Seamless steel pipes are made through processes such as perforation, hot rolling, cold drawing or cold rolling, and there are no welds on the pipe wall. Steel-free pipes have the following salient features:
1. Strong pressure-bearing capacity: Since seamless steel pipes have no welds, their overall structure is more uniform, so they have higher pressure-bearing capacity and are suitable for use in harsh environments such as high pressure and high temperature.
2. High precision: The inner and outer walls of the seamless steel pipe are smooth and the dimensional accuracy is high. It is suitable for occasions with high requirements on fluid resistance and flow control.
3. Good corrosion resistance: Seamless steel pipes can use special materials and surface treatment technologies to improve their corrosion resistance and extend their service life.

In the petroleum industry, seamless steel pipes are used in key parts such as oil well drilling and oil and gas transmission pipelines; in the chemical industry, seamless steel pipes are used in corrosion-resistant and high-temperature-resistant pipeline systems. Seamless steel pipe is a hollow strip-shaped stainless steel plate. It is often used as a pipeline for transporting fluids, such as crude oil, natural gas, water, liquefied gas, steam, etc. In addition, when the bending and torsional strength are the same, the weight will be different. It is light, so it is also widely used to produce mechanical parts and engineering structures. It is also commonly used in the manufacture of various strategic weapons, barrel rifling, bullets, etc.
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