test section boundary. Limits are specified in 7.2.2 and 7.3.2.5.3.2 Defined Wheel Path Traffic—For surfaces primarily intended for defined wheel path traffic, only two wheel paths and the initial transverse elevation difference (“side-to-side”) between wheels shall be surveyed.5.3.3 Time of Measurement—For new concrete floor construction, the elevation measurements shall be made within 72 h of final concrete finishing. For existing structures, measurements shall be taken as appropriate.5.3.4 Elevation Conformance—Use is restricted to shored, suspended surfaces.5.3.5 RMS Levelness—Use is unrestricted, except that it is excluded from use with cambered surfaces and unshored, elevated surfaces.1.1 This test method covers data collection and analysis procedures to determine surface flatness and levelness by calculating waviness indices for survey lines and surfaces, elevation differences of defined wheel paths, and levelness indices using SI units.NOTE 1: This test method is the companion to inch-pound Test Method E1486.NOTE 2: This test method was not developed for, and does not apply to clay or concrete paver units.1.1.1 The purpose of this test method is to provide the user with floor tolerance estimates as follows:1.1.1.1 Local survey line waviness and overall surface waviness indices for floors based on deviations from the midpoints of imaginary chords as they are moved along a floor elevation profile survey line. End points of the chords are always in contact with the surface. The imaginary chords cut through any points in the concrete surface higher than the chords.1.1.1.2 Defined wheel path criteria based on transverse and longitudinal elevation differences, change in elevation difference, and root mean square (RMS) elevation difference.1.1.1.3 Levelness criteria for surfaces characterized by either of the following methods: the conformance of elevation data to the test section elevation data mean; or by the conformance of the RMS slope of each survey line to a specified slope for each survey line.1.1.2 The averages used throughout these calculations are the root mean squares, RMS (that is, the quadratic means). This test method gives equal importance to humps and dips, measured up (+) and down (−), respectively, from the imaginary chords.1.1.3 Appendix X1 is a commentary on this test method. Appendix X2 provides a computer program for waviness index calculations based on this test method.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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

Knitted fabrics are known to exhibit inherent variations in properties. This specification lists the tolerances for each property deemed acceptable in the trade.These tolerances can be used to determine if knitted fabrics meet specifications for properties, and provide a guide in case of dispute.Tolerances agreed upon between the purchaser and the seller shall take precedence over those listed in this specification.AbstractThis specification details the test methods and tolerances applicable to the following properties of knitted fabrics: yield; mass (weight); width; length; fabric count; bursting strength; moisture regain; thickness; extractable matter; and fiber composition. These tolerances are applicable to knitted fabrics of all types, such as warp knits, weft knits, flat bed knits, and so forth.1.1 This specification covers test methods and tolerances applicable to the following properties of knitted fabrics: yield, mass (weight), width, length, fabric count, bursting strength, moisture regain, thickness, extractable matter, and fiber composition.1.2 These tolerances are applicable to knitted fabrics of all types, such as warp knits, weft knits, flat bed knits, and so forth.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.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 and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元 / 折扣价： 0 元

In any test method, every direction to measure a property of a material should be accompanied by a measurement tolerance. Likewise, determination and test result tolerances should be specified. This practice provides a method for evaluating the consistency of the test method tolerances specified.This practice should be used both in the development of new test methods and in evaluating old test methods which are being revised.The test result tolerance obtained using this practice is not a substitute for a precision statement based on interlaboratory testing. However, the measurement tolerances selected by means of this practice will be an important part of the test method conditions affecting the precision of the test method.MATHEMATICAL RELATIONSHIPSTop1.1 This practice should be used in the development of any test method in which the determination value is calculated from measurement values by means of an equation. The practice is not applicable to such determination values as those calculated from counts of nonconformities, ratios of successes to failures, gradings, or ratings.1.2 The purpose of this practice is to provide guidance in the specifying of realistic and consistent tolerances for making measurements and for reporting the results of testing.1.3 This practice can be used as a guide for obtaining the minimum test result tolerance that should be specified with a particular set of specified measurement tolerances, the maximum permissible measurement tolerances which should be specified to achieve a specified test result tolerance, and more consistent specified measurement tolerances.1.4 These measurement and test result tolerances are not statistically determined tolerances that are obtained by using the test method but are the tolerances specified in the test method.1.5 In the process of selecting test method tolerances, the task group developing or revising a test method must evaluate not only the consistency of the selected tolerances but also the technical and economical feasibility of the measurement tolerances and the suitability of the test result tolerance for the purposes for which the test method will be used. This practice provides guidance only for establishing the consistency of the test method tolerances.1.6 This practice is presented in the following sections: Number 1Referenced Documents 2TERMINOLOGYDefinitions 3Discussion of Terms 4Expressing Test Method Tolerances 5Tolerance Symbols 6SUMMARY AND USESSummary of Practice 7Uses and Significance 8MATHEMATICAL RELATIONSHIPSPropagation Equations 9Tolerance Terms 10Determination Tolerances 11Consistency Criteria 12APPLICATION OF PRINCIPLESProcedure 13Mass per Unit Area Example 14ANNEXESGeneral Propagation Equation Annex A1Specific Propagation Equations Annex A21.7 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 and health practices and determine the applicability of regulatory limitations prior to use.

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定价： 156元 / 折扣价： 133 元 加购物车

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1.1 These tolerances are applicable to all yarns 59 tex (10.00/1 cotton count) or coarser spun of man-made fiber(s), 4.5 to 30.0 dtex/filament, (4 to 25 denier/filament) and spun on the parallel worsted or modified worsted system. These tolerances do not apply to novelty or fancy yarns spun on the parallel worsted or modified worsted system. Note 1-For tolerances for other spun yarns, see Tolerances D2644, Tolerances D2645, Specification D541, and Specification D681. 1.2 The values stated in SI units are to be regarded as standard; the values in inch-pound units are provided as information only. 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 and health practices and determine the applicability of regulatory limitations prior to use.

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定价： 646元 / 折扣价： 550 元 加购物车