1.1 本规范涵盖一组通用要求，适用于以下任何单个产品规范下的钢制法兰、锻造配件、阀门和管道应用零件: 质量标准标题 ASTM名称 管道部件用碳钢锻件 A105/A105M 通用管道用碳钢锻件 A181/A181M 锻造或轧制合金钢管法兰 A182/A182M 高温用配件、阀门和零件 服务 需要缺口的碳素钢和低合金钢锻件 A350/A350M 管道部件的韧性测试 锻造或轧制8%和9%镍合金 A522/A522M 钢制法兰、配件、阀门和零件 用于低温服务 管道法兰用碳钢和合金钢锻件， A694/A694M 用于高-压力 传输服务 低碳钢和合金钢锻造法兰 A707/A707M 温度服务 管道部件用碳钢锻件 A727/A727M 固有缺口韧性 钛稳定化碳钢锻件，用于 A836/A836M 搪玻璃管道和压力容器服务 1.2 如果单个产品规范的要求与本通用要求规范的要求发生冲突，则以单个产品规范的要求为准。 1.3 通过买方和供应商之间的相互协议，可以规定额外的要求（见第节 4.1.2 ).任何此类附加要求的接受应取决于与供应商的协商，并且必须包含在买方和供应商之间商定的订单中。1.4 以SI单位或英寸-磅单位表示的值应单独视为标准值。在正文和表格中，国际单位制单位显示在括号中。每个系统中陈述的值可能不完全等同；因此，每个系统应独立使用。合并两个系统的值可能导致不符合标准。除非订单中指定了产品规格的“M”名称（SI），否则应适用英寸-磅单位。 1.5 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》中确立的国际公认的标准化原则制定的。

1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications: Title of Specification ASTM Designation Forgings, Carbon Steel, for Piping Components A105/A105M Forgings, Carbon Steel, for General-Purpose Piping A181/A181M Forged or Rolled Alloy-Steel Pipe Flanges, Forged A182/A182M Fittings, and Valves and Parts for High Temperature Service Forgings, Carbon and Low Alloy Steel, Requiring Notch A350/A350M Toughness Testing for Piping Components Forged or Rolled 8 and 9 % Nickel Alloy A522/A522M Steel Flanges, Fittings, Valves, and Parts for Low-Temperature Service Forgings, Carbon and Alloy Steel, for Pipe Flanges, A694/A694M Fittings, Valves, and Parts for High-Pressure Transmission Service Flanges, Forged, Carbon and Alloy Steel for Low A707/A707M Temperature Service Forgings, Carbon Steel, for Piping Components with A727/A727M Inherent Notch Toughness Forgings, Titanium-Stabilized Carbon Steel, for A836/A836M Glass-Lined Piping and Pressure Vessel Service 1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general requirement specification, the requirements of the individual product specification shall prevail over those of this specification. 1.3 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (see Section 4.1.2 ). The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order as agreed upon between the purchaser and supplier. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text and the tables, the SI units are shown in brackets. 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. The inch-pound units shall apply, unless the “M” designation (SI) of the product specification is specified in the order. 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.