235B is a kind of common steel in mechanical drawing, and its full name is Q235B. Plaincarbonsteelproducts are qualified products produced by plastic processing of carbon structural steel with sulfur and phosphorus contents of 0.035% ~ 0.05% and carbon content of 0.06% ~ 0.38% respectively. Ordinary steel products are mostly supplied in the form of strip, profile and wire. Ordinary steel is the earliest and most widely used basic material in industry, which is widely used in building structures, bridge components, hull structures, transportation, machinery manufacturing, agriculture, textiles, national defense industry, household appliances and other sectors of the national economy. Extended data:

Ordinary steel has good plasticity, low deformation resistance of metal, less energy consumption in production, easy quality control and simple process (the basic process is only three stages of heating, rolling and cooling). Ordinary steel is generally used directly without heat treatment, which realizes the large-scale, continuous, automatic and high-speed production at the earliest, and the production cost is low. Compared with ordinary steel, aluminum alloy has the disadvantages of lower elastic modulus, poor weldability and high cost, but aluminum alloy has the advantages of light weight, good corrosion resistance, cold resistance, good durability and beautiful appearance.