大直径直缝焊管
Large－ sized straight weld pips
large-diameter butt welded pipe
large diameter longitudinal welded pipe
Large-sized straight welded tube
X80钢级直缝埋弧焊管
X80 steel SAW straight welded tube
钢管直缝埋弧焊
SAW process for straight welded steel pipe
直缝埋弧焊管
LSAW pipe
longitudinal submerged arc welding pipe
LSAW line pipe
straight submerged welded pipe
Plumbing
LSAW
SSAW pipe
longitudinal welded pipes
Longitudinal submerged arc welded pipe
LSAW(longitudinal submerged arc welded)pipe
SAWL pipes
Longitudinal Submerged-arc Welded Pipe
SAW straight weld pipe
SAWL pipe
straight-seam submerged arc welded pipe
直缝埋弧焊管机组
SAW straight welded tube plant
大口径直缝焊管
Large-sized straight weld pipe
butt-welded pipe
large diameter longitudinal welded pipe
大型直缝埋弧焊钢管
large diameter longitudinal seam submerged arc welding(LSAW) pipe
大直径焊管
large diameter welded pipe
Large sized weld tube
大直径焊管生产线
large diameter welded pipe production line
直缝埋弧焊
longitudinal submerged-arc welding
直缝埋弧焊钢管
SAWL steel pipe
SAWL pipe
Longitudinal submerged arc welded pipe
Straight SAW pipe
Longitudinal-seam submerged arc welded steel pipe
LSAW steel pipe
longitudinal submerged arc welding pipe
LSAW pipe
直缝埋弧焊接钢管
LSAW pipe
longitudinal submerged arc welded(LSAW)pipe
螺旋缝埋弧焊管
spiral submerged arc welded pipe
Spiral SAW pipe
SSAW pipe
spiral seam arc weld pipe
SAWH pipe