Q420qD Bridge Steel

According to the information collected by the editor, medium thick plate is a flat steel with a large aspect ratio and surface area. The products can be divided into low alloy plates, boiler vessel plates, high-strength plates, ship plates, bridge plates, etc. according to their different materials, and are widely used in the electrical industry, mechanical industry, automotive industry, aviation industry, ETC.

The quality of steel plates directly affects whether the project can meet the standards. Therefore, before choosing steel plates, it is important to have a detailed understanding of the quality, parameters, and other details of the steel plates to avoid buying counterfeit and inferior products.

Medium thick plates generally have high comprehensive mechanical properties. Mechanical performance requirements include strength, plasticity, hardness, impact toughness, stiffness, etc. The process performance requirements include: welding performance, hardenability, processability, weather resistance, corrosion resistance, wear resistance, fatigue resistance, high-temperature characteristics, low-temperature characteristics, etc. The emergence and development of steel rolling mills have been going through several hundred years. In the mid-19th century, the United States began to use three roll Lauter plate mills. After entering the 1950s, China successively built more than 20 sets of three roll Lauter type mills for plate production. Since the 1980s, various enterprises have successively carried out technological transformation, replacing it with a four roll reversible plate rolling mill. The three roll Lauter mill, which has been roaring for a hundred years, has retired from the historical stage.