Gas and Water tube OD:1/4" ~ 24" 16 ~ 610 mm Steel Grade:ASTM A106A/A106B/A Features:1ProductGas and water tube2Type Hot rolled ,cold drawn or precision cold rolled steel tubes are avalible here 3Applicationuse for oil well, boilers, precision machines, petro-chemical, ship, structure pipe, automobile,shock absorber,building, geology, fluid tubes, line pipe etc4Mill Certificate Mill Test ...