... 活性气体保护电弧焊MAG 钨极脉冲氩弧焊TAW-P 熔化极脉冲氩弧焊MAW-P ...
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They cause all the welding of double tubes, joint boxes and gas-collecting tubes to realize the backing weld of TAW-P. The quality of the double tube waste heat boilers have been improved.
并对喷嘴、规范参数、坡口形式等作了相应改进，使双套管、联箱、集气管的焊接全部实现了钨极氩弧焊打底，从而提高了双套管废热锅炉的质量。
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