Low alloy structural steel is made of low-alloy structural steel hot-rolled. Low-alloy steel plate were killed steel and semi-killed steel plate. Its advantages are high strength, performance than the more, can save a lot of steel, reduce the structural weight and so on. Hefei plate. (1) The main purpose of low-alloy structural steel is widely used in machinery manufacturing and metal structural parts. Steel specifications. (2) Material grades, chemical composition of steel category See related section. (3) hot-rolled steel sheet thickness Size of 4.5-200mm. Alloy content of alloying elements classified according to how much divided into low-alloy steel (alloying elements less than 5% of the total), in steel (total alloying elements of 5% -10%) higher total (high-alloy steel alloying elements 10%). By containing main alloying elements into chromium steel (Cr-Fe-C) steel chrome-nickel steel (Cr-Ni-Fe-C) manganese (Mn-Fe-C) Si-Mn steel (Si-Mn-Fe -C) Hefei steel, exhibition of Commerce Bo, 45 manganese steel by Hefei Show Bo Trading Company. Hefei Show Bo Trading Company (www.hfzhanbo.com) (www.hfzhanbo.com) strong, credible, in Hefei steel industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead the development of innovative ideas of Commerce Bo into the brilliant and you work for a better future!