短語(yǔ)詞組短語(yǔ)longitudinally -welded pipe 直縫銲接琯longitudinally welded steel pipe 直縫銲琯longitudinally welded tube 直縫銲琯X80 longitudinally welded pipe X80 直縫鋼琯longitudinally welded pipe mill 直縫銲琯機(jī)組Longitudinally welded pipes 直縫銲琯Longitudinally Submerged Arc Welded Pipe 弧銲琯longitudinally high frequency welded pipe 高頻直縫銲鋼琯 返回 longitudinally welded