Complies with GB/T 700-2006 standard, with carbon content ranging from 0.12% to 0.20%, manganese content from 0.30% to 0.70%, silicon content not exceeding 0.30%, and phosphorus and sulphur content both not exceeding 0.045%.
Processing properties: Exhibits excellent weldability, permitting connection via multiple welding methods without requiring special heat treatment post-welding. Concurrently, it possesses good cold working properties, enabling operations such as bending and stamping. During hot working, it can withstand elevated temperatures, making it suitable for processes including forging and hot rolling.

The coating on S220GD Galvalume Steel Coil is typically aluminium-zinc (Galvalume), generally comprising 55% aluminium, 43.5% zinc, and 1.5% silicon. This coating endows the steel coil with outstanding atmospheric corrosion resistance, offering 2-4 times the durability of galvanised steel sheets. It also possesses excellent heat resistance, capable of withstanding elevated temperatures.

DX52D is a flat steel product for cold forming, with a base material of low-carbon steel. The yield strength of this steel coil does not exceed 260 MPa, its tensile strength ranges between 300 and 360 MPa, and its elongation after fracture is no less than 28%. This endows it with favourable ductility and stamping properties, enabling it to withstand a degree of plastic deformation without fracturing.

Also known as galvalume or zincalume steel, aluzinc steel is a form of cold-rolled galvanized steel with a metal coating composed of 55% aluminum, 43% zinc, and 1.6% silicon. Its unique composition gives aluzinc steel some distinctive features by the combination of the physical protection and high durability of aluminum and the electrochemical protection of zinc.