Home / Standards / GB/T 5231-2001 GB/T 5231-2001 Abolished Wrought copper and copper alloys chemical composition limits and forms of wrought products 加工铜及铜合金化学成分和产品形状 Standard Type GBT ICS 77.150.30 CCS H62 Status 废止 Issue Date 2001-07-10 Implementation 2001-12-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A