Home / Standards / GB/T 985.2-2008 GB/T 985.2-2008 Active Recommended joint preparation for submerged arc welding 埋弧焊的推荐坡口 Standard Type GBT ICS 25.160.01 CCS J33 Status 现行 Issue Date 2008-03-31 Implementation 2008-09-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委