... Thickness:0.5mm--80mm 3.Length:4-14m carbon steel pipe OD6-950mmWTSCH5,SCH10,SCH20,,SCH60,SCH80,SCH100,SCH120,SCH160,XXSSpecification1 ... ; TT St35N;10Ni14;15Mo34. API:APL 5LAPI 5CT ;API LINE PIPE and so on5. we can also produce according to customer ... customer and all for customer benifit hot rolling seamless black coating carbon steel pipes