Dom tubing

Keywords:dom tubing
Dom is the abbreviation of drawn over mandrel, which means that the welded steel pipe is processed by deep drawing or cold rolling, and the high quality steel pipe with small dimensional tolerance and good mechanical properties is obtained. Due to its small dimensional tolerance and good mechanical properties, the steel pipe is well applied in automotive applications, high-pressure pumping pumps, high-speed roller tubes, and drafting tubes for textile machines.

Performance
The DOM tubing is obtained by cold drawing (or cold rolling) from a welded pipe. The cold drawing process is the process of yielding and plastic deformation of the pipe metal, which will cause work hardening of the pipe metal. After cold drawing, the mechanical properties generally deteriorate. Cold drawing causes the plasticity of the pipe to decrease, and the strength and hardness are improved. These performance changes of the tube after cold drawing will reduce the bearing capacity of the DOM tubing and reduce the safety of use. In the cold drawing process, if the process parameters are not properly selected, it is easy to micro-crack on the surface of the pipe body, which significantly reduces the bearing capacity of the DOM tubing. In severe cases, the pipe body will break during the cold drawing process.

2. Geometric accuracy
Undoubtedly, the DOM tubing is produced by cold drawing (or cold rolling) of the base pipe, and its geometric precision is high.

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