... building, handhold,decoration Model:201,301,304. 1)stainless steel tube(welded) usded for door,window,guard,rainling etc ... 2)Hight polished in both side and accurated size Name stainless steel tubeItemsSquare pipes, round pipes, oval pipes, special shaped ... food industry,upholstery, industry instrument TestSquash test, extended test, water pressure test, crystal rot test, heat treatment, NDT Chemical ...