Composite Manhole Covers
Manufactured at our own factory in Kırşehir Organized Industrial Zone, Türkiye, Lima Grup composite manhole covers provide durable access solutions for infrastructure networks. Their thermoset composite construction combines mechanical strength, dimensional stability and corrosion resistance with a lower weight than conventional metal alternatives, helping simplify handling and installation.
Features
Maintains shape and functionality under mechanical and environmental stresses.
Electrically insulating material with resistance to water penetration.
Corrosion-resistant construction requiring no additional protective coating against rust.
Lightweight design that helps reduce installation time and handling costs.
High mechanical strength.
Integral colour options using pigmented polyester resin.
Suitable for painting and additional surface finishes.
Can be cut, drilled and used with screws, silicone and adhesives.
Self-extinguishing and flame-retardant properties.
Heat-resistant thermoset structure that does not soften like thermoplastic materials.
Available Models
LMH-300 — Ø600 mm cover; A: 820 mm; B: 695 mm; H: 120 mm; C250, approximately 25 tonnes.
LMH-301 — Ø600 mm cover; A: 820 mm; B: 695 mm; H: 120 mm; D400, approximately 40 tonnes.
LMH302 — Ø600 mm cover; A: 780 mm; B: 695 mm; H: 60 mm; B125, approximately 12.5 tonnes.
Rust & Corrosion Proof
Manufactured from advanced glass-fiber reinforced composites that are completely impervious to water, moisture, and the aggressive alkaline chemicals present in fresh concrete mixtures.
Non-Stick Surface
The specialized smooth interior finish naturally repels wet concrete and mortar, preventing adhesion and ensuring flawless, perfectly shaped test samples every time without structural damage.
See the advantages of glass-reinforced polyester composites
Technical Advantages of GRP Composites
Lightweight Design
Significantly lighter than traditional steel or cast-iron molds, reducing operator fatigue and accelerating daily testing workflows in both laboratories and active construction sites.
Effortless Cleaning & Maintenance
Eliminates the need for heavy, messy mold-release oils. The seamless interior design allows for rapid demolding and quick wash-downs, saving valuable time between testing cycles.
Share Your Design –
We'll Manufacture the Rest
Navigating complex molding processes and finding the right material formulation can be time-consuming, and production errors are costly. That’s why we offer end-to-end composite engineering and manufacturing services to take the technical burden off your team.
Free up your team to focus on your core business while we handle R&D, CAD design, and material formulation.
Reduce production risks with precision custom molds and tailored SMC/BMC recipes.
Keep your supply chain on track with scalable mass production and reliable global delivery.
Ensure every component is fully compliant with stringent global industrial and defense standards.