20# carbon steel refined seamless gasoline tube 1.material: 20# 2.size:.10-530*1.5-3 mm 3.main use:oil refined 20# carbon steel refined ... seamless gasoline tube1.material:20,12CrMo,15CrMo GB9948-88 2.size:.10.530×1.5-3 3 ... B 101-106, Building Two, Section Two, Eastern Steel Market, No.118,Beihuan Road,Wuxi,China. 20# carbon steel refined seamless gasoline tube