ASTM F2785-20e1 聚酰胺12气体压力管 管道和管件的标准规范.pdf

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 Remendations issued by the World Trade Organization Technical Barriers to Trade (TBT)Committee. Designation:F2785-201 An American National Standard INTERNATIONAL Standard Specification for Polyamide 12 Gas Pressure Pipe Tubing and Fittings This standard is issued under the fixed designation F2785;the number immediately following the designation indicates the year of original adoption or in the case of revision the year of last revision.A number in parentheses indicates the year of last reapproval.A superseript epsilon (g)indicates an editorial change since the last revision or reapproval. E'NOTE-Table 4 was editorially corrected in April 2021. 1.Scope* 1.5 This international standard was developed in accor- 1.1 This specification covers requirements and test methods dance with internationally recognized principles on standard- for the characterization of polyamide 12 pipe tubing and ization established in the Decision on Principles for the fittings for use in fuel gas mains and services for direct burial Development of International Standards Guides and Re- and reliner applications.The pipe and fittings covered by this mendations issued by the World Trade Organization Technical specification are intended for use in the distribution of natural Barriers to T...