What are the high strength steel plates?

Steel plates are commonly used building materials in our construction industry. High-strength steel plates are often used in power station equipment, mining machinery, bridges and other buildings due to their high-quality performance and comprehensive strength.

What are the types of high-strength steel plates:
High-strength steel plates are divided into Q390, Q420, Q460, Q550, and Q690 models. They have the characteristics of high strength and strong welding performance, so they are often used in various large-scale weldments. However, the microalloying elements contained in different types of steel plates are different. The higher the microalloy content, the greater the strength of the steel, and the carbon content in the steel will also increase.

How to buy steel:
1. When purchasing steel first, it is necessary to check whether the steel is folded, that is, there are many folds on the longitudinal surface of the steel. These folds are mainly caused by the manufacturer's pursuit of efficiency, and the reduction amount is too large to produce ears, so the next process is rolled. It is formed during manufacturing, and this steel is prone to cracking and breaking during use.
2. Secondly, when purchasing steel, it is necessary to check whether the surface of the steel has any pockmarks. If there is, it means that the steel is of inferior quality, which is caused by the use of excessive groove rolling by the manufacturer in order to reduce costs. In addition, if there is scarring on the surface of the steel, it is not recommended to buy it, mainly because the content of the steel material is not pure, or the manufacturer's production equipment is inferior, and it is easy to stick to the steel, resulting in scarring after the roll.

3. Finally, when purchasing steel, we should also pay attention to the cracks on the surface of the steel. The reason for the formation of cracks is mostly due to the use of porous adobe by the manufacturer in manufacturing, plus the effect of thermal expansion and contraction, so that after rolling with cracks on the steel.

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