Home / Standards / GB/T 985.1-2008 GB/T 985.1-2008 Active Recommended joint preparation for gas welding, manual metal arc welding, gas-shield arc welding and beam welding 气焊、焊条电弧焊、气体保护焊和高能束焊的推荐坡口 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