短語詞組短語spiris welded steel pipe 螺旋焊接鋼管Seam welded clad pipe 縫焊包覆管butt welded drill pipe 對焊鉆桿iral welded steel pipe 螺旋焊接鋼管Welded Conveying Pipe 焊接輸送管straight welded steel pipe 直縫管;直縫焊鋼管welded oil pipe 焊接油管longitudinally welded steel pipe 直縫焊管Welded Line Pipe 中國的焊管 返回 welded pipe