... Standard: ASTM,AISI,DIN,JIS,GB stainless steel tube/pipe/fitting1.Standard:GB,JIS,DIN,ASTM A312,ASTMA269,ASTM268 ... - Usage 1. Low and middle pressure fluid transportation pipeline 2. Casing Tube 3. Boiler Pipe 4. Petroleunm and natural gas industry ... ) Chemical and Physical characteristic: durable, corrosion resistant and high-temperature resistant4) We also produce pipes with special specifications ...