本规范涵盖了由冷拉或轧制变形钢丝或变形钢丝与非变形钢丝的组合制成的焊接钢筋，用于混凝土加固。注1:混凝土钢筋用焊接钢丝用各种术语描述:焊接钢丝网（WWF）、织物和网。钢筋行业更倾向于使用术语“焊接钢筋”（WWR），因为它更能代表所生产的产品范围。因此，在本规范和相关规范中，术语“焊接钢丝网”已被术语“焊接钢丝加固”取代。本规范适用于以国际单位制（M 221M）或英寸为单位的订单- 磅单位（米221）。国际单位制和英寸磅单位不一定相等。为清晰起见，文本中的括号中显示了英寸-磅单位，但当材料订购至M 221时，它们是适用的值。将两个系统的值结合起来可能会导致不符合标准。

This specification covers welded wire reinforcement made from cold-worked drawn or rolled deformed wire, or a combination of deformed and nondeformed wires, to be used for the reinforcement of concrete.Note 1: welded wire for concrete reinforcement has been described by various terms: welded wire fabric (WWF), fabric, and mesh. The wire reinforcement industry prefers the term "welded wire reinforcement" (WWR) as being more representative of the range of products being manufactured. Therefore, the term "welded wire fabric" has been replaced with the term "welded wire reinforcement" in this specification and in related specifications.This specification is applicable for orders in either SI units (M 221M) or in inch-pound units (M 221). SI units and inch-pound units are not necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity, but they are the applicable values when the material is ordered to M 221. Combining values from the two systems may result in nonconformance with the standard.