Hot rolling processes more weight than any other manufacturing process available. Finished products are usually of a very high quality but can be left covered in mill scale due to the high-temperatures during processing. This oxide is removed via pickling to leave behind a smooth surface. This method is usually employed to produce sheet metal or other materials, including: Automotive parts (frames, wheels, water heaters etc.) Agricultural equipment Compressor shells Metal buildings Guard rails
After-sales service team is a key department to test the steel quality. Product quality is always the foundation of our survival and development. The company's full inspection from raw materials to finished products; and implements standardized, scientific, and strict internal quality control and management systems in accordance with the process flow during the production process; products can only leave the factory if qualified, and follow-up problem solving systems are implemented in after-sales services to guarantee the customers’ interest.
Boiler steel plates are mainly used to manufacture various boilers and important accessories. Because the boiler steel plate is working under medium temperature (below 350°C) and high pressure, in addition to high pressure, it is also subject to impact, fatigue load and water and gas corrosion. It is required to ensure a certain strength and also have good welding and cold bending performance. Common grades: Q245R, A515 Grade 55, A515 Grade 60, A387 Gr.22 Class1 steel equivalent, A516 Grade 65, A516 Grade 70.
The quenching of steel plate is to heat the A387 Gr.22 Class1 steel equivalent steel to above the critical temperature, keep it warm for a period of time, and then quickly put it into the quenching agent, so that its temperature drops suddenly, and the speed of rapid cooling is greater than the critical cooling rate, and obtain the heat treatment method of imbalanced structure with martensite as the main body. Quenching increases the strength and hardness of steel, but reduces its plasticity. Quenching commonly used quenching agents are: water, oil, alkaline water and salt solutions.