1.1 本规范涵盖了合金链式吊索的额定值和测试要求和方法。吊索应使用根据规范制造的部件进行组装 A391/A391M 对于80级链条，规格 A973/A973M 适用于100级链条和规格 A952/A952M 对于其他组件。本规范涵盖焊接和机械组装吊索。 1.2 本规范不包括在高温（400以上）下使用的吊索 °F[200 °C]），在有害或腐蚀性环境条件下，或用于非对称支腿或负载等应用。 1.3 本规范为性能和装配规范。其他标准，如OSHA 1910.184、ASME B30.9和ASME B30.10，适用于本规范中产品的使用。 1.4 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一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 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》中确立的国际公认标准化原则制定的。

1.1 This specification covers the requirements and method of rating and testing for alloy chain slings. Slings shall be assembled using components manufactured in accordance with Specification A391/A391M for Grade 80 chain, Specification A973/A973M for Grade 100 chain, and Specification A952/A952M for other components. This specification covers welded and mechanically assembled slings. 1.2 This specification does not cover slings used at elevated temperatures (above 400 °F [200 °C]), in harmful or corrosive environmental conditions or for applications such as nonsymmetrical legs or loading. 1.3 This specification is a performance and assembly specification. Other standards, such as OSHA 1910.184, ASME B30.9, and ASME B30.10, apply to the use of the products in this specification. 1.4 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 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. 1.5 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.