The PQR is done on the steel pipe of ASME SA - 335 P22 and ASME SA - 335 P11 using the GTAW + FCAW processes.

• 采用钨极惰性气体保护焊(GTAW)打底与药芯焊丝气体保护焊(FCAW)填充、盖面的焊接方法对ASME SA-335 P22和ASME SA-335 P11钢管做了焊接工艺评定。