What is SMC manhole cover?

SMC composite material is the abbreviation of Sheet molding compound. The main raw material consists of GF (special yarn), UP (unsaturated resin), low-shrinkage additives, MD (filler) and various additives. It first appeared in the early 1960s in Europe, in 1965 or so, the United States and Japan have developed this process. China in the late 80's, the introduction of foreign advanced SMC production lines and production processes. SMC composites and its SMC molded products, with excellent electrical insulation properties, mechanical properties, thermal stability, chemical corrosion resistance. So the application range of SMC products is quite common.

Well covers are used to cover roads or deep wells at home to prevent people or objects from falling. According to the material, it can be divided into metal manhole cover, high strength fiber cement concrete manhole cover, resin manhole cover and so on. Generally round. It can be used for green belt, sidewalk, motor vehicle road, dock, alley and so on.

SMC molded manhole cover, a new type of colorful high-strength manhole cover, using advanced technology and equipment molding, by the Ministry of Construction, the National Center for Quality Supervision and Inspection of Construction Engineering, the heavy-duty manhole cover of the bearing capacity of up to 400KN or more, far more than the national standard of 240KN, and at the same time, after the National Center for Quality Supervision and Inspection of FRP testing, the aging-resistant index far exceeds the national standard. The product can be used normally from -40℃ to 90℃. The service life is longer than cast iron manhole cover for more than 5-10 years, and its performance index meets and exceeds the international requirements of similar products, and it is a newer product that replaces other kinds of manhole covers. Widely used in municipal, pipeline, channel, power supply, water supply and other projects.