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cheap erw welded tube

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  • [Industry News] Welded steel pipe with some weakness

    What inherent defects may exist in the raw material of welded pipeMainly include delamination, non-metallic inclusions, segregation, bubbles, gas content, and poor metallographic structure, etc.68 How does stratification come about? What is the impact on the quality of steel pipes?The delamination i

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