The cold-bent pipes with different diameters must be equipped with the pipe-bending dies matching with them.
不同管径的冷弯管需配置与之匹配的弯管模具。
This paper introduces the producing and technology characteristics of the square and rectangular double-welded seam pipe. And designing of the pass parameters of the cold-bent channel steel.
介绍了双焊缝方矩形钢管生产技术的特点及冷弯等边槽钢孔型设计参数。
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