Atmospheric corrosion resisting structural steel, Chinese steel grade Q355GNH, GB/T 4171 standard, 09CuPCrNi-A steel spot, 09CuPCrNi-A steel plates in China
With the rapid development of science and technology and the gradual updating of the materials used by manufacturing companies, the application fields of corrosion-resistant structural steel sheets have not only expanded, they have become more and more popular among manufacturing companies, and they have gradually replaced ordinary structural steel. The development of structural steel is inseparable from the cooperation of anticorrosion technology, especially the corrosion resistance of the structure has become a swollen subject of world concern. In a sense, the anticorrosion technology of steel is the key to ensure the normal use and durability of structural steel condition.
Main characteristics for atmospheric corrosion resisting structural steel: Corrosion-resistant structural steel is made of a small amount of alloying elements such as Cu, P, Cr, Ni, etc. It can form a dense, good adhesion amorphous oxide protective film on the surface of the metal substrate, so that the corrosion process of the steel can hardly proceed. The longer the time, the denser the protective film, the more obvious the corrosion resistance, High resistance to atmospheric corrosion, it is better than general bare metal structural steel. At the initial stage of weathering steel, the rust layer formed on the surface is denser than carbon steel, and there are relatively few cracks and holes. After a period of time, the common carbon steel and weathering steel have partially delaminated. The corrosion products are not different. The difference is mainly the rust layer The role of alloying elements. The rust layer of the weathering steel has the precipitation of Cu and Cr alloy elements, which can be gathered in the cracks to resist the intrusion of water vapor and harmful ions in the atmosphere and prevent the base metal from further corrosion. So as to achieve the effect of resistance to atmospheric corrosion!
Product advantages: The corrosion resistance of steel plates is 2 to 8 times that of ordinary steel plates. The product has high dimensional accuracy, small thickness tolerances, flat surface, smooth surface, high paint performance, low carbon equivalent of steel plates, and good welding performance. Low sensitivity to hot and cold cracks.
Main application for atmospheric corrosion resisting structural steel: It is used for welding manufacturing and decoration of various transportation vehicles, environmental protection equipment, boiler preheaters, bridges, buildings, sculptures, curtain walls, engineering machinery, towers, containers, and structural parts. It is widely used in the manufacture of various structural parts with certain corrosion resistance requirements and for aesthetic decoration.
Our company's main atmospheric corrosion resisting structural steel products include garden landscape curtain wall steel plates, weather-resistant steel plates, corrosion-resistant steel plates, and cold steel plates, etc. We have a stable stock inventory all year round, and the distribution materials are 09CuPCrNi-Ast steel, Q355GNH plate, Q355NH steel, 5GNHQ345NQR2, Q310NQL2, 05CuPCrNi, Q345GNHL, B480GNQR, SPA -H, Q235NH (16CuCr), Q295NH (12MnCuCr), Q355NH (15MnCuCr), Q450NQR1, etc .; Can provide customers with high-quality open-flat, slitting, roll processing and distribution services, high accuracy and not easy to scratch the board surface, and strive to be customers Provide cost-effective materials.
