1.1本规范涵盖压力系统中使用的热等静压、粉末冶金、不锈钢管道部件。包括按规定尺寸或尺寸标准制造的法兰、配件、阀门和类似零件，如ASME规范B16.5。 1.2本规范包括几种等级的马氏体、奥氏体、时效硬化和奥氏体-铁素体不锈钢。 1.3当需要额外测试或检查时，提供了补充要求。仅当买方在订单中单独规定时，才适用。 1.4本规范以英寸-磅单位和国际单位制表示。除非订单规定了适用的 “ M ” 然而，材料的规格名称（国际单位制）应以英寸-磅为单位。 1.5以英寸表示的数值- 磅单位或国际单位应单独视为标准。在文本中，国际单位用括号表示。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.6 以下安全危险警告仅适用于本规范第8.1、8.2、9.5-9.7部分和第10节的试验方法: 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和健康实践，并确定监管限制的适用性。

1.1 This specification covers hot isostatically-pressed, powder metallurgy, stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves, and similar parts made to specified dimensions or to dimensional standards, such as in ASME specification B16.5. 1.2 Several grades of martensitic, austenitic, age hardening, and austenitic-ferritic stainless steels are included in this specification. 1.3 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order. 1.4 This specification is expressed in both inch-pound units and in SI units. Unless the order specifies the applicable “ M ” specification designation (SI units), however, the material shall be furnished to inch-pound units. 1.5 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in parentheses. 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 The following safety hazards caveat pertains only to test methods portions 8.1, 8.2, 9.5-9.7, and Section 10 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 and health practices and determine the applicability of regulatory limitations prior to use.