Composite manhole cover is a kind of manhole cover made of various composite materials through scientific mixing and molding. Its manufacturing process is quite different from that of cast iron manhole cover, such as carbon fiber manhole cover, which is mainly used to improve the strength and load performance of manhole cover. It is generally known that carbon has many kinds of existing states. Due to the different arrangement of atomic structures, the physical properties of carbon vary greatly.
Cast iron manhole covers developed earlier, which were cast and processed by pig iron, and their bearing capacity and weather resistance are good; the disadvantages are high production cost and environmental pollution in the production process; once broken, they will all collapse, and the safety protection function will be lost; some production enterprises are mercenary, steal work and reduce materials, resulting in the bearing capacity of the products can not be guaranteed; the contact surface between the manhole cover and the well seat is lack of machining, In addition, due to the high recycling value of cast iron manhole cover, the illegal elements can see profits, and sell the cast iron manhole cover to the waste recycling station after being damaged and smashed. Especially in recent years, with the rise of steel price, the cast iron manhole cover is seriously damaged by human.
Zibo Best Energy-saving Materials Co., Ltd. was established in 2004, which is one of the largest composite manhole cover manufacturer in China, specializing in producing and supplying composite materials(SMC/BMC) manhole cover, rain-grating ,tree-grating, flower pot, fence and so on. Our products are strictly produced according to the BS EN124 and have obtained various kinds of certificates. Till now, our competitive products not only have good market in domestic, but also owned a large overseas market with a high reputation.
Zibo Best Energy-saving Materials Co., Ltd. was established in 2004, which is one of the largest composite manhole cover manufacturer in China, specializing in producing and supplying composite materials(SMC/BMC) manhole cover, rain-grating ,tree-grating, flower pot, fence and so on. Our products are strictly produced according to the BS EN124 and have obtained various kinds of certificates. Till now, our competitive products not only have good market in domestic, but also owned a large overseas market with a high reputation.