有做大口径高钢级热煨弯管的吗，如何控制钢管回弹？

天然

有做大口径高钢级热煨弯管的吗？如何控制钢管回弹？
7 r& Z$ |3 _( {. ?  w$ M6 k谢谢。

ftoldgood

有搞头，哈哈，楼主不错

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