... steel tube seamless weled OD:6mm-750mm T:0.3-75mm Finish: POLISH,ACID,HL,200# polishing, 400 # polishing 316L stainless steel tubeStainless steel ... ,317, 317L,321,409L, 904L, 410, 430,4Cr13.Tianjin development zone Ganghua Co.,Ltd which was established in 2006 had developed rapidly .At ...