The cold bending property of S690QL equivalent is an important index for its mechanical properties

SM490B plate is a kind of structural steel produced according to Japanese Standard JIS G3106. Min. tensile strength of SM490B plate is 490MPa. SM490B plate is mainly used in buildings, bridges, ships, rail vehicles, oil tanks, containers and other buildings requiring high-level weldability. The delivery state is hot rolling for SM490B plate, S690QL equivalent with thickness less than 80mm; and the delivery state is normalizing for SM490B steel plate with thickness more than 80mm.

Good impact resistance. Wear resistant composite steel plate uses low carbon steel or low alloy, stainless steel and other toughness as the base material. The S690QL equivalent metal material not only has good wear resistance, but also can withstand the impact and wear of falling from high to low in the transportation process. It has good heat resistance. Vanadium, molybdenum and other S690QL equivalent alloy materials are added into the alloy wear-resistant layer during the manufacturing process, so it can be used and worn at high temperature ≤ 800 ℃. Compared with ordinary S690QL equivalent carbon steel substrate, it can only be used below 380 ℃, while low alloy heat-resistant steel plate can work below 540 ℃. This shows how high the heat resistance coefficient of wear-resistant steel plate is. Good corrosion resistance.

As the thickness and hardness of S690QL equivalent increase, the tendency to crack at the cutting edge increases. In order to prevent the S690QL equivalent from cutting cracks, preheating should be carried out before S690QL equivalent cutting. Special attention should be paid to preheating to make the entire S690QL equivalent interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole S690QL equivalent cannot be preheated, the partial preheating method can be used instead.

Since its establishment, the company has participated in several key railway and highway projects. After years of development, the company’s S690QL equivalent domestic market has been exported to more than a dozen provinces and cities including Kunming, Shenzhen, Hunan, Sichuan, Shanghai, Nanjing, Heihe, Jilin, Inner Mongolia, and Xinjiang . International trade is exported to Kazakhstan, South Korea, Vietnam, South Africa and many other countries, and has been well received by customers.

The after-sales service department will pay return visit to each customer by call or email, report problems found during the return visit in time, and discuss with the production and quality inspection center to propose effective solutions and follow up in a timely manner, so as to ensure the benefits each customer are fully guaranteed, and to provide customers with more value-added services.