How to process stainless steel pipe? How is the inspection test conducted?

The use of stainless steel pipes on the market is also very large, and there are many points about its processing technology that we need to understand. We are also roughly clear about the use of stainless steel pipes. Let's first talk about the processing technology of stainless steel pipes.

The rolling method of cold-drawn (rolled) stainless steel pipe is more complicated than that of hot-rolled (extruded) stainless steel pipe. The first three steps of their production process are basically the same. The difference is that starting from the fourth step, after the round tube blank is hollowed out, the head must be removed and annealed. After annealing, a special acidic liquid should be used for pickling. After pickling, apply oil. Then after several cold drawing (cold rolling), the tube is billet, and special heat treatment. It will straighten after heat treatment.

The raw material of rolled stainless steel pipe is a round tube blank, which is cut by a cutting machine and processed into a blank about 1 meter long, and then sent to the furnace with a conveyor belt for heating. The billet is heated in the furnace at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. The temperature control in the furnace is the key problem. After the round tube billet is released, it needs to be perforated by a pressure punch. The common piercing machine is the conical roll piercing machine, which has the advantages of high production efficiency, good product quality, large aperture expansion, and can wear various kinds of steel.

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