螺旋缝埋弧焊钢管
helical seam submerged-arc welding steel pipe
SAWH pipe
螺旋埋弧焊管
SAW spiral weld pipe
spiral submerged arc welded pipe
Spiral SAW pipe
SAW spiral welded pipe
Submerged arc weld spiral pipe
spiral welded pipe
Submerged- arc Weld Spiral Pipe
spiral submerged welded pipe
SSAW pipe
SAWH pipe
SAWH
小管径螺旋埋弧焊管
Small-sized spiral submerged-arc welded pipe
螺旋缝焊管
spirally welled steel pipe
SAWH pipe
螺旋埋弧焊
spiral submerged arc welded pipe
submerged arc welding
SSAW
SAWH
螺旋埋弧焊钢管
spiral submerged welded pipe
SSAW pipe
spiral submerged arc welded pipe
spirally steel pipe
双面埋弧螺旋焊接
double submerged arc helix welding
X80钢级直缝埋弧焊管
X80 steel SAW straight welded tube