With the widespread use of plastic covers mold, poor product surface roughness values ??have been very necessary to improve, low surface roughness affects the quality of life and productivity of the mold and products. High surface quality can reduce corrosion, reduce the risk of cracking, polished steel chemical composition, microstructure, hardness and carbide distribution must be uniform. Especially if they are big carbide segregation and a ribbon on the surface finish of the extremely harmful. Even a simple vacuum degassing also helps to eliminate large oxide inclusions, these smelting technology can not only reduce the amount of oxides, 700X60 covers mold and allows oxides, more uniform, while controlling the smelting and deoxygenation process, also You can change the type of inclusion, to soften and has good plasticity and toughness improves polishing performance. We usually see generally presented a circular plastic covers mold, the main reason is circular covers fit and seal better, 500X500 square covers mold, so in order to avoid trouble, many municipal drainage works will choose the round plastic covers mold. Since the round plastic covers mold in color and style are more old-fashioned, not in line with the aesthetic of young people now. In order to change the image of this rigid covers, plastic covers mold some new creative in front of everybody. These creative presentation covers not only the diversity of styles, covers mold, and even the color is rich and colorful. In the style of the shape of the covers, although they are still in the main round, but on this basis into the square, diamond, irregular. A variety of patterns, looks artistic sense. In our present life, due to urban construction continued to increase, the factory continued to expand its operations, the population living rising, and naturally a certain amount of damage, a sharp decline in air quality, which are our own to find their own sins, 600X60 covers mold, reduce and control pollution of our air everyone's responsibility, build our beautiful homeland, of workers and continuous research, and even now we are living is still relatively good, because effluents have some control, we usually are less attention to things plastic covers mold to prevent the spread of the exhaust gas into the atmosphere, covers the generation inseparable plastic covers mold, plastic covers mold appears not only to control the sewage exhaust emissions but also to our home building adds a lot of color. Plastic covers mold has advantages: high strength: Magnesite inspection with high compressive, flexural, impact strength, toughness. The product does not appear after long-term use covers are crushed and damaged phenomenon, can completely eliminate the occurrence of "urban black hole" incidents; beautiful appearance: Magnesite inspection covers the surface of the tread design beautiful, bright colors adjustable, beautify the urban environment; Acid alkali, corrosion resistance, abrasion resistance, rolling vehicles, long life; easy to use, light weight: Weight is only about one-third of cast iron, easy to transport, installation, repair, greatly reducing the labor intensity; security: Magnesite inspection covers no recycling value, natural anti-theft; according to customer needs and has a locking structure, to achieve the well property theft. 300X60 concrete manhole cover mold, mold Guohui (online consultation), covers mold die by Baoding Guohui Machinery Co. Baoding Guohui Die Machinery Co., Ltd. (www.bdguohui.com) (www.bdguohui.com) Hebei Baoding, plastic building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Guohui mold in leadership with the staff warmly welcome all inquiries negotiations to create a better future Guohui mold.