Home / Standards / GB/T 2972-2016 GB/T 2972-2016 Active Test method for uniformity of zinc coating on zinc-coated steel wire by the copper sulphate dip 镀锌钢丝锌层硫酸铜试验方法 Standard Type GBT ICS 25.220.40 CCS H25 Status 现行 Issue Date 2016-06-14 Implementation 2017-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A