Mn element content of JIS SM400C plates structural

Our company is a large JIS SM400C plates steel enterprise integrating steel plate production, sales and processing. It is a first-class agent of Shanxi Taigang, Shanghai Baosteel, Jiugang, Xi'an Huaxin, Taishan steel, Dongfang special JIS SM400C plates steel and southwest special steel. It is a special dealer of famous steel plants in China, such as Columbus, NAS, acerinox, Outokumpu, Arcelor, nipponmetalindustry, nipponyakinkogyo, NSC, etc.

The company has a perfect after-sales service system and quality assurance system. The company adheres to the service principle of "all for users", and has established a professional after-sales service team. In the future service process, the after-sales service adopts regular return visit for customers. Timely understand the customer's satisfaction with our products, and solve the user's problems at any time.

We also produce various sizes of section steel, the main production methods are hot rolling, cold rolling, extrusion, forging, cold drawing and so on. Profile products have complex cross-section shape and various specifications. According to the section height, it can be divided into large section steel, JIS SM400C plates, medium and small section steel, H section steel, I section steel (I-section steel), U section steel (channel steel), l section steel (angle steel) and ball flat steel, etc. Profiles are widely used in various sectors of the national economy, such as I-beam is mainly used in building components, bridge manufacturing, ship manufacturing, etc.; channel steel is mainly used in building structures, vehicle manufacturing, etc;

20G steel is boiler steel, which is similar to No. 20 carbon steel. The difference is that 20G steel has higher and stricter inspection standards than JIS SM400C plates, No. 20 carbon steel for harmful impurities and internal defects. That is to say, 20G steel is specially produced for boiler pressure vessels. It is special purpose "No. 20 carbon steel". The use of 20G steel to make boilers is not because it is more resistant to burning than other steels such as JIS SM400C plates, but because of its strength, toughness, ductility, weldability, temperature influence, fatigue fracture, price and cost, etc. 20G steel is most suitable for use in medium and low pressure boilers.

The quality grade symbols of Q235 steel plate are A, B, C and D respectively. Different grades represent different impact temperatures. JIS SM400C plates, Q235A is not required for impact toughness test; Q235B is required for impact toughness test at room temperature (20 ℃); Q235C is required for impact toughness test at 0 ℃; Q235D is required for impact toughness test at - 20 ℃. For the above-mentioned B, C and D grade steels, Akv ≥27J is required under different temperature requirements. At different impact temperature, the impact value is also different.

It is very important for a company to have a sound after-sales service system, which better guarantees the interests of customers and increases the reliability of the company's products in the hearts of customers. Our company has a dedicated after-sales service team and good after-sales service reputation, and has been recognized by customers over the past decades. Whenever there is problem about our JIS SM400C plates steel materials during application on the user site, our after-sales service persons will assist to find solutions at the first time.