1.1 本规范涵盖焊接碳钢机器链和线圈链。虽然这些链条不适用于袋轮，但也可用于袋轮和链轮。该链条不得用于高架提升应用。 1.2 机器链和线圈链各有两类: 1.2.1 MS级- 机器，直链钢链， 1.2.2 MT类- 机器，扭链钢链， 1.2.3 CS类- 线圈、直链和 1.2.4 CT类- 线圈，扭链钢链。 1.3 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. 4. 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 welded carbon steel machine chain and coil chain. Although these chains are not intended for pocket wheel use, they can be used for pocket and sprocket wheel use. This chain shall never be used for overhead lifting applications. 1.2 There are two classes each of machine and coil chain: 1.2.1 Class MS— Machine, straight-link steel chain, 1.2.2 Class MT— Machine, twist-link steel chain, 1.2.3 Class CS— Coil, straight-link chain, and 1.2.4 Class CT— Coil, twist-link steel chain. 1.3 The values stated in either inch-pound units or SI units shall 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. 1.4 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.