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The main products of BBN steel are carbon steel, mild steel and low alloy steel plates. Our business scope are ASTM carbon steel, EN carbon steel, Chinese carbon steel materials, JIS carbon steel, ASME carbon steel, DIN carbon steel, etc. The main steel grades are A36, A283C, A572 Gr 50, S235JR, S355JR, SS400, Q235, Q345, etc. The company has a sound quality assurance system. In order to open up the market and realize mutual benefit, we will serve our customers wholeheartedly with the business philosophy of "price, quality" and "integrity, service"Since it was established in 2000. Based on the domestic rich product resources and the great steel demand of the international market, our service has already spread many countries in Europe , America, Southeast Asia, Middle East, South America, Africa, etc, and we have won an outstanding reputation for its professional exporting steel productssize list of NM450 sheetSize list of NM450 sheet,Hot-rolled steel sheet / cold-rolled steel sheet: Steel ingots or slabs are difficult to deform at normal temperature and difficult to process. They need to be heated to 1100 ° C to 1250 ° C for rolling. This rolling process is called hot rolling. Rolling at room temperature is generally understood as cold rolling. However, from the point of view of metallurgy, the boundary between hot rolling and cold rolling should be distinguished by the temperature of metal recrystallization, that is, rolling below the recrystallization temperature is cold rolling; Rolling above the recrystallization temperature is hot rolling.With the increase of temperature, the yield limit of will decrease monotonically, but the tensile strength of will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of size list of NM450 sheet. Near the blue brittleness temperature, the strength increases and the plasticity decreases. The elongation and section shrinkage of size list of NM450 sheet increase with the increase of temperature, but there is a low peak at the blue brittleness temperature The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃ The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher,size list of NM450 sheet.With a high-quality and complete after-sales service system, the company solves the user's hindrance and improves the reliability of steel product quality. Reaching every corner of the globe with professional services, users anywhere can get thoughtful and detailed services form us is our pursue. We promise all our steel materials are manufactured and tested in accordance with responding standards. We will take full responsibility for the quality of the steel materials we provide.