... GB, DIN, JIS, etc This is about Stainless steel pipe /tube Outer Diameter6 mm-630mmWall thickness1 mm-40mmLength6metre we can as ... /TApplication range Widely used in petroleum, Foodstuff, chemical industry, construction, electric power, nuclear energy, biotechnology, machinery, papermaking, shipbuilding, boiler fields ... standard as the customers' requirement 317L Stainless steel rectangular tube