Home / Standards / GB/T 4171-2008 GB/T 4171-2008 Active Atmospheric corrosion resisting structural steel 耐候结构钢 Standard Type GBT ICS 77.140.50 CCS H46 Status 现行 Issue Date 2008-10-10 Implementation 2009-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A