AWS B2.1-1-207-96(R2007) 主要用于管道的、在焊接或PWHT条件下(M-1／P-1／S-1,1或2组)1／8到1-1／2英寸厚、ER70S-2碳钢的钨极电弧焊的标.pdfVIP

ANSI/AWS B2.1-1-207-96 (R2007)An American National StandardStandard Welding ProcedureSpecification (SWPS) forGas Tungste...