【化】 welded pipe; welded tube

焊縫的英語翻譯：

welding line
【化】 bead; weld joint; weld(ing) seam; welded joint; welding bead

管的英語翻譯：

canal; duct; fistula; guarantee; meatus; pipe; tube; wind instrument
【化】 pipe; tube
【醫(yī)】 canal; canales; canalis; channel; duct; ductus; salpingo-; salpinx
syringo-; tuba; tube; tubi; tubing; tubo-; tubus; vas; vaso-; vessel