Methods of surface quality inspection for steel grade S690QL

With the development of science, technology and industry, higher requirements are put forward for steel materials, such as higher strength, resistance to high temperature, high pressure, low temperature, corrosion resistance, abrasion, and other special physical and chemical properties. steel grade S690QL, carbon steel can no longer fully meet the requirements, so alloy steel plates appeared. Improving the strength of steel is one of the main purposes of adding alloying elements.

In order to improve the steel grade S690QL corrosion resistance and decoration of steel, it is an important content of steel production method to plating or coating a protective layer on the surface of plastic processed steel. The material of protective layer is divided into metal and non-metal. The metal protective layer adopts the methods of electroplating, hot plating and chemical plating. The main steel grade S690QL coating metals are zinc, tin, copper, aluminum, chromium, etc., of which zinc plating and tin plating are the most common. Taking steel grade S690QL sheet metal as an example, there are many hot-dip galvanizing methods used in sheet metal galvanizing. Continuous hot-dip galvanizing is one of the main galvanizing methods used in the world.

Based on the principle of “sincerity and win-win cooperation”, our company keeps forging ahead. In the fierce market competition, we have won the trust and rapid development of our customers with good cooperation and sincere service spirit. With pioneering spirit, the pursuit of excellence, continuous learning, and never satisfied content, we will create a win-win situation with our customers to create a better future. The company has sufficient inventory and complete varieties and specifications.

The strip steel thickness is generally below 6mm, which is convenient for crimping and processing. You should choose the steel grade S690QL, strip steel specifications according to your own purposes. The specifications and materials used for different purposes are different, so you must confirm it before buying. It is best to ask professionals to give advice before purchasing strip steel, and purchase the specifications and types you need according to the corresponding requirements.