Refractories Co., Ltd., Zhengzhou City shangzhuang understand neutral alumina refractories, chromium oxide or carbon as a main ingredient. Alumina containing more than 95% of corundum article is a wider use of high quality refractory material. Chromium oxide as the main component of chromium slag bricks for good corrosion resistance, but poor thermal shock resistance, high temperature and low load deformation temperature. Carbonaceous refractory carbon bricks, graphite products and silicon carbide products, its low coefficient of thermal expansion, high thermal conductivity, good thermal shock resistance of refractories, high temperature strength, resistance to acid and salt erosion, especially in weak acid has good resistance to alkali, without wetting the refractory metal and slag where to buy, lightweight. Widely used as a high-temperature furnace lining material, also used in petroleum, chemical lined autoclave. Basic refractories magnesium oxide, calcium oxide as the main component of refractory wholesale, commonly used is brick. Magnesium containing more than 80% to 85% of the brick, alkaline slag and iron slag has good resistance, high refractoriness than clay and brick. Mainly used on open hearth, basic oxygen furnace, furnace, non-ferrous metal smelting equipment, and some high-temperature equipment. Refractoriness refractory how? Refractories Co., Ltd., Zhengzhou City shangzhuang tell you: refractoriness is not a substance is absolutely unique physical, the material was measured under specific test conditions to achieve specific soften extent relative technical indicators. The test method for materials required to make the truncated cones (the test cone) refractory sales, and has a fixed bend down at a specific temperature, heating rate standard temperature cone frustum triangle (the standard cone), common in a given heating rate and heating under certain atmospheric conditions, the degree of bending down to test the standard tapered cone bend down quite a contrast method for determining the degree of refractoriness. Refractories Company | shangzhuang Refractories (certified) | Jinan Refractories by shangzhuang Refractories Co., Ltd., Zhengzhou City. Zhengzhou City shangzhuang Refractories Co. (www.yntjj.com.cn) (www.yntjj.com.cn) is Zhengzhou, charge, flux leader, over the years, the company is implementing the scientific management, innovation and development, honesty and trustworthiness guidelines, and satisfy customer needs. In shangzhuang refractory leadership with the staff warmly welcome all inquiries negotiations to create shangzhuang Refractories a better future.