本标准规定了胎圈用钢丝的术语和定义、分类及代号、尺寸、外形、重量及允许偏差、订货内容、技术要求、试验方法、检验规则、包装、标志和质量证明书。

This standard specifies the terms and definitions, classification and code, dimensions, shape, mass and tolerance, ordering information, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of bead wire. This standard is applicable to tempered round wire used for strengthening the bead of all kinds of tyres (hereinafter referred to as “steel wire”).