Galvanized sheet is a steel plate coated with zinc. Galvanizing is an economical and effective preservative method that is often used. About half of the world's zinc production is used in this process.
Galvanized steel plate is to prevent corrosion on the surface of the steel plate to prolong its service life, coated with a layer of metal zinc on the surface of the steel plate, the zinc coated steel plate is called galvanized plate.

The standard-making party is different from that A36 is the material of American standard ASME standard (equivalent to ASTM specification), SS400 is the material of Japanese standard JIS G3101 (rolled steel for common structure), and Q235 is the material of national standard GB700. GB700: Q235 JIS G3101: SS400 ASME: A36

HRB400 Chinese name is hot rolled ribbed bar, diameter is 6 ~ 100mm. National mandatory standard GB1499.2 -- 2007 "reinforced concrete with hot rolled ribbed bar" from March 1, 2008 began to implement. The standard yield strength of the steel bar HRB400 is 400MPa, and the design value is 360MPa.