GRP Water Tank | Modular Fiberglass Water Storage Tank

Water Tank Structure

• Panels (including bottom panel, wall panels, roof panel, and manhole cover);
• Internal Components (including internal ladder, tie rods, supports, flanges, and rubber seals);
• External Components (including external ladder, angle iron, tie plates, bolts, and nuts);
• Base (Concrete beam,C-channel steel).

Water Tank & Panel Size Design

• FRP/GRP panels are manufactured using standard molds. Common panel sizes include 1×1 m, 1×0.5 m, and 0.5×0.5 m.
• The maximum tank height is 5 meters. For tanks exceeding 4 meters in height, external C-channel steel reinforcement is required.
• Panel thickness varies according to the tank height and pressure resistance requirements, depending on the overall tank design.

Reference for Matching Water Tank Panel Thickness and Height Values

Weight per Panel

Physical Properties

Application Scenarios

1. Civil Use:
   • Water storage for residential buildings, hotels, schools, and hospitals
   • Supports domestic water supply and fire-fighting systems
2. Industrial Use:
   • Cooling water, circulating water, process water, and wastewater treatment in factories and plants
3. Agricultural Irrigation:
   • Large-scale water storage for irrigation systems
   • Fiberglass tanks are durable, hygienic, and cost-effective for modern agricultural projects
4. Other Uses:
   • Potable water, seawater, chemical storage, hot water, rainwater harvesting, reverse-osmosis water tanks, swimming pool balance tanks, and industrial process/storage tanks

Water Tank Accessories

Internal Accessories

Horizontal Tie Rod

Enhances the structural stability of the water tank with a galvanized coating thickness of ≥100 μm.

Vertical Support

Provides support for the top, bottom, and horizontal bracing of the water tank.

Tie Rod Connection Plate

Welded to both ends of the horizontal tie rod and bolted to the tank side panels.

Rubber Sealing Strip

Food-grade sealing rubber installed between the tank panels to prevent leakage.

Leak Sealing Plug

Silicone or rubber corner blocks with stainless steel bolts to seal the internal tank corners.

Internal Ladder

Provides access to the inside of the water tank for installation and maintenance.

External Accessories

Bolts and Nuts

Used to fasten all panel connections.Fastener grade: A2-70 or A4-70.

Water Level Gauge

Float-type water level gauge made of 304 stainless steel

External Ladder

Provides access for workers to enter the top of the water tank for installation and maintenance.

Silicone Sealant

Applied for sealing the joints between panels and the corner sections.

Base Steel Beam

Increases the base contact area and distributes the weight of a fully filled tank.

Pipe terminal

The connection medium between the tank and the pipeline, which can be threaded or flanged.

For GRP/FRP water tanks, the accessories and installation methods are basically the same as those used for hot-dip galvanized water tanks in terms of overall structure and assembly.

However, for components such as flanges, water outlets, overflow outlets, and other areas that require openings in the panels, we recommend making the openings on site rather than in the factory. This is because the manufacturing process and material properties of GRP/FRP panels differ from those of hot-dip galvanized steel and stainless steel. Once an opening is made, the original panel strength may be affected, increasing the risk of secondary damage during transportation and handling.