ERW pipe and profile machine complete line to manufacture, round square and rectangular pipes. install and start the BTM520 (76-165mm) hot and cold rolled steel coils.
中径电阻焊管生产线，用来生产圆管、方管和矩形管，起始原料是根据BTM 520标准的76 - 165 mm的热轧和冷轧钢卷。
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。
Mainly used in various industrial processes such as liquid energy, fuel gas, steam and gas measurement for square or rectangular pipe.
主要用于工业过程中各种能源如液体、燃料气、蒸气和气体的测量，适用于方形或矩形管道。
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