• 1. Bent pipe technology: 弯管技术
• 2. straightening technology of bent pipe: 弯管矫直工艺

• 1.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。
  dict.yoduao.com

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