Home / Standards / GB/T 342-2017 GB/T 342-2017 Active Dimension,shape,mass and tolerance of cold-drawn round,square and hexagonal steel wires 冷拉圆钢丝、方钢丝、六角钢丝尺寸、外形、重量及允许偏差 Standard Type GBT ICS 77.140.65 CCS H49 Status 现行 Issue Date 2017-11-01 Implementation 2018-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A