JinMeng Composite Manhole Covers are a product creation of high-quality fiberglass and an optimal Resin Polymer (FRP) Formula, and the outcome of automatic SMC fabrication technology. Our FRP composite manhole covers protect the underground manhole systems, bringing safety and neatness to the City, Town, or Village.
Molded from a single sheet of fiberglass composite - underside has ribbed framework for added strength. SMC is a high-engineered FRP composite material technique that comes out good quality composite covers. Jinmeng has 1500+ molds, 100+ hydraulic molding heating machines, hundreds of operators and technicians that can perform large-scale fabrication at a quick delivery.
Corrosion Free
Composite manhole cover is 100% corrosion-free and makes it the ideal covering solution for manhole systems near outdoor waters, sewer manholes where domestic wastewater gathers and discharges.And a manhole pipeline system for industrial liquid (such as oil), chemical aggressive acidic, and alkaline fluids
Authenrized Certification
Jinmeng Composite Manhole Covers are confirmed to the load class standards of EN124-5, EN1433, AASHTO, and AS3996. The company is third-party authorized by the Italian ICMQ, British UKAS, ISO9000, ISO14000, and other environmental system certifications, which definitely meet the road safety standards issued by your local government.
Safe FRP Composite
1.Jinmeng offers watertight manhole covers that prevent leakage of malodorous liquid, and gastight manhole covers seal the toxic gases. 2. Composites are nonconductive materials that will not cause an electrical hazard 3. Composite manhole covers have no resale value and have no public safety issue of uncovered manholes caused by metal cover theft.
First-class quality
This area can be customized to add text, the length of the text is customized, does not affect the operation of the entire site.This area can be customized to add text, the length of the text is customized, does not affect the operation of the entire site.
C/O 790+ mm Composite Manhole Covers
These 790 mm Composite covers are optimal for Petrol Stations, Electrical Projects, Pump Stations, and Water treatment Systems. The ultra-large size of the Clear Opening allows maintenance and replacement for equipment, consumptive material, valves, pumps, and power controllers with lage scale outer dimensions
36 inch manhole cover and frame is ideal for access to fuel control systems, underground pipework, commercial fuel storage, , AASHTO H25, allows trucks to drive over, Easy to install. With Custom Work & Fast Lead Times.
Our drain inspection cover offers the optimal solutions for municipal sewage projects and water mains. Lightweight and easy to install, safety lockable design allows inspection access, preventing both unauthorized access and eliminating the risk of anyone accidentally falling into a manhole, customized designs are compliant with various standard loading weight classes and caters to bespoke demands.
BS EN124 C250 Composite Manhole cover C/O 1100x1100mm, The most common solutions for infrastructure access for both off and on-road electric manhole applications. ideal for industrial power facilities and municipal manhole projects.
900 mm manhole cover is ideal for access to concrete tanks and pump stationsystems, underground pipework, commercial water storage, allows trucks to drive over, With Custom Work & Fast Lead Times.
C/O 700 mm Composite Manhole Cover
700 mm Composite Manhole Covers are designed for Sewer Manhole Systems near buildings where a large amount of wastewater is discharged, or underground Telecommunication Manhole Chambers in office building areas
D Class Load, Clear Opening 700 mm, Bump Stop Mount, Bolt Down Fixing, Anti Slip
C/O 650 mm Composite Manhole Cover
650 mm is a popular size of composite manhole covers, especially for sewer manhole systems and concrete-based water treatment projects that require access for maintenance and also allow car traffic.
B125 Class Load Sewer Inspection Cover, Clear Opening 650 mm sewer cover, Bolt Down fixing, Designed for areas with occasional car traffic for sewage purpose, Anti Slip Surface, nonconductive, radio friendly
D400 Class Load Sewer Inspection Chamber Cover, customized Manhole Cover size Clear Opening 650 mm, heavy duty 600mm inspection cover, Metal Hinge, Cover Latch, Security Locking, Anti Slip Surface
C/O 600 mm Composite Manhole Cover
600 mm composite manhole covers are the standard manhole tops that can cover most manholes. Jinmeng maintains more than 100 molds for this dimension, ensuring production efficiency and quick delivery.
Composite Manhole Cover 700 mm, SMC Composite, Black, 40 ton load designed for road traffic rating, sewage manhole cover manufacturer 22+ years, contact Jinmeng to get a free quote today.
We carry all sizes and configurations of Composite Manhole Cover and offer custom fabrication. Jinmeng manufactures SMC manhole cover frames in a variety of sizes, designs, and loadings. 450 mm to 1000 mm, 1.5 ton to 40 ton.
Jinmeng Composite Manhole Cover D-Class is suitable for areas open to road networks or inner road areas of major streets and freeways. A pit cover is generally deemed as a recessed pit lid that allows vehicles and pedestrians to pass over and is accessible to maintain the subterranean systems. for use in various applications such as stormwater collection, sewer infrastructure, electrical and communications uses. All Jinmeng covers are compliant with the load ratings and requirements specified in Australian Standard AS 3996. Our dedication to manufacturing a quality product has ensured that the pit covers you get from us are unmatched in terms of durability and sturdiness.
Composite D400 Manhole Cover 550x550 Inspection Cover with integral lifting keyholes. CLEAR OPENING: 550 x 550mm. LID DEPTH 50mm. FRAME DIMENSIONS: 705 x 705x100. Weight 53 KG. Ideal for sewer manhole and valve chamber applications in road sites, streets, business campuses, and industrial parks with cars and lorry traffic.
22 IN BLACK FLAT COMPOSITE MANHOLE COVER, COMPOSITE FRAME. Manufacturer, Lightweight. easy to remove, non-bolted composite manhole covers in a large selection of clear openings, colors, designs, AASHTO H25. Available driveway install
450 mm composite manhole covers are designed for sewer systems, water tanks, telecom chambers, and electrical manholes where the excavated area is limited. Like urban residential areas, a town's commercial street.
Manhole cover and frame with integral lifting keyholes. Frame Top: 450 x 450mm. LID DEPTH 50mm. FRAME Bottom DIMENSIONS: 518 x 518x75. Weight 23 KG. Ideal for road sites, street, business campus, industrial parks with cars and trucks traffic.
The material has a low dielectric constant, good toughness, flame retardancy and low temperature impact resistance, meeting the application requirements of the base station radome.
A modern SMC line ensures precise material dosing, stable sheet formation, precise fiberglass chopping, and efficient curing, automatic laminating, resulting in high-quality sheet molding composite materials with a shelf life of more than one month, which are ready for batch storage or seamless transfer to the molding fabrication workhouse.
Sampling in composite material production is a critical process used to ensure product quality, consistency, and compliance with engineering specifications.small variations in raw materials, processing conditions, or curing can significantly affect performance. Effective sampling allows manufacturers to detect issues early and maintain strict quality control.
Through continuous tracking of raw material behavior, viscosity, curing characteristics, and mechanical properties, the technician can detect variations early and maintain stable production. Advanced formulation development combines material science, testing technologies, and process optimization to create stronger, lighter, and more durable composite resins
High efficiency: Short cycle times and low labor requirements. Each operator can be responsible for 3~5 molding machines during working time. Consistency: Stable mechanical and physical properties across every batch. Design flexibility: Complex shapes, ribs, inserts, and threaded features can be molded directly. High performance: Excellent strength, corrosion resistance, and electrical insulation. Cost-effective: Ideal for medium to large-scale production with low scrap rate.
Every infrastructure project has unique conditions—load rating, corrosion resistance, installation space, and local regulations. Customized 3D design ensures the composite solution matches: Required load classes (e.g., A15, B125, C250, D400) and match underground environmental conditions
1. Produce mold drawings. 2.Conduct prototype manufacturing. 3. Create technical documents and installation guides This integrated workflow shortens development time and minimizes production errors.
Verifying structural strength and maximum load-carrying capacity. Validating design assumptions such as rib structure, thickness, and reinforcement layout. Ensuring compliance with EN 124, ASTM, ISO, or industry-specific standards. Identifying weak points to support design improvement. Load testing is especially critical for products like composite manhole covers, vaults, panels, gratings, enclosures, and structural components exposed to heavy or repeated loads.
