Home / Standards / GB/T 552-1996 GB/T 552-1996 Abolished Anchor chain casting steel 铸造锚链钢 Standard Type GBT ICS 47.020.05 CCS U05 Status 废止 Issue Date 1996-01-25 Implementation 1996-10-01 Responsible Dept 国家标准委 Drafting Unit N/A