本标准是两个ASME标准ASME B29的合并。16M-1995（焊接钢型磨机链条、附件和链轮齿）和ASME B29。18M-1993（焊接钢制拖链、附件和链轮齿）。这两个标准被合并为一个标准，因为这两种链条的结构和通常的应用相似。焊接钢型磨机链（B29.16M）的开发目的是提供一系列钢链，类似于可拆卸、磨机和组合类型的铸造链。虽然焊接钢型磨链在多年前就被引入林产品行业，但近年来，它们在各种材料搬运和驱动应用中的广泛使用促进了基本类型的标准化。 焊接钢型拖链（B29.18M）的开发旨在提供一系列钢链，类似于偏置和组合类型的铸造拖链。焊接钢制拖链最初是为林产品行业引入的，近年来它们的广泛使用要求基本尺寸的标准化。

This Standard is a consolidation of two ASME standards, ASME B29.16M-1995 (Welded Steel-Type Mill Chains, Attachments, and Sprocket Teeth) and ASME B29.18M-1993 (Welded Steel-Type Drag Chains, Attachments, and Sprocket Teeth). These two standards were combined into one because of the similarity of construction and the usual applications for the two types of chains. The welded-steel-type mill chains (B29.16M) were developed to provide a series of steel chains similar to cast chains of the detachable, mill, and combination types. Although the welded-steel type mill chains were introduced many years ago for the forest products industries, their extended usage in a variety of materials handling and drive applications in recent years stimulated standardization of the basic types. The welded-steel-type drag chains (B29.18M) were developed to provide a series of steel chains similar to cast drag chains in the offset and combination types. Welded steel drag chains were originally introduced for the forest products industries and their expanded usage in recent years called for standardization of basic sizes.