Sewer Accessory Products
GRP Manhole Cover with Frame
Areas of Application
Private : Residences, gardens, terraces, garages, driveways, etc.
Public : Roads, pedestrian zones, parking lots, sport facilities, swimming pools, arcades, municipal sewage system etc.
Industrial: Roads, service stations, plant facilities, petrochemical plants, etc.
Manhole Covers with frame on Polymer Concrete cast
Important Features:
- - Light weight
- - Maintenance-free
- - Rust-free
- - Anti –theft locking system
- - Adaptable to manholes with carbon GRP basket
- - Adaptable to manholes with sealing GRP plate
- - The size to weight ratio is exceptional
- - Manhole cover can withstand static loading of up to 40 tons.
Al-Watani Manhole Covers are made of GRP composite materials of Vinyl Ester Resin matrix, reinforced with fiberglass resulting in a super strong and durable material. Can easily be installed and removed by one pers -on.
At top of the cover it has 2 Nos. SS316L bolts with a special key handle for lifting the manhole cover.
Qualified to BSEN 124 D400 |
Non-skid surface finish |
PHYSICAL PROPERTIES AND DESIGN VALUES OF WATANI GRP MANHOLE COVERS The following is a summary of the physical properties and design values applicable to manhole covers which are used in determining the performance of GRP in various system applications.
Physical Properties:
Hand-layup laminates | Structural Layer | ||
Specific gravity, kg/dm3 | 1.3 – 1.7 | Specific gravity, kg/dm3 | 1.8 – 2.0 |
Impact strength,kJoules/m2 | 8 | Impact strength, kJoules/ m2 | 12 |
Machinability | Good | Machinability | Good |
Barcol hardness | 25-45 | Barcol hardness | 25-45 |
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1).Successfully passed the cyclic-loading testfrom 0 to 10 tons continously for a period of 2,160 hours.
2). Load-to-destruction test. It hold the load for 1 minute at above 40 tons. No damage was noticed. Test witnessed by Kuwait MPW, later verified by British Llyods, U.K.
![]() In-service test (6 Months) – installed on un-asphalted road with heavy traffic loads. |
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Manhole Sealing Plate
Brief Description of the Process: The manufacturing process is called “Resin-Transfer-Moulding” (RTM). The composite materials of resin and reinforcements are molded on a two-piece mould which will result in “both-side-smooth” surface finished product.
Dimensions:
Inner diameter (ave.) | 562.7 mm |
Outer diameter (ave.) | 575.3 mm |
Wall Thickness (ave.) | 5.4 mm |
Glass-to-resin ratio | 35:65 |
Barcol Hardness | 50 |
Barcol Hardness | A direct load of 150 kgs. loaded at the center. Deflected 25mm at the center. |
Short Term Chemical Resistance Test:
Test medium | 10% H2SO4 |
Immersion Period | March 10, 2004 to July 15, 2004 |
Observations | No deformation or discoloration observed. |
Manhole Carbon Filter | ||||||||
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Inner Diameter: 562.7mm Outer Diameter: 575.3mm |
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Inner Diameter: 580mm Outer Diameter: 630mm
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Mud Bucket
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Dimension: 598Dx265H