Hebei Weijia FRP Co., Ltd.| Manufacturer
Hebei Weijia FRP Co., Ltd.

China Manufacturer with main products: FRP Pipe, FRP Tank, FRP Vessel, FRP Grating, Cable Tray, Molding Grids, Pull Extrusion Profile, Packed Tower

Home  >Products Catalog > pull extrusion profile > SMC Watertight Manhole Cover Clear Open Dia 600mm C250 with Lock and Three Lockable Bolts

SMC Watertight Manhole Cover Clear Open Dia 600mm C250 with Lock and Three Lockable Bolts SafeBuy Supplier Member

FOB Price: 20.00 - 50.00 USD/Piece
Supply Ability: 500 Piece/Pieces per Week
Shipping: 30-40 working days after deposite, by sea, xingang port, china
Payment Terms: L/C, T/T
In Stock
Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Hebei in China
Packaging Details: Standartd wooden pallet package and if required, package can be made according to customer's request

Quick Details

  • Product: moulded manhole covers
  • Product Material: FRP
  • Shaping Mode: Plastic Extrusion Mould
  • Model Number: 02
  • Brand Name: WJ
  • high strength: high pressure
  • good- look: high strength epoxy resin
  • Anti UV: Eco Friendly
  • Anti-Corrosive: Rot Proof
  • Tempered Glass: Easily Assembled


burglar artistic manhole covers are suitable for a huge range of applications that include:

1. Underground Electrical Installations:
    Draw pits, traffic lights, street lighting, Fiber optic cable ducts etc.

2. Telecommunication:
    Connection chambers, Water Supply, Gas, Electric power, Telecom, Petrochemical Installation & Real estate etc.

Advantages of our products:
1. No recovery value- It can solve the manhole cover stolen problem thoroughly.
2. Quality assurance- accepted insurance by the Pacific Insurance Company and ISO9001:2008 & SGS approved.
3. High load capacity according to BS EN124 Standard- Its high load capacity exceeds the ductile iron.
4. Free design with characteristic logo & various colors - It can be designed according to users' demands.
5. Long service life- It can be used more than 30 years and there is no any crack in the experiment of 2,000,000 fatigue shocks.
6. Well sealed- It can be used hermetically, and effectively prevent those poisonous gases leaking out from cesspool.
7. No jangle- There is neither jangle nor rebound when cars pass through.
8. Good wear and corrosion resistance-It will never rust and can resist weak acid, alkali, salt and seawater..
9. Temperature resistant- It can stand temperature ranging from -40 to 80 degree

Compared with other composite materials manhole covers, burglarproof manhole covers have the following specialties:
1. Structure:
Using the structure of pot bottom style (loading equally), other than the one of ribbing style (loading centrally), the strength supporting area will extend by more than ten or dozens of times. Therefore, the ability of strength sustaining will be more excellent.

2. Material:
1) Our Burglarproof Artistic manhole covers (shorted for GRP manhole cover) are made from composite materials such as glass fiber, resin, quartz, corundum etc.
2) Applying wear-resistant and climate-resistant materials on the relief sculpture layer so that the products can be long-term used under different environment.
3) Applying continuous reinforced fiber on the structure layer to ensure the products sufficient load ability. While other composite material manhole covers (for example, BMC manhole cover) do not contain reinforced fiber, or just contain short fiber (the intensity of short fiber is 20-30% of continuous fiber);

3. Design:
Infusing the art of relief sculpture, image and color into the surface of manhole covers according to clients' demands for artistic effect, which promotes the culture taste of our products.

4. GRP manhole cover material quality
Our GRP products are made of:
-Unsaturated polyester resin (UP) (ISO type resin, vinyl ester resin)
-Glass fiber (E-glass 2400 Tex)
-Firming agent
-UV additive
-Other auxiliary materials

5. Application Temperature Scope
1) The materials used to manufacture the manhole covers are important, that is why we only use quality materials. The main material that contribute to the product application temperature is the non saturated polyester resin. It belongs to the thermosetting resin, the performance after its solidification is as follows:
2) Longitudinal strength: 250-600Mpa;
3) Compressive strength: 300-600Mpa;
4) Stretch modulus: 25-35Gpa;
5) Break elongation ratio: 1.3-10.0%;
6) Bending strength: 700-1400Mpa;
7) Curving module: 25-35Gpa;
8) Poisson-ratio: 0.35;
9) Relative density: 1.11-1.15;
10)Water-absorptivity (24h): 10-30mg;
11) Volume resistivity. 1*(1012-1014) cm
12) Unsaturated polyester resin for the reinforced plastics uses the most universal resin, general application temperature in -40~80. If there is any special request, we may introduce a special function structure to cause its temperature to be lower or higher. When the temperature approaches to -40°C, resin brittleness will occur. When temperature surpasses 80 for a long period of time (special heat resistant resin to be an exception) has the possibility to become soft or degrades. Therefore, our products application temperature is in the principle scope of -40~80.
13) C250 (can load 25tons) D400 (can load 40tons)

6. The Service LifeComposite Manhole Lid and Frames SMC Composite Square Manhole Cover
1) From the resin heat resistance view, our products under the normal temperature uses, its service life amount to above for 50 years.
2) The GRP manhole cover uses lamination compound craft on the surface layer between 5-8mm, where it joins the antioxidant to bear the marquis resin and it is filled by the aggregate of quartz, corundum and anti-friction materials (this kind of material is uses for the make grinding wheel). The surface of the manhole cover will not have any attrition because the designed 5-8mm provide wear resisting level extrapolation, it is possible to use above for 30 years.
3) The compound material of the manhole covers make sure that it could withstand more than 2 million fatigue shocks. Official tests and experiments have shown any problem on the heat resistance after more than 3 years of exposure.
4) To increase the intensity of the products, solidification craft processing is used after normal solidification process is done.

Manhole Cover Features:
1. No recycling value
2. High erosion resistance
3. Desirable breakage security
4. Shock-resistance

1. SMC Composite Manhole Cover Features:
1. Against theft ---JINMENG SMC manhole cover is non-metallic, non-conductive and non-sparking. It has no value of recycling, thus completely solving the problems caused by theft.
2. High load capacity ---Its main components are fibreglass and unsaturated resin. JINMENG's existing moulds load capacity are A15, B125, C250, D400, E600.
3. Free design
4. Long life ---Minimum lifespan of 30 maintenance free years
5. Well sealed ---It can be used hermetically, and effectively prevent those poisonous gases leaking out from cesspool. Well sealled, no noise pollution or rebound.
6. Good wear and corrosion resistance ---It will never rust because it has good wear and corrosion resistance.
7. High and low temperature resistance ---Excellent insulator against heat ( from -40° C to 200° C)
8. Lighter weight and more competitive price--- the weight of composite manhole cover especially SMC manhole cover is lighter. The composite manhole cover is more convenient to transport, install and repair.

2. Application:
(1) Electric power pipeling well; Post, telecommunication, communication pipeline well;
(2) Street lamp well, fire control well, all kinds of valve well;
(3)City water, drainage pipeline well; Heat supplied, gas well;
(4)As cover board for anti-corrosion project, open ditch; It as well as can be made according to customers requirements.
Size Remarks
Clear  Open  115x245mm              A15+ Cover  Dia  200x400mm For  road  lamps
Clear  Open  245x245mm              B125,   C250,   D400 Cover  Dia  300x300mm  For  fuel  gas  manhole 
Clear  Open  250x250mm              A15+,   B125 Cover  Dia  300x300mm  For  fuel  gas  manhole 
Clear  Open  255x395mm            A15+,   B125 Cover  Dia  300x450mm 
Clear  Open  345x485mm            A15+ Cover  Dia  400x500mm  For  road  lamps
Clear  Open  350x515mm            A15+,   B125 Cover  Dia  400x500mm 
Clear  Open  355x355mm            A15+,   B125,   C250 Cover  Dia  400x400mm
Clear  Open  450x450mm        A15+,   B125,   C250 Cover  Dia  500x500mm
Clear  Open  550x550mm       A15+,   B125,   C250 Cover  Dia  600x600mm
Clear  Open  600x600mm         C250,   D400 Cover  Dia  650x650mm Antistatic,   watertight  with  lock 
Clear  Open  450x600mm            C250,   D400 Cover  Dia  500x650mm Antistatic,   watertight  with  lock 
Clear  Open  560x720mm              B125,   C250,   D400  Cover  Dia  600x800mm 
Clear  Open  600x900mm              B125,   C250,   D400  Cover  Dia  760x1060mm  Antistatic,   watertight  with  lock 


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