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API 5I welded steel pipe factory

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  • [Industry News] Welded pipe machinery’s deformation analysis

    In actual production, after the expansion stage, the mold needs to stay in the original position for a period of time, that is, the pressure-holding and stable stage. After the pressure is maintained, the die begins to return to the initial position in the radial direction and returns to the collapsed state, and the diameter of the tube blank is slightly reduced.

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