Chengyuan spiral steel pipe in Cangzhou, Hebei Province. The external diameter is 2 19-2450mm, and the wall thickness is 6-25mm. Implement the standard GB/t 9711.1.

If you produce pipe fittings, contact the enterprises in Cangzhou, Hebei Province.

The steel pipe factory recommended Shandong Huajin Pipe Industry Co., Ltd.:

Has: 60, 90 piercers, 6 cold-drawn production lines, 1 hot-rolled production lines, mainly producing cold-rolled seamless steel pipes with an outer diameter of 20 mm- 127 mm; Two are 325mmASSRL pipe mills, which mainly produce hot-rolled seamless steel pipes with an outer diameter of 133mm- 1020mm, a wall thickness of 16mm-300mm, an outer diameter accuracy of 0.5% and a wall thickness accuracy of 5%.

Company official website:

Welded pipes are generally completed by cold rolling, high frequency welding, forming and other processes. This is a slotted pipe. Seamless steel pipes can be divided into hot-rolled seamless pipes and cold-drawn seamless pipes. The heat pipe is made of blank forging, piercing, rolling, shaping and other processes.

Author: Shandong Huajin pipeline industry

Link:/question/38824252/answer/248615126.

Source: Zhihu.

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