Home / Standards / GB/T 1176-1987 GB/T 1176-1987 Abolished Specification for cast copper alloys 铸造铜合金技术条件 Standard Type GBT ICS 77.120.30 CCS J31 Status 废止 Issue Date 1987-07-13 Implementation 1988-07-01 Responsible Dept 国家标准委 Drafting Unit N/A