本文件规定了8级单腿、双腿、三腿和四腿焊接链式吊索的要求、额定值和测试方法，使用的部件包括符合ISO 3076的吊索链以及符合ISO 16798的链环、符合ISO 7597的吊钩和符合ISO 8539的锻造部件。 注1:对于本文件未涵盖的特殊起吊目的，还可以使用中间连杆，例如，将具有不同工作负载限制的部件相互连接。 本文件涵盖的公称直径dn范围为4 mm至45 mm。 根据ISO 3056，本文件中的链式吊索适用于-40°C至+400°C的温度范围。 注2:关于8级链式吊索的使用和维护，见ISO 3056。 根据本文件，链式吊索符合ISO 1834的一般验收条件，仅用于对称分布荷载。 注3:不对称分布载荷的链式吊索的额定值，见ISO 3056。 本文件不适用于机械连接的链式吊索。 注4:对于机械连接的链式吊索，参见ISO 7593。 交叉引用:ISO 8539ISO 7597ISO 16798ISO 3076ISO 17440:2014ISO 497ISO 2374ISO 1834ISO 7593ISO 3056购买本文件时提供的所有当前修订版均包含在购买本文件中。

This document specifies the requirements, methods of rating and testing of single, double, three and four leg welded chain slings of grade 8 using components such as sling chains according to ISO 3076 together with links according to ISO 16798, hooks according to ISO 7597 and forged components according to ISO 8539. NOTE 1 For special lifting purposes not covered by this document, additionally intermediate links can be used, for example to connect components to each other having different working load limit. The range of nominal diameter, dn, covered by this document is from 4 mm to 45 mm. Chain slings according to this document are for use in the temperature range -40 °C to +400 °C according to ISO 3056. NOTE 2 Concerning the use and maintenance of chain slings of grade 8, see ISO 3056. Chain slings according to this document comply with the general conditions of acceptance of ISO 1834 and are used for symmetrically distributed loads only. NOTE 3 For rating of chain slings with asymmetrically distributed loads, see ISO 3056. This document does not apply to mechanically joined chain slings. NOTE 4 For mechanically joined chain slings, see ISO 7593.Cross References:ISO 8539ISO 7597ISO 16798ISO 3076ISO 17440:2014ISO 497ISO 2374ISO 1834ISO 7593ISO 3056All current amendments available at time of purchase are included with the purchase of this document.