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What Are The Manufacturing Steps Of Stainless Steel Seamless Pipe？

Introduction of stainless steel seamless pipe:
The manufacturing process and steps of stainless steel seamless pipe should be informed in advance that the manufacturing process of stainless steel seamless pipe is different, and the corresponding manufacturing process is also different. For example, stainless steel seamless pipe is divided into the cold rolled pipe and hot rolled pipe. For stainless steel sanitary pipes with high size and quality requirements, cold rolling, cold drawing or a combination of the two must be used.

Manufacturing steps of stainless steel seamless pipe:
Standard via 304, 316L high-quality stainless steel pipe is empty, start and de-fire operation.
1. The above operation is followed by a multi-pass cold drawing (cold rolling) process. The cold rolling of stainless steel seamless pipe is carried out on a multi-roll mill. The stainless steel seamless pipe is rolled with a circular pass composed of a variable-section circular groove and a fixed cone head.

2. The stainless steel tube after cold rolling has the advantages of a large yield coefficient, no expansion, bending, and so on. In order to meet the health grade standard of stainless steel seamless pipe, the cold-rolled pipe should be subjected to bright defire,demagnetization, pickling, straightening, and other steps.

3. Pickling stainless steel pipe, when the pipe is removed from the oil, rust, spot welding, an oxide layer, free iron, and other dirt, the surface becomes silver treated, and then the surface is uniformly pickled and passivated to prevent it from passing through Corrosion and hydrogen embrittlement of metals inhibit the production of acid mist.

4. After the above process, the next step is the polishing process of the stainless steel tube. The inner and outer walls of the pipeline are polished to a standard of 400 mesh, and the inner and outer surfaces of the pipeline are polished to a mirror surface standard (ie, hygienic standard).

5. The polished stainless steel seamless pipe should undergo internal flaw detection and strict manual selection by the steel pipe quality inspector through a metal flaw detector (or hydrostatic test), and qualified products should be packaged and delivered. The above is the Manufacturing steps of stainless steel seamless pipe.

The production process of stainless steel seamless pipe:
Production process:

1. Steel making → 2. Rolling round bar (peeling) → 3. Piercing (defiring) → 4. Cold drawing → 5. Cold rolling (defiring, demagnetizing, pickling, cleaning) → 6. Inner wall polishing (400 mesh) → 7. Exterior wall polishing (400 mesh) → 8. Air pressure test → 9. Surface test → 10. Attach the trademark and certificate of conformity × 11. Packing→12. Delivery, through the production process of stainless steel seamless pipe above, the production of stainless steel seamless pipe is finally completed.

From the above, you can learn about the manufacturing steps of stainless steel seamless pipe and the production process of stainless steel seamless pipe.

If you want to know more about stainless steel seamless pipe, please pay attention to RENZHI STAINLESS STEEL Co., Ltd. Steel companies, please feel free to contact us at any time.