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q345b round steel pipe factories

Description: Material Q345b Steel Pipes, Material Q345b Steel Pipes As well as from structure pipe, oil pipe, and hydraulic pipe. And whether material q345b steel pipes is cold drawn, erw, or cold rolled. There are 2,158 material q345b steel pipes suppliers, mainly located in Asia. The top supplying country or region is China, which supply 100% of material q345b steel pipes

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