What Are The Different Types Of Stainless Steel Tubes?

1. Stainless steel pipe according to material classification

It is divided into common carbon steel pipe, high quality carbon structure steel pipe, alloy structure pipe, alloy steel pipe, bearing steel pipe, stainless steel pipe and bimetal composite pipe, coating and coating pipe for saving precious metal and meeting special requirements. Stainless steel tubes are of various kinds, different uses, different technical requirements, production methods are also different.

Current production of steel pipe diameter range of 0.1-4500mm, wall thickness range of 0.01? 250 mm. In order to distinguish their characteristics, the steel pipes are usually classified as follows.

2. Classification by production mode

Stainless steel pipe according to the production mode is divided into seamless pipe and welded pipe two categories, seamless steel pipe can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extrusion pipe, etc., cold drawn, cold rolled steel pipe is the secondary processing; Welded pipe is divided into straight seam welded pipe and spiral welded pipe.

3. Classification by sectional shape

Stainless steel pipe can be divided into round pipe and special-shaped pipe according to the cross section shape. Special-shaped pipe has rectangular pipe, diamond pipe, elliptic pipe, hexagonal pipe, eight direction pipe and all kinds of asymmetrical section pipe. Special-shaped tubes are widely used in various structural parts, tools and mechanical parts.

Compared with the round tube, the special-shaped tube generally has a larger moment of inertia and section modulus, has a greater ability to resist bending and torsion, can greatly reduce the weight of the structure, save steel.

Stainless steel pipe can be divided into equal section pipe and variable section pipe according to longitudinal section shape. Variable section tube has conical tube, step tube and periodic section tube, etc.

4. Classify by pipe end shape

Stainless steel pipe can be divided into light pipe and wire pipe (with rebar pipe) according to the state of the pipe end. Turning wire pipe can be divided into ordinary turning wire pipe (conveying water, gas and other low pressure pipe, using ordinary cylindrical or conical pipe thread connection) and special threaded pipe (petroleum, geological drilling pipe, for important turning wire pipe, using special thread connection), for some special pipe, in order to make up for the influence of thread on the strength of the pipe end, The pipe end is usually thickened (inside, outside or inside) before the wire is turned.

5. Categorize by use

It can be divided into oil well pipe (casing, tubing and drill pipe, etc.), pipeline pipe, boiler pipe, mechanical structure pipe, hydraulic pillar pipe, gas cylinder pipe, geological pipe, chemical pipe (high-pressure fertilizer pipe, petroleum cracking pipe) and ship pipe, etc.

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