There are several common end finishes for seamless steel pipes, which are used for various applications in industries such as oil and gas, construction, automobile, and others. These end finishes are achieved by using different techniques and equipment and are crucial for connecting pipes with each other or with other components of a system.
1. Plain end finish: The plain end finish is the most basic type of end finish for seamless steel pipes. It involves cutting the pipe at a right angle to its axis, leaving a smooth surface. This end finish is suitable for pipes that are not intended to be connected with other pipes or components and are used for structural or mechanical purposes.
2. Beveled end finish: The beveled end finish involves cutting the pipe at an angle to its axis, creating a sloped surface. This end finish is useful when connecting pipes with each other or with other components of a system. The sloped surface allows for easier welding, threading, or flanging of the pipe.
3. Threaded end finish: The threaded end finish involves cutting a thread onto the end of the pipe. This end finish is used when the pipe is meant to be screwed into a fitting or another pipe. Threaded end finishes are commonly used in plumbing, gas lines, and fire sprinkler systems.
4. Coupling end finish: The coupling end finish involves adding a coupling to the end of the pipes. A coupling is a fitting that allows two pipes to be connected together. This end finish is commonly used in situations where the pipes need to be disconnected and reconnected frequently, such as in hydraulic systems.
In addition to the above end finishes, seamless steel pipes may also have a range of other features, such as coating or lining, marking, or special end finishes that are specific to certain applications or industries. The choice of end finish for a particular seamless steel pipe depends on its intended use and the requirements of the system it is being installed in.
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