schedule 40 carbon steel pipe 1.Mateial: ASTM A53-2007, API 5CT, ... ,JIS 3.OD:1/8"-30" schedule 40 carbon steel pipe Product show: schedule 40 carbon steel pipe MaterialQ195,Q215,Q235,Q345StandardBS1387 ... -1985, GB/T3091-2001, ASTM, API, DIN, JISZinc Coating200-300g/sq.mEnd TreatmentPlain ...