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Main classification of stainless steel pipe
- Nov 04, 2017 -

The stainless steel tube is divided into ordinary carbon steel pipe, high quality carbonaceous structure steel pipe, alloy structure pipe, alloy steel pipe, bearing steel pipe, stainless steel tube and bimetal compound pipe, coating and coating pipe to save precious metal and meet special requirements. The variety of stainless steel pipe, the use of different, its technical requirements are different, production methods are also different. The current production of steel pipe outside diameter range 0.1-4500mm, wall thickness range 0.01~250mm. In order to distinguish the characteristics, the steel pipe is usually classified according to the following methods.

Production mode
Stainless steel tube According to the production mode is divided into seamless pipe and welded pipe two categories, seamless steel tube can be divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe and extruded pipe, cold drawn, cold-rolled is the steel pipe two times processing, welded pipe is divided into straight seam welded pipe and spiral welded pipe.

Section shape
The stainless steel tube according to the cross-section shape may divide into the round tube and the abnormity tube. The special-shaped tube has rectangular tube, rhombic tube, oval tube, six square tube, octagon tube and all kinds of asymmetrical pipe. Profiled pipes are widely used in various structural parts, tools and mechanical parts. Compared with the round tube, the special-shaped tube has a larger inertia moment and section modulus, has a larger bending, torsional ability, can greatly reduce the structure weight, saving steel.
Stainless steel tube According to profile shape can be divided into equal-section pipe and variable cross-section tube. Tapered pipe, ladder-shaped tube and periodic section pipe are the variable cross-section tubes.

Tube End Shape
Stainless steel pipe According to the end of the tube can be divided into light pipe and car wire pipe (with threaded steel pipe). The wire tube can be divided into common car wire pipe (conveying water, gas and other low-voltage pipe, the use of ordinary cylindrical or conical pipe thread connection) and special threaded pipe (oil, geological drilling pipe, for the important wire pipe, the use of special thread connection), for some special pipe, to make up for the thread on the tube end strength, The tube ends are thickened (thickened, externally thickened or thickened inside and outside) before the wire is usually used.

Use classification
By use can be divided into oil well pipe (casing, tubing and drill pipe, etc.), pipeline, boiler tube, mechanical structure pipe, hydraulic prop pipe, cylinder tube, geological pipe, chemical pipe (high-pressure fertilizer pipe, petroleum cracking pipe) and marine pipe.