welded steel tube 1,made of stainless tube,bar,sheet 2,202,304,304L,316Letc 3,wide appliance 4,bend,coil,press,polish,cut welded steel tubeMain Grades ... ,Fluid Conveyance,Mechanical Structure,Heat ExchangerStandard:ASTM A269/249/312 welded steel tube picture: welded steel tube