... ,seamless steel pipes,cold-drawn or cold-rolled precision seamless and welded pipes,phosphated hydraulic pipes, galvanized pipes & tubes ,etc.Process Methodcold drawn and cold ... ,DIN1630,DIN73000,DIN2445,EN10305,JIS G3445,ASTM A106,ASTM A179,ASTM A519,etc.Delievery ConditionNBK(+N), GBK(+A), ... is a professional manufacturer of steel pipe & tubes. If you have inquire of prime class quality steel ...