On February 25, 200 tons of super-thick 14mm and 16mm girder steel 700BL developed and produced by Tangshan Iron and Steel Company of Hegang Group were processed at the production site of a leading domestic special vehicle company. All indicators met customer requirements. After processing, the product will be used in the manufacture of protective parts for special vehicle compartments such as transport vehicles and tractors. This product is the first customized production based on customer needs, filling a gap in the domestic field of ultra-thick girder steel.

Girder steel 700BL, which is over 14mm, is an ultra-thick girder steel. Compared with thin girder steel, it has higher load-bearing capacity, excellent performance stability, and fatigue resistance, and can maintain performance under rain erosion and air exposure environments for a long time, and withstand the working environment of higher intensity bumpy road sections, It can be widely used in special vehicles, bridges, construction, and other fields, and has broad market prospects. Due to thicker specifications, it is more difficult to control the plate shape in production. In the field of domestic beam steel, such products have always relied on imports.

Based on continuing to promote the optimization of "two structures", Tangshan Iron and Steel has deeply connected with the market and customers, focused on the potential steel demand of industry development, giving full play to the advantages of integrating production, marketing, and research, and improved its high-end customer development capabilities and high-end new product research and development capabilities. Establish new comparative advantages in a new round of competition. In response to customers' urgent demand for ultra-thick specifications and high-strength automotive girder steel, the production, marketing, and research systems communicated in advance and collaborated closely to give full play to the advantages of technology, equipment, and talents, strengthen technical research, and accurately control the coiling temperature hit by optimizing the cooling model. This ensures good product shape and stable performance. At the same time, we strengthened the lean management of the production line, improved the tensile strength and yield strength of the product by optimizing the steel rolling process, reasonably controlled the input of precious alloys, effectively controlled production costs, expanded the space for profit growth, and the ability to create profits per ton of steel has reached the industry's advanced level.