Carbon steel is used in modern industry first, the largest amount
of basic materials. The world's industrial countries, in efforts
to increase high-strength low-alloy steel and alloy steel
production, but also paid great attention to improving the
quality of carbon steel, expanding variety and scope of use. The
current output of carbon steel in various countries in the
proportion of the total output of steel, some remained at about
*0%, it is not only widely used in buildings, bridges, railways,
vehicles, ships and machinery manufacturing industries, but also
in the modern petrochemical industry , ocean development, etc.,
have also been widely used
