Discover the unparalleled strength and durability of our FRP manhole cover, meticulously crafted from top-tier glass fiber materials such as glassfiber cloth and glass fiber felt, used as reinforcing elements. These are expertly combined with high-quality synthetic resins, including unsaturated polyester and epoxy resins, serving as the foundational matrix. These components are seamlessly fused through advanced molding techniques like compression and hand lay-up molding, ensuring a product that embodies strength and resilience.
Our fiberglass manhole covers are predominantly fabricated using unsaturated resin, enriched with a masterful blend of materials. This composite formulation, post-molding, results in manhole covers that boast exceptional strength and an aesthetically pleasing appearance. They are imbued with remarkable electrical insulation, waterproofing capabilities, resistance to aging, acids, alkalis, and high-impact forces. With additional attributes such as superior anti-corrosion, impact resistance, wear resistance, and resilience against the elements, including sun and rain, they are anti-static and anti-theft, positioning them as the ideal evolution beyond traditional metal counterparts.

Round manhole cover:
Specifications (inner cover*outer frame) |
Load-bearing level |
500*600(mm) |
B125/C250 |
600*700 (mm) |
B125/C250/D400 |
700*800 (mm) |
A15/B125/C250/D400 |
700*900 (mm) |
C250/D400 |
750*850 (mm) |
C250 |
800*900 (mm) |
B125/C250/D400 |
Square manhole cover:
Specifications (width*length) |
Load-bearing level |
400*600(mm) |
B125 |
300*500(mm) |
B125 |
500*500(mm) |
A15/B125/C250 |
600*600(mm) |
B125/C250/D400 |
700*700(mm) |
B125/C250/D400 |
800*800(mm) |
B125/C250/D400 |

1. Roads: Our FRP manhole covers are expertly integrated into road systems, enhancing maintenance efficiency and pipeline inspection while maintaining aesthetic appeal.
2. Squares and Parks: These manhole covers serve as both functional and decorative elements in public spaces, ensuring the protection of underlying infrastructure and enhancing the overall beauty.
3. Residential and Real Estate: In residential areas, our manhole covers are commonly found in landscape pools and pipe networks. They not only serve a protective function but also enhance community aesthetics.
Engineering Case:
Machinery and Equipment:

Hebei Richange FRP Products Co., Ltd., a beacon of innovation since its inception in August 2013, is strategically located on Weisan Road within the High-tech Development Zone, Jizhou District, Hengshui City. Championing cutting-edge product research, revolutionary design, precision manufacturing, strategic sales, meticulous installation, and outstanding after-sales service, the company harmonizes advanced technology with its expert team. Renowned for orchestrating pioneering projects nationwide, Hebei Richange stands at the forefront of the environmental protection equipment industry. Offering a distinguished portfolio, the company specializes in BWFRP cable protection pipes created through adept braided, winding, and pultruded processes; state-of-the-art integrated pump stations; robust FRP cable brackets; a diverse array of FRP molded series; and superior PVC solutions.-Materials: FRP, PPMaterials: FRP, PVDFStanding as an industry leader, our enterprise excels in the production, sales, and maintenance of FRP, carbon steel, stainless steel, and composite FRP containers. We are fortified by a comprehensive infrastructure, boasting 10 avant-garde pipe production lines utilizing braided, wound, and pultruded methodologies. Our capabilities are amplified by 12 sophisticated tank spray lining production lines, 2 inventive tank winding lines, a dedicated integrated pump station line, 2 large-scale molding machines, 3 compact molding machines, and 3 advanced sheet production lines, ensuring unparalleled efficiency and quality across our expansive product range.
1. Are you a manufacturer?
Yes, we are a manufacturer, welcome to visit our factory!
2. What's FRP?
Fiber Reinforced Polymer (FRP) is a composite material made of a polymer matrix reinforced with fibers. The fibres are usually glass, carbon, aramid, or basalt. Rarely, other fibres such as paper or wood or asbestos have been used. The polymer is usually an epoxy, vinylester or polyester thermosetting plastic, and formaldehyde resins are still in use. FRP are commonly used in the aerospace, automotive, marine, construction industries and ballistic armor.
3.How can you guarantee you product quality?
100% of our products will be tested before delivery. To control quality, we are using high quality material from high quality supplier.