Home / Standards / GB/T 33817-2017 GB/T 33817-2017 Active Method for determination of the carbon content on the inner surface of copper and copper-alloy tube 铜及铜合金管材内表面碳含量的测定方法 Standard Type GBT ICS 77.120.99 CCS H13 Status 现行 Issue Date 2017-05-31 Implementation 2017-12-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A