ISO 6971:2002规定了适用于输送散装材料的焊接结构曲柄连杆拖链及其相关附件和链轮的特性。ISO 6971:2002中规定的链条尺寸确保了完整链条和单个链环在维修时的互换性。 ISO 6971:2002适用于5到20齿之间的链轮。 还提供了与符合ISO 6971:2002的传送链一起使用的五种附件的规格。

ISO 6971:2002 specifies the characteristics of cranked-link drag chains of welded construction suitable for conveying bulk materials, together with associated attachments and chain sprockets. The chain dimensions specified in ISO 6971:2002 ensure interchangeability of both complete chains and individual links for repair purposes. ISO 6971:2002 is applicable to sprockets with between 5 and 20 teeth. Specifications are also given for five types of attachment for use with the conveyor chains conforming to ISO 6971:2002.