Steel sewage covers typically fail within 3–5 years due to biogenic sulfide corrosion, creating both safety hazards and fugitive odor complaints. Our compression-molded FRP cover plates offer a non-sparking, non-conductive alternative that withstands continuous 100% RH humidity and H₂S concentrations up to 300 ppm. Each unit integrates a pre-cured neoprene gasket channel and optional 2" NPT vent stub to allow controlled gas extraction—a feature specifically requested by digester operators. We supply load test certificates per EN 124 A15 class and provide hole-out templates for both round and square tank flanges, enabling your maintenance teams to retrofit without welding or hot work permits.
Hebei Fortis Technology Co., Ltd Product Brochure
Product Advantages
As a specialized manufacturer of FRP sewage tank cover plates, we understand that wastewater treatment facilities demand solutions that eliminate the recurring headaches of corrosion, heavy lifting, frequent maintenance, and fugitive odor emissions — which is exactly why our covers are engineered from premium corrosion-resistant fiber-reinforced plastic that inherently withstands hydrogen sulfide, acids, and chemical attack for over three decades without the need for costly repainting or replacement, while our lightweight yet high-strength construction, weighing only one-third of steel, allows for safe manual handling and rapid installation by just two workers, significantly reducing labor costs and on-site downtime; moreover, each cover incorporates a precision-molded 3mm EPDM sealing system that delivers 100% odor containment and, when paired with our optional gas-collection dome and DN80 extraction port, enables safe biogas capture to meet strict environmental compliance standards, and because outdoor UV exposure is a constant concern, we apply a stabilized gelcoat finish that resists chalking and fading for more than ten years of sunlight exposure, all backed by full customization in size, load rating from pedestrian to vehicle-grade, surface anti-slip texture, and color to match your exact tank geometry and project specifications — ultimately, our FRP cover plates are not just a product but a long-term investment that cuts total ownership costs by nearly 40% compared to traditional steel or concrete alternatives, which is why clients across Europe, North America, and Southeast Asia repeatedly choose us as their trusted partner for durable, reliable, and cost-effective tank covering solutions.
Application Scenarios
Municipal wastewater treatment plant: It is used to cover structures such as aeration tanks, sludge thickening tanks, and primary sedimentation tanks, effectively controlling the diffusion of odorous gases like hydrogen sulfide, and providing a safe and accessible operation platform for maintenance personnel.
Industrial wastewater treatment: Applicable to wastewater tanks in industries such as chemical engineering, electroplating, pharmaceuticals, and dyeing. It can resist the corrosion of strong acids, strong alkalis, and organic solvents for a long time, and has a much longer service life than traditional metal covers.
Biogas/Energy Recovery: On the anaerobic digestion tank, a sealed cover plate with an air inlet pipe can be installed to collect biogas such as methane.
Aquaculture and food processing: Utilizing its anti-slip and easy-to-clean properties, it can be used to cover wastewater ditches or treatment ponds.
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Tel.: +86 189 3266 2725
E-mail: sale@hbfortis.com
Add.: No.8-1, Zhenxing Street, Matun Town, Zaoqiang County, Hengshui City, Hebei Province
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