Home / Standards / GB/T 40377-2021 GB/T 40377-2021 Active Corrosion of metals and alloys—Determination of AC corrosion—Protection criteria 金属和合金的腐蚀 交流腐蚀的测定 防护准则 Standard Type GBT ICS 77.060 CCS H25 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会