steel price per ton 1.OD:1/2"-54" 2.WT:SCH10- ... :2008,API 4. Payment:T/T,L/C best quality and lowest price seamless carbon steel price per tonStandardASTM A106 ,ASTM A53 ,API5L,API5CT ... .0300.03082.00056570.000483The flow chart of production processOur certificate best quality and lowest price seamless carbon steel price per ton