When buying ductile iron cover, which aspects should be paid attention to?
1. Is the toughness good? The impact value is similar to that of medium carbon steel, more than 10 times that of gray iron.
2. Chemical resistance: Choose excellent ortho-benzene, meta-benzene, vinyl resin and pultruded cast iron drainage ditch cover plate with surface felt, which has excellent corrosion resistance.
3. Whether it is light weight: The cast iron drainage ditch cover grid is made of resin and glass fiber. Its density is relatively small, only one-fourth of iron and two-thirds of aluminum, but its relative strength is higher metal.
4. Whether it is anti-ultraviolet: Add anti-ultraviolet agent and polyester surface felt in the formula to obtain better anti-ultraviolet effect.
5. Whether the designability is strong: the size is flexible and diverse and can be used according to the purpose. Site to cut cast iron gutter cover.
6. Whether the corrosion resistance is strong. In the water spray corrosion test, the corrosion amount in 90 days is only 1/40 of the steel pipe and 1/10 of the gray iron pipe. The service life is twice that of gray iron pipes and 5 times that of ordinary steel pipes.
7. Is the plasticity good? The elongation rate is ≥7%, which is similar to that of high-carbon steel, while the elongation rate of gray iron materials is zero.
8. Is the intensity high? Tensile strength ób≥420MPa, yield strength ós≥300MPa, which is the same as low-carbon steel and three times that of gray iron materials.
9. Due to the spheroidal graphite microstructure of ductile iron, ductile iron is superior to cast steel in terms of its ability to reduce vibration, so it is more conducive to reducing stress.
10. The strength of ductile cast iron is comparable to that of cast steel. Nodular cast iron has a higher yield strength, with a lower yield strength of 40k, while the yield strength of cast steel is only 36k.
Luoyang Xinsheng Plumbing Manufacturing Co., Ltd. (formerly Luoyang Xinsheng Plumbing Factory), was founded in the 1960s, registered trademark: Xinsheng Dingding; now located in the world-famous ancient capital of the thirteen dynasties-Henan·Luoyang City.
Luoyang Xinsheng Plumbing (Factory) Manufacturing Co., Ltd. is specialized in the production of cast iron, ductile, water supply and drainage pipes, high-rise flexible pipes, pipe fittings and various types of cast iron radiators, colored copper-aluminum composites, steel radiators, and high-strength composite (cement) well circles Manufacturer of manhole covers, grate, iron art, PE, welded pipe, galvanized pipe, fire-fighting trench pipe fittings. Produce according to home standards, strengthen modern management of the enterprise, and constantly update and develop new products. Super technology and complete testing equipment. Complete product specifications and quality assurance. It has repeatedly won the title of "Quality Product" and "Product of Trustworthy Quality" at provincial and municipal levels. It is a provincial and municipal key construction product. The Ministry of Construction participated in the Malaysia Expo and was exported to Britain, Spain, France, Russia, Ukraine, the United States, Japan, Sudan and other regions, and was well received by domestic and foreign users.
