project | Cast iron type of CMC | High strength composite CMC |
grand | Recycling value, vulnerable to theft | Not stealing, no reuse value |
Corrosion resistance | Resistance to acid and alkali corrosion resistance is poor, easy to rust | Resistance to acid and alkali corrosion resistance is strong, does not rust |
Aging resistance | Low degree of resistance to aging | Highly resistant to ageing, national level 3 above |
Use cycle | 5-10 years | 15-20 years |
The compressive strength | Ultimate load of 36 t | Ultimate load 50 t |
The cost of | The cost is high | Low cost 10-15% |
Appearance of the color | Monotonous, not color | Novel, coloring, according to industry separation and rubbings |
security | Whole pieces, falling phenomenon | In auxiliary elastic steel frame, no overall risk size, the use of safe |
Use effect | Cover, low accuracy of occlusion, are prone to run, jump, ringing phenomenon | Build a bite of high precision, no running, jumping, ring phenomenon |
Environmental protection | High energy consumption, more pollution | Resource conservation, green environmental protection |
The weight of the | Heavy, F700 heavy 110-130 kg | F700 heavy 65 kg |
Service:
Customized Inscription: inscription and logo can be customized according to the client company name
Customized logo:it can be changed according to customer needs
Customized Surface Patterns :Surface pattern can be designed according to the equirements of customers but it is paid for the customer.
Customized Colors:We can provide a variety of color service.
Advantage of plastic smc composite manhole covers :
1. High load rating and strength
Similar hard property as cast iron, while have a overwhelming advantage on stretch recovery.
Designed to meet and exceed A15/B125/C250/D400 loading rating, according to En124: 1994.
Less noise and lower vibration transmissions.
2.Against theft and safety options
Zero theft value, reducing potential accident and further maintenance cost caused by thieves.
Surface anti-slip thread guarantees safe road condition even in extreme weather.
Locks are available as an option molded into the cover to improve security rate.
Non-electricity conduction and non-heat conduction.
3. Lightweight
Compared with cast iron manhole covers, composited covers are 50% lighter.
Lightweight allows more loading per vehicle, more convenient transportation and economical saving.
Allows a safer working condition, which a SINGLE worker is enough when installation without risk of injury.
4. Durable service life.
More than 30 years service life without crack and color fading, comparing to 5 years of cast iron.
Anti corrosion,water, dust and pets tight, well sealed prevent poisonous gas leaking out.
Without displacement, freely radio signal passing.
Higher and lower temperature tolerance with the range -40°C-200°C.
Wear indicators available when thread depth is in a danger value.
5. Free design
Composite material itself allows for innovative design features, clint logo is available as an option.
Much more clear resolution ratio of surface design than cast iron or BMC.
6. Carbon footprint saving and environmental care.
Lower embedded energy carbon emission and during manufacturing process than cast iron covers.
Main Features
2 good self-locking, glass fiber reinforced plastic circular manhole covers and well unique constraint link structure, prevent the car seat covers jump from well after passing the self-locking function.
3 high strength, the tensile strength of glass fiber reinforced plastic material with Q235 steel and the compressive strength is twice as tall as C30X above, shock, vibration, fatigue and fracture performance is better than that of steel, iron and other materials, used as a bearing structure covers, strength safety conditions than iron manhole covers are more likely to meet.
4 anti-theft, glass fiber reinforced plastic products without recycling value, used as a manhole cover can avoid steel manhole covers are often steal scrap selling hidden trouble, so as to prevent stolen manhole cover loss caused by person, car fall into, or card in the borehole accidents, reduce the economic loss and accident liability of owner.
5 corrosion resistance, natural corrosion resistant glass fiber reinforced plastic materials, used as acid, alkali, salt, water and other corrosive medium environment covers, with technical, economic, competitive advantage.
FRP manhole cover is to solve the problem of steel, iron manhole cover is easy to rust and stolen lost, too heavy, brittle crack defects, improve its use function and economic and social benefits and developed a new type of manhole cover.
FRP/composite material manhole cover with glass fiber and its products (glass cloth, belt, blanket, yarn, etc.) as the reinforced material, synthetic resin as matrix material, mainly composed of unsaturated polyester resin, filler, initiator, thickening agent, low shrinkage additive, film die agent, pigment and reinforced material, etc.
grating
FRP pipe