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Precision seamless steel pipe

What is Precision seamless steel pipe?

Precision seamless steel pipe is a steel pipe that is resistant to weak corrosive media such as air, steam and water and chemical corrosive media such as acid, alkali and salt. Also known as stainless acid resistant steel pipe.
The corrosion resistance of Precision seamless steel pipe depends on the alloy elements contained in the steel. Chromium is the basic element that makes stainless steel obtain corrosion resistance. When the content of chromium in the steel reaches about 12%, chromium reacts with oxygen in the corrosive medium to form a thin oxide film (self-passivation film) on the steel surface, which can prevent the further corrosion of the steel substrate. In addition to chromium, the common alloy elements of stainless steel seamless pipe include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of various applications on the structure and properties of stainless steel.
Precision seamless steel pipe is a kind of hollow long round steel, widely used in oil, chemical, medical, food, light industry, mechanical instruments and other industrial transmission pipes and mechanical structural components. In addition, when the bending and torsional strength are the same, the weight is relatively light, so it is also widely used to manufacture mechanical parts and engineering structures. It is also commonly used to produce various conventional weapons, barrels, shells, etc.

Features of Precision seamless steel pipe

1. The thicker the wall thickness of Precision seamless steel pipe, the more economical and practical it will be. The thinner the wall thickness, the higher its processing cost will be;
2. The process of stainless steel seamless pipe determines its limited performance. Generally, the Precision seamless steel pipe is low: the wall thickness is uneven, the surface brightness inside and outside the pipe is low, the sizing cost is high, and there are pits and black spots on the inside and outside of the pipe, which are difficult to remove;
3. The detection and shaping of Precision seamless steel pipe must be processed offline. Therefore, it has its advantages in high pressure, high strength and mechanical structure materials.

Production process

Production steps: a. Round steel preparation; B. Heating; C. Hot rolled perforation; D. Head cutting; E. Pickling; F. Grinding; G. Lubrication; H. Cold rolling; I. Degreasing; J. Solution heat treatment; K. Straightening; L. Pipe cutting; M. Pickling; N. Finished product inspection.


Product Name 

Precision seamless steel pipe


cold rolled hot rolled 

Size (thickness)


Size (OD)



5800mm,6000mm or customized 

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