Ferroalloy is one of the essential and important raw materials for the square tube industry and the mechanical casting industry. It is mainly used as a deoxidizer and alloying agent for steelmaking, and a casting crystal nuclei inoculant.(1) Used as a deoxidizer. In the process of steelmaking, vario
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The quality of the weld seam determines the quality of the welded pipe. Once the weld seam of the welded pipe produces pores, it will not only affect the tightness of the weld seam of the pipe, causing pipeline leakage but also become a corrosion induction point, seriously reducing the strength and
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Annealing of straight seam steel pipe is to heat the steel pipe to a certain temperature and keep it warm at this temperature and then slowly cool it to room temperature. Annealing includes complete annealing, spheroidizing annealing, and stress relief annealing.1. Heating the steel pipe to a predet
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Straight-seam steel pipes are now widely used in many fields, such as the transportation of oil and natural gas, as a result of the development and progress of society. The straight-seam steel pipe's port should be a standard circular shape, but it will be affected by some factors and deformed.
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