列表:pipeline and fluid seamless pipe
API 5L X80 PSL2 line pipe (04-18)
GB/T8163 Q345E fluid seamless (01-29)
GB/T8163 Q345D fluid seamless (01-29)
GB/T8163 Q345C fluid seamless (01-29)
GB/T8163 Q345B fluid seamless (01-29)
GB/T8163 Q345A fluid seamless (01-29)
GB/T8163 Q295B fluid seamless (01-29)
GB/T8163 Q295A fluid seamless (01-29)
GB/T8163 20# fluid seamless pi (01-29)
GB/T8163 10# fluid seamless pi (01-29)
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