Home / Standards / GB/T 340-1976 GB/T 340-1976 Abolished Non-ferrous metals and its alloys--Code of designation 有色金属及合金产品牌号表示方法 Standard Type GBT ICS 77.120 CCS H60 Status 废止 Issue Date 1976-09-08 Implementation 1977-07-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A