1)stainless steel pipe(welded) usded for door,window,guard,rainling etc. 2) ... and accurated size From the nature, To the excellenceName stainless steel tubeItemsSquare pipes, round pipes, oval pipes, special shaped pipes, empaistic ... , food industry, upholstery, industry instrument TestSquash test, extended test, water pressure test, crystal rot test, heat treatment, NDT Chemical Composition of ...