What is seamless steel pipe manufacturing process?

- Apr 02, 2021-

Seamless steel pipe manufacturing process can be divided into two types of cold-drawn and hot-rolled.The production process of cold rolled seamless steel pipe is generally more complex than hot rolled.The billet is first subjected to a three-roll rolling process, followed by a sizing test after extrusion.Then the round tube is cut by a cutting machine, it is cut into lengths of about one metre.Then enter the annealing process.annealing with acid,liquid for pickling.When pickling to pay attention to the surface whether there is a lot of blistering, if there is a lot of blistering generated.If there is a lot of blistering, it means that the quality of the steel pipe.The quality of the steel does not meet the response standard.

 

The appearance of cold-rolled seamless steel pipe is shorter than that of hot-rolled seamless steel pipe.The wall thickness of cold rolled seamless steel pipe.The wall thickness of the cold-rolled seamless steel tube is generally smaller than that of the hot-rolled seamless steel tube.The surface does not have much roughness.


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