1. Stainless steel tubes are classified according to raw materials
It is divided into ordinary carbon steel pipe, high quality carbon structure steel pipe, alloy structure steel pipe, alloy steel pipe, bearing steel pipe, stainless steel pipe, double metal composite pipe, coating pipe, to save precious metals, to meet special requirements. Stainless steel pipe varieties are complex, different uses, different technical requirements, production methods are different. At that time, steel tubes were produced with outer diameters of 0.1-4500 mm and wall thickness of 0.01-250 mm. In order to distinguish their characteristics, steel pipes are generally divided into the following categories.
2. Stainless steel tubes are classified according to production methods
Stainless steel pipe according to the production method is divided into seamless pipe and welded pipe. Seamless steel tubes can be divided into heat pipe, cold rolled pipe, cold drawn pipe and kneading pipe. Cold drawing and cold rolling are the secondary processing of steel tubes. Welded pipe is divided into direct welded pipe and spiral welded pipe.
3. Stainless steel tubes are classified according to section shape
Stainless steel pipe can be divided into round pipe and special-shaped pipe according to the sectional shape. Special-shaped pipe includes rectangular pipe, diamond pipe, oval pipe, hexagonal pipe, octagon pipe and various sections of asymmetric pipe. Shaped tubes are widely used in various structural parts, articles and mechanical parts. Compared with round tubes, special-shaped tubes generally have larger moment of inertia and section modulus, and have greater bending and torsion resistance, which can greatly reduce the weight of the structure and save steel. Stainless steel pipe can be divided into constant section pipe and variable section pipe according to the shape of the longitudinal section. Variable section pipe includes conical pipe, ladder pipe and periodic section pipe.
4. Stainless steel pipe is classified according to the shape of pipe end
Stainless steel pipe can be divided into light pipe and rotary pipe (threaded pipe) according to the pipe end. Rotary pipe can be divided into ordinary rotary pipe (low pressure pipe for conveying water and gas, etc.). Common cylindrical or conical pipes are used for threaded connections) and special threaded pipes (petroleum and geological drilling pipes are used for important steel wire turning pipes). For some special pipes, pipe end thickening (inside, outside or outside) is usually performed before wire screwing in order to compensate for the effect of thread on pipe end strength.
5. Stainless steel tubes are classified according to their use
It can be divided into oil well pipes (casing, tubing and drill pipe, etc.). , pipe, boiler pipe, mechanical structure pipe, hydraulic prop pipe, gas cylinder pipe, geological pipe, chemical pipe (high pressure chemical fertilizer pipe, oil cracking pipe) and ship pipe, etc.
Post time: Dec-28-2021