Home / Standards / GB/T 33209-2016 GB/T 33209-2016 Active Welding procedure qualification for welded gas cylinders 焊接气瓶焊接工艺评定 Standard Type GBT ICS 23.020.30 CCS J74 Status 现行 Issue Date 2016-12-13 Implementation 2017-07-01 Responsible Dept 国家标准委 Drafting Unit N/A