Go Back

FRP Water Storage Tanks

FRP (Fiberglass Reinforced Plastic) water storage tanks are robust, corrosion-proof containers designed for storing potable or process water. Constructed of fiberglass strands and resin, they have a very high strength-to-weight ratio, enabling large capacities with lightweight assemblies. FRP tanks resist rust, rot and chemical attack, lasting for decades even in harsh environments. Their smooth, non-porous interior surfaces inhibit biological growth, making them ideal for drinking water and process water storage. Available in vertical, horizontal, open-top or closed-top configurations, FRP tanks suit a wide range of volumes (from a few hundred liters to tens of thousands) and applications.

Product Inquiry

Key Features

Corrosion-Resistant Construction: Inert to acids, alkalies and chlorinated water.
Lightweight Composite: Fiberglass materials make installation and transport easy.
High Strength-to-Weight: Supports large water volumes without heavy structure.
Weather and UV Resistance: Long life in sunlight and varied temperatures (often –40°C to +80°C).
Customizable Design: Vertical/horizontal cylinders, rectangular tanks, sloped bottoms, etc.
Dual-Laminate Options: Can include a protective thermoplastic liner (PP/PVC/FRP) for extreme chemistry.
Smooth Interior: Helps meet hygiene standards for potable water storage.

Benefits

Long Service Life: Does not corrode or degrade over time, reducing repairs.
Low Maintenance: Requires little upkeep (no painting or anode replacements).
Cost-Effective: Lower lifecycle costs vs steel or concrete due to minimal corrosion.
Fast Installation: Lightweight pieces and modular construction speed assembly.
Safe Water Quality: Non-leaching materials ensure purity of stored water.
Energy Efficient: The fiberglass offers some thermal insulation for cold/hot contents.

Applications

Municipal potable water reservoirs and booster tanks.
Rainwater harvesting and storage systems.
Fire protection water storage (firewater tanks).
Process and service water storage in chemical, petrochemical, and food industries.
Irrigation and agriculture water storage.
Pre-RO (reverse osmosis) or polishing/storage in water treatment plants.
Effluent equalization (in wastewater plants) when corrosion is a concern.

Technical Specifications

Materials: FRP with polyester/vinylester/epoxy resin; optional inner liner (PP, FRP, PVDF, etc).
Capacities: Typical 1,000 L to 100,000+ L (custom sizes up to field-fabricated diameters).
Pressure Rating: Usually atmospheric (open tanks) or low-pressure (for pressurized design).
Standards: Many meet AWWA D120 (composite tanks) or EN ISO 28765, NSF-61 (drinking water).
Construction: Filament-wound or hand-layup lamination; thickness depends on size/pressure.

Unique Selling Points (USPs)

Corrosion Immunity: Unlike steel or concrete, FRP tanks never rust.
Custom Fabrication: Field-erected options for very large tanks, and variety of shapes.
NSF-61 Approval: Safe for potable water if specified.
Thermoplastic Inner Liners: Add a second layer of chemical resistance for acids/alkalis.
Fast, Modular Deployment: Many sections bolt together on site, reducing downtime.