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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 pipe 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 seam steel 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.