... OD:6mm-750mm T:0.3-75mm Finish: POLISH,ACID,HL,200# polishing, 400 # polished 304 seamless tubeStainless steel is a production ... rolledSurface treatmentCopper coatedGalvanizedothersortingStructural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and ...