STANDARD WELDING PROCEDURE SPECIFICATION (WPS) FOR GAS TUNGSTEN ARC WELDING OF CARBON STEEL, (M-1/P-1, GROUP 1 OR 2), 3/16 THROUGH 7/8 INCH, IN THE AS-WELDED CONDITION, WITH OR WITHOUT BACKING
3/16至7/8英寸碳钢(M-1/P-1 第1组或第2组)焊态钨极气体保护焊标准焊接工艺规范(WPS) 带或不带衬垫