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Quality carbon structural steel such adjustment is to rely on carbon steel (C) the amount to improve the mechanical properties of steel, therefore, according to the level of carbon content, these steels can be divided into: low carbon steel - carbon content is generally less than 0.25%, 10,20 such as steel, etc.; in carbon - carbon content is generally between 0.25 to 0.60%, such as 35,45 steel; high-carbon steel - carbon content is generally greater than 0.60%. Such is generally not used in the manufacture of steel pipe. In fact, they between carbon content and no clear boundaries. Such a large steel production, uses a wider, more general rolling (forging) made of round, square, flat and other profiles, sheets and seamless. Mainly for the manufacture of general structure and mechanical parts and components and structural parts and transmission fluid pipe. According to requirements, and sometimes need to heat treatment (normalizing or quenching and tempering) before use. |
