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Precision steel pipe production process
Sep 01, 2017


Precision steel pipe production process is: round tube → heating → perforation → start → annealing → pickling → oiling → multi-pass cold drawn → billet → heat treatment → straightening → water pressure test → mark → storage. The rolling method of precision steel pipe is more complicated than hot rolling. The first three steps of their production process are basically the same. Differences from the fourth step, round tube blank after the air, to start, annealing. After annealing with a special acidic liquid pickling. After pickling, oiling. And then followed by a multi-pass cold drawn re-tube, a special heat treatment. After heat treatment, it is necessary to straighten. Precision steel pipe straightened by the conveyor belt sent to the metal flaw detection machine for internal testing. If the precision steel pipe cracks, bubbles and other issues, will be detected.

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