Carbon steel tube welding process

Keywords: carbon steel tube welding
Welding problems are sometimes encountered during the installation of carbon steel tubes. So, how to weld tubes? What should we pay attention to when welding carbon steel tubes?

1. Gas welding
Gas welding can be used for welding, which is to mix combustible gas and combustion-supporting gas together, use it as the heat source of the flame, and then melt and weld the pipes together.

2. Arc welding

Arc welding can also be used, that is, arc welding is used as the welding method. A heat source that connects the pipes together. This welding method is often used in industrial production. In addition to the above two methods, the welded pipeline can also use contact welding, and the specific method to be welded depends on the material and requirements of the pipeline.


Steel consists of iron and carbon with small amounts of miscellaneous metals, such as manganese, chromium, silicon, vanadium, and nickel. Low carbon steel contains only 0.3 percent carbon, making it incredibly easy to weld.
Medium carbon contains 0.30 to 0.60 percent carbon, and high carbon steels at 0.61 to 2.1 percent carbon. By comparison, cast iron contains up to 3 percent carbon, which makes it incredibly challenging to weld.


Carbon steel tube welding precautions:

1. Before the pipeline is welded, it is necessary to remove all the debris in the pipe. After the construction is completed, a blocking plate can be used to seal it to prevent the debris from falling into it. At the same time, before welding, it is necessary to polish the oil stains on the nozzle part until the metal-like luster appears.

2. Generally speaking, the pipe material is basically spiral welded pipe, so the welding method of manual arc can be selected. For this kind of pipe, all welds need to be bottomed by argon arc welding, and the cover needs to be Fill with manual arc welding.