... and welded pipes,phosphated hydraulic pipes, galvanized pipes & tubes ,etc.Process Methodcold drawn and cold rolledstainless steel pipe ... Pickling,Polished,BA, etc.Applicationpressure vessels, petrochemical industry, boiler,heat exchanger, auto parts, hydraulic system, pharmaceutial machinery, ships, air ... is a professional manufacturer of steel pipe & tubes. If you have inquire of prime class quality ...