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  • 2021-04-27

    Resin manhole cover (also called polymer glass fiber reinforced plastic manhole cover/composite manhole cover) is a kind of glass fiber and its products (glass cloth, tape, felt, yarn, etc.) as reinforcing materials, and synthetic resin as matrix material, it is mainly composed of unsaturated polyes

  • 2021-04-27

    The composite manhole cover can be divided into two types: BMC and SMC according to market demand, production process and materials:BMC (DMC) material is the abbreviation of Bulk (Dough) molding compounds. Often referred to as unsaturated polyester bulk molding compound. Its main raw material is a m

  • 2021-04-27

    Resin manhole covers are used on the roads, which have the characteristics of insulation, no noise, no recycling value and natural anti-theft. They are irreplaceable for cast iron manhole covers. The resin manhole cover is made by a unique molding process, which makes the city look like a new one. T

  • 2021-04-27

    Ductile iron manhole cover is mainly made of Ductile iron. The quality of this manhole cover involves the problem of spheroidization rate. The commonly used paint for castings is anti-rust asphalt paint. Of course, the surface of the ductile iron manhole cover is also sprayed with anti-rust asphalt

  • 2021-04-27

    Nowadays, manhole covers are widely used in urban streets and have played an important role. On the one hand, they ensure the normal passage of people, and on the other hand, they also play a decorative role on urban roads. Therefore, the choice of manhole covers is very important. In recent years,

  • 2021-04-27

    There are many types of manhole covers, single-layer, double-layer, cast iron manhole covers, ductile iron manhole covers, composite manhole covers, cement concrete manhole covers, etc. Among them, ductile iron manhole covers are the most widely used. According to the En124 standard, manhole covers


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