What are the raw materials for composite manhole covers?
Because the SMC polymer resin composite covers are made of resin and SMC polymer sheet pressing, without reinforcement than usual covers light weight 2/3, but this kind of SMC polymer resin composite covers and not because of its weight and reduce its carrying capacity, SMC polymer resin composite well cover bearing is three times that of ordinary resin composite manhole cover bearing, up to 90 tons
The composite manhole cover adopts high temperature and high pressure molding technology with high degree of polymerization, large density, good impact resistance and tensile strength, and has the advantages of wear resistance, corrosion resistance, no rust, no pollution, no maintenance, etc.. General composite manhole covers are also BMC composite cover and SMC composite manhole cover. SMC polymer composite manhole cover, Beijing Pan Asia Telecom's reliable, but also applied for the color of the patent
Fiber reinforced thermosetting composite material based on unsaturated polyester resin, also called group molding plastics (DMC), is made by pressing forming technology. It is a new type of environmental friendly power panel.
