In terms of bearing grade and bearing capacity, ductile iron manhole covers have stronger bearing capacity. However, with the development of the economy and the emergence of new polymer resin materials, the load capacity of other types of manhole covers has also undergone significant changes. Today, taking resin manhole covers as an example, manhole cover manufacturers will explain to you about the bearing capacity of resin manhole covers.

There are many types of manhole cover materials. Polymer manhole cover is a new product on the market, suitable for mechanical automation production. The bearing capacity, anti-theft, economical, corrosion-resistant, and decorative properties of the manhole cover have been well combined, with a bearing capacity of even over 50 tons. Its load-bearing capacity is developing towards ductile iron manhole covers, but it started relatively late and has a relatively small market share.
What is the load of resin manhole cover? Assuming the resin manhole cover is 10kN, its bearing capacity is approximately 1 ton. In addition, the durability of resin manhole covers is also worth paying attention to. The load-bearing capacity of resin manhole covers is related to the service life of the product. Composite resin manhole covers not only achieve a state of synchronous bearing capacity and service life, but also have much lighter weight and stronger practicality compared to manhole covers made of other materials with the same bearing capacity. In terms of load-bearing capacity, resin manhole covers have a high load-bearing capacity, which has reached or exceeded relevant standards. This is because the bottom of this product adopts a special tank bottom structure, which increases the load-bearing area by more than ten times or even dozens of times. The continuous reinforcement fibers used ensure that the fibers and glass fiber cloth are integrated from the material, thereby giving the product sufficient load-bearing capacity.
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Is the resin manhole cover durable? In terms of service life, the resin manhole cover adopts high-performance resin, glass fiber, and special production process formula to ensure the penetration of resin in glass fiber, greatly enhancing the adhesion between resin and glass fiber. The service life is very long, durable, and free of internal damage, so that the material will not suffer internal damage under cyclic loading, thus ensuring the service life of the product.
Compared with ductile iron manhole covers, the load-bearing capacity of resin manhole covers is still relatively weak. But resin manhole covers have a major feature, which is anti-theft. Because its recycling value is very low, and in terms of price, manhole covers made of resin materials are cheaper.