Home / Standards / GB/T 985-1988 GB/T 985-1988 Abolished Basic forms and sizes of weld grooves for gas welding,manual arc welding and gas-shielded arc welding 气焊、手工电弧焊及气体保护焊焊缝坡口的基本形式与尺寸 Standard Type GBT ICS 25.160.40 CCS J33 Status 废止 Issue Date 1988-06-25 Implementation 1989-03-01 Responsible Dept 国家标准委 Drafting Unit N/A