In this way, the control of puddle, the stiffness of arc and edge puddle are improved.This combination type welding technology is the better way of thick wall thickness pipe welding.

• 结果证明，这一组合式焊接工艺减少了焊缝体积，缩短了焊接时间，焊接质量优于冷丝焊，效率明显提高。