Application: For seamless crabon steel boiler and superheater tubes for high-pressure service. Available Steel Grade: A192. Size: OD 1/ 2~ 7in.( 12.7~ 177.8mm) , WT 0.085~ 1.000in.( 2.2~ 25.4mm) , Max.Length 13500mm. For more details, please do not hesitate to contact us.