The different classification methods of seamless Steel pipes are mainly as follows:
1. According to the material of seamless steel pipe, it can be divided into: 20# steel pipe, 45# steel pipe, Q345b steel pipe, Q345c steel pipe, Q345d steel pipe, Q345e steel pipe, 15crmo steel pipe, 15crmog steel pipe, 40cr steel pipe, 27simm steel pipe, 12cr1mov steel pipe, 12cr1movg steel pipe, etc.
2. According to the purpose, seamless steel pipe can be divided into fluid pipes, gas cylinder pipes, boiler pipes, petroleum pipes, steel pipes for automobiles, pipes for ships, structural pipes, etc.
3. According to the section shape, seamless steel pipe is divided into round tube, square tube and special-shaped tube.
4. According to the production method, seamless steel pipe is divided into seamless pipes and thermally expanded seamless pipes.
5. According to the type of surface coating, seamless steel pipe is divided into black tube, galvanized tube, aluminized tube, etc.
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