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erw welding

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  • [Industry News] 2 features of ERW erw welded pipe

    1. 1 Technical advantages of ERW casing (compared to seamless casing) (1) High dimensional accuracyThe ERW casing adopts a mechanical sizing process after forming, so that the accuracy of its dimensions (outer diameter, wall thickness, roundness, etc.) is improved compared with that of the jointed c

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