本国际标准规定了T级（T、DAT和DT型）精密公差起重链的要求 用于手动或电动链式起重机1）。 适用于电焊、圆形、钢制短链，热处理和测试符合 ISO 1834的一般验收条件，标称链条尺寸范围为3 mm至22 mm。 注:T型链条，但不是DAT或DT型，可用于链式起重机以外的起重设备。等级链 专门用于手动起重机的VH将成为未来国际标准的主题。

This International Standard specifies requirements for fine-tolerance hoist chain of Grade T (types T, DAT and DT) for use with manually operated or power-driven chain hoists1). It is applicable to electrically welded, round, steel short-link chain, heat-treated and tested in accordance with the general conditions of acceptance of ISO 1834, in the nominal chain size range from 3 mm to 22 mm. NOTE Type T chain, but not type DAT or DT, may be used in lifting equipment other than chain hoists. Chain of grades TH and VH, intended specifically for use in hand-operated hoists, will be the subject of future International Standards.