Home / Standards / GB/T 20492-2019 GB/T 20492-2019 Active Zinc-5% aluminum-mixed mischmetal alloy - coated steel wire and steel wire strand 锌-5%铝-混合稀土合金镀层钢丝、钢绞线 Standard Type GBT ICS 77.140.65 CCS H49 Status 现行 Issue Date 2019-03-25 Implementation 2020-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A