100mm Thick Steel Asme JIS carbon steel SM490A CS plate Spot

Q690D steel belongs to high-strength welded structural steel. Among them, Q represents the yield strength, 690 represents the yield strength value, and D represents the grade of the steel plate. The quality grades of common Q690 series steel are A, B, C, D, E. The impact of grade D steel plate is -20°C. Q690D steel can be called a low temperature resistant high strength steel with a yield strength of 690Mpa.

Zhengzhou BBN steel company was established in 2000. After more than ten years of development, it has formed a professional operation pattern integrating R&D, production, sales and after-sales service. In recent years, JIS carbon steel SM490A CS plate based on a high starting point and high technology, the company has vigorously developed various steel products JIS carbon steel SM490A CS plate and deep-processed parts, steel structures, precision castings, seamless pipes.

Weathering steel generally adopts the process route of fine material into the furnace-smelting (converter, electric furnace-microalloying treatment-argon blowing-LF refining-low superheat continuous casting (feeding rare earth wire)-controlled rolling and cooling. The scrap steel is added into the furnace together with the charge, and smelted according to the conventional process. After the JIS carbon steel SM490A CS plate steel is tapped, deoxidizers and alloys are added. After the molten steel is treated with argon blowing, the molten steel is cast. By adding rare earth elements to the steel, the JIS carbon steel SM490A CS plate weathering steel is purified and the content of inclusions is greatly reduced.

Sulfur is a very harmful element in {keyword steel. The presence of sulfur will increase the hot brittleness of steel, reduce the various mechanical properties of {keyword steel, and reduce the weldability, impact toughness, fatigue resistance and corrosion resistance of steel.

Our company will accept the product quality objection registration record, pass it to the JIS carbon steel SM490A CS plate production unit and relevant departments, and timely coordinate the supervision of product JIS carbon steel SM490A CS plate quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.