1.1 本规范 2. 涵盖一组要求，除第 6.3 部分 14 部分 21 ，和截面 22 ，是下文所述ASTM管道产品规范的强制性要求，除非产品规范规定了不同的要求，在这种情况下，应以产品规范的要求为准。 1.2 小节 6.3 或 21 如果产品规范有产品分析或压扁测试的要求，则为强制性。 1.3 部分 22 如果产品规范有水压试验要求，但未定义试验参数，则为强制性要求。 1.4 部分 14 仅供参考。 1.5 如果产品规范的要求与本通用要求规范的要求之间存在冲突，则只需满足产品规范的要求。 规范标题 ASTM名称 A. 高温用无缝碳钢管 A106/A106M 高压用金属弧焊钢管 输电系统 A381型 常压和低温用无缝碳钢管 温度 A524型 离心铸造高温碳钢管 服务 A660/A660M 大气和大气用电熔焊钢管 较低的温度 A671/A671M 高压用电熔焊钢管 在中等温度下 A672/A672M 碳和合金钢管，电熔焊 高温下的高压服务 A691/A691M 1.6 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，国际单位显示在括号中。每个系统中规定的值不是精确的等价物；因此，每个系统必须相互独立使用。合并两个系统的值可能会导致不符合规范。除非订单中规定了产品规范的“M”名称（SI），否则英寸-磅单位应适用。 注1: 本标准用无量纲指示符NPS（标称管道尺寸）代替了“标称直径”、“尺寸”和“标称尺寸”等传统术语 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification 2 covers a group of requirements which, with the exceptions of Section 6.3 , Section 14 , Section 21 , and Section 22 , are mandatory requirements to the ASTM pipe product specifications noted below unless the product specification specifies different requirements, in which case the requirement of the product specification shall prevail. 1.2 Sections 6.3 or 21 are mandatory if the product specification has a requirement for product analysis or flattening tests. 1.3 Section 22 is mandatory if the product specification has a hydrostatic test requirement without defining the test parameters. 1.4 Section 14 is for information only. 1.5 In case of conflict between a requirement of the product specification and a requirement of this general requirement specification, only the requirement of the product specification need be satisfied. Title of Specification ASTM Designation A Seamless Carbon Steel Pipe for High-Temperature Service A106/A106M Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission Systems A381 Seamless Carbon Steel Pipe for Atmospheric and Lower Temperatures A524 Centrifugally Cast Carbon Steel Pipe for High-Temperature Service A660/A660M Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures A671/A671M Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures A672/A672M Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures A691/A691M 1.6 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the “M” designation (SI) of the product specification is specified in the order. Note 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.” 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. 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.