Composite square manhole cover

In 2009, the inspection GB/T23858-2009 was promulgated, which clarified the composite material manhole cover as the kind of inspection manhole cover, and explained its nature: using polymer as the matrix material, adding reinforcement materials, fillers, etc., composited by a predetermined process Check the manhole cover. The new standard raises the load requirement of the manhole cover and is in line with the internationally accepted EN124 standard. The standard will be implemented on February 1, 2010.

  product description

　　1. Fiber-reinforced thermosetting composite material using unsaturated polyester resin as the matrix, also known as bulk molding compound (DMC), is made with compression molding technology and is a new type of environmentally friendly cover plate. The composite manhole cover adopts high temperature and high pressure sub-molding forming technology, with high degree of polymerization, high density, good impact resistance and tensile strength, and has the advantages of wear resistance, corrosion resistance, no rust, no pollution, and maintenance-free.

　　 product

　　The inside of the composite manhole cover is reinforced by mesh steel bars, and the key stress parts are specially strengthened. When the inevitable external impact occurs, the pressure can be quickly dispersed to ensure the safety of people and vehicles.

　　 does not contain metal, and the steel frame of the stone-plastic manhole cover and concrete manhole cover is less than 1/10 of the total weight of the manhole cover. There is not much value in theft. Moreover, due to the high strength of the manhole cover, it is difficult to remove this small steel bar from the manhole cover.