What are the classifications of stainless steel pipes?

1. stainless steel pipe is classified by material

Divided into ordinary carbon steel pipe, high-quality carbon structural steel pipe, alloy structural pipe, alloy steel pipe, bearing steel pipe, Stainless Steel Pipe and bimetallic composite pipe, coating and coating pipe to save precious metals and meet special requirements. There are many types of stainless steel tubes, their uses are different, their technical requirements are different, and their production methods are different.

2. Classified by production mode

According to the production mode, the stainless steel pipe is divided into two types: seamless pipe and welded pipe. The seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe, etc. Cold drawing and cold rolling are secondary to steel pipe. Processing; welded pipes are divided into straight welded pipes and spiral welded pipes.

3. Classification by section shape

Stainless steel tubes can be divided into round tubes and shaped tubes according to the cross-sectional shape. The special-shaped tube has a rectangular tube, a rhombic tube, an elliptical tube, a hexagonal tube, an eight-sided tube, and various cross-section asymmetric tubes. Shaped tubes are widely used in a variety of structural parts, tools and mechanical parts.

4. Classified by tube end shape

The stainless steel tube can be divided into a light pipe and a wire tube (threaded steel pipe) according to the state of the pipe end. The wire tube can be divided into ordinary wire tube (transporting water, gas and other low pressure tubes, using ordinary cylindrical or conical tube thread connection) and special threaded tubes (oil, geological drilling tubes, for important wire tubes) Special threaded connection). For some special tubes, in order to compensate for the influence of the thread on the strength of the tube end, the tube end is usually thickened (inner thickening, outer thickening or inner and outer thickening) before the wire.

5. Classified by purpose

According to the application, it can be divided into oil well pipe (casing, oil pipe and drill pipe, etc.), pipeline pipe, boiler pipe, mechanical structural pipe, hydraulic pillar pipe, gas cylinder pipe, geological pipe, chemical pipe (high pressure fertilizer pipe, petroleum cracking pipe). ) and ships and other tubes.

Stainless steel pipe is a hollow strip of round steel, which is widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural components. In addition, when the bending and torsional strength are the same, the weight is light, so it is also widely used in the manufacture of mechanical parts and engineering.