

Korea Type GRP Water Tank Features?
Material:
Made from Glass Reinforced Plastic (GRP), also known as Fiberglass Reinforced Plastic (FRP), which is highly durable and corrosion-resistant.
Modular Panel Design:
Typically constructed using modular panels, making it easy to customize the size and shape to meet specific requirements.
Hygienic & Safe for Drinking Water:
Manufactured to meet hygienic standards, ensuring clean and safe water storage.
Non-toxic and does not leach harmful substances into the water.
Corrosion & UV Resistance:
Unlike steel tanks, GRP tanks do not rust and are resistant to UV radiation, making them suitable for outdoor use.
Lightweight & Easy Installation:
Compared to concrete and steel tanks, GRP tanks are lighter, making transportation and installation more convenient.
Applications:
Used in municipal water supply, fire-fighting systems, agriculture, commercial buildings, and industrial facilities.
Korea Panel GRP Sectional Water Tank Made in China
You specialize in the design of Korean FRP (Fiberglass Reinforced Plastic) water tanks and offer both OEM and ODM services. Here’s a detailed breakdown of your expertise:
OEM (Original Equipment Manufacturing)
Clients provide the design, specifications, and branding, while you handle manufacturing.
Ensures compliance with international standards such as SS245, ISO 9001, and other relevant certifications.
Suitable for industries requiring durable, corrosion-resistant, and lightweight water storage solutions, including municipal projects, industrial applications, and commercial buildings.
ODM (Original Design Manufacturing)
You not only manufacture but also offer complete product design and technical development.
This includes structural optimization, enhanced resin formulations, improved UV resistance, and customized modular assembly solutions.
Provides clients with end-to-end solutions, from product development to mass production, ensuring high performance and durability.
Advantages of Korean FRP Water Tank Design
High Strength & Durability – Engineered to withstand harsh environmental conditions, including extreme temperatures and chemical exposure.
Lightweight & Corrosion-Resistant – Ideal for applications where traditional steel tanks may face corrosion issues.
Flexible & Customizable – Modular design allows for easy transportation, assembly, and customization based on client requirements.
Energy-Efficient & Sustainable – Manufactured using advanced resin technologies to reduce environmental impact while ensuring longevity.

Korea GRP panel

Foam sealing tape

Stainless steel flanges

External ladder

C-channel skid base

Internal lacing bar board

lacing bar

Adjustable support base(optional)
1. Korea GRP Panel
Function: A high-strength, lightweight panel used for constructing GRP (Glass Reinforced Plastic) water tanks.
Material: Fiberglass reinforced plastic, known for its corrosion resistance, durability, and lightweight nature.
Application: Commonly used in industrial, commercial, and municipal water storage applications, ensuring long-term performance in various environmental conditions.
2. Foam Sealing Tape
Function: Used for sealing between water tank panels to prevent water leakage and provide cushioning.
Material: Usually made of EPDM, PE, PU, or silicone foam, offering waterproof, weather-resistant, UV-resistant, and high-temperature-resistant properties.
Application: Essential for modular water tank assembly, ensuring a secure and watertight seal.
3. Stainless Steel Flanges
Function: Used for connecting pipes and fittings to the water tank, ensuring a secure and leak-proof joint.
Material: Stainless steel (SS304/SS316), offering high corrosion resistance.
Application: Suitable for both potable water and industrial applications, ensuring reliable water flow and system integration.
4. External Ladder
Function: Provides safe access for maintenance and inspection of the water tank.
Material: Galvanized steel, stainless steel, or aluminum, with optional anti-slip rungs.
Application: Installed on large tanks where regular inspections or cleaning are required, compliant with safety regulations.
5. C-Channel Skid Base
Function: Serves as a structural foundation for the water tank, elevating it off the ground to prevent corrosion and improve stability.
Material: Hot-dip galvanized steel or stainless steel, providing rust resistance and durability.
Application: Used in industrial and commercial water tanks where a strong base is required to distribute load evenly.
6. Internal Lacing Bar Board
Function: Strengthens the internal structure of the tank, preventing deformation due to water pressure.
Material: Galvanized steel or stainless steel.
Application: Essential for large or high-capacity water tanks, ensuring long-term structural integrity.
7. Lacing Bar
Function: Provides additional reinforcement and bracing inside the tank, supporting panels against internal water pressure.
Material: Galvanized steel or stainless steel, designed for heavy-duty applications.
Application: Used in modular panel water tanks, ensuring high durability under various pressure conditions.
8. Adjustable Support Base (Optional)
Function: Provides adjustable height and leveling support for the water tank, especially on uneven ground.
Material: Galvanized steel or stainless steel, with adjustable bolts for precise height control.
Application: Ideal for installations on irregular terrains, offering flexibility and stability.
How to make one Korea GRP water tank panel?
1. Raw Material Preparation: Pre-mixed resin with glass fiber reinforcement, fillers, catalysts, and pigment.
2. Cutting & Weighing: SMC sheets are cut into the required size and weighed carefully to match the mold cavity volume.
3. Mold Preparation: Steel molds (upper and lower) are cleaned and coated with a mold release agent.
4. Hot Press Molding: The SMC material is placed inside the mold with an additional layer of fiberglass cloth and the temperature is raised to around 130–150°C for few minutes.
5. Demolding: After curing, the panel is removed from the mold.
6. Surface Finishing: Some panels are sanded or polished for a smoother finish.
7. Drilling and Edge Treatment: Drill holes for bolts, connectors, and flanges. (Korean FRP (SMC) water tank panels are designed with all four sides at a 90-degree right angle. This square-edge structure allows for precise alignment and tight sealing between adjacent panels during assembly)
8. Quality Inspection: Dimensional checks (length, width, thickness) and Visual inspection (cracks, bubbles, finish) and Mechanical tests (flexural strength, water absorption, impact resistance).
9. Packing and Storage: Panels are stacked and packed using foam or cardboard separators.


GRP panel water tank height matches the corrresponding panel weight
Higher Tanks Require Stronger Panels: As the tank height increases, the water pressure at the bottom increases. To withstand this pressure, thicker and heavier panels are used at the lower levels.
Height | Bottom panel | Side one | Side two | Side three | Side four | Side five | Roof |
---|---|---|---|---|---|---|---|
1000 mm | 15 kg | 12.5 kg | 10.5 kg | ||||
1500 mm | 16 kg | 15 kg | 10.5 kg
(1×0.5 m half panel) |
10.5 kg | |||
2000 mm | 17.5 kg | 15 kg | 12.5 kg | 10.5 kg | |||
2500 mm | 19 kg | 16 kg | 15 kg | 10.5 kg
(1×0.5 m half panel) |
10.5 kg | ||
3000 mm | 21.5 kg | 18 kg | 15 kg | 12.5 kg | 10.5 kg | ||
3500 mm | 23 kg | 21 kg | 18 kg | 15 kg |
10.5 kg (1×0.5 m half panel) |
10.5 kg | |
4000 mm | 25 kg | 24 kg | 18 kg | 15 kg | 12.5 kg | 10.5 kg | |
4500 mm | 29 kg | 27 kg | 23 kg |
12.5 kg (1×0.5 m half panel) |
15 kg | 12.5 kg | 10.5 kg |
5000 mm | 29 kg | 27 kg | 23 kg | 18 kg | 15 kg | 12.5 kg | 10.5 kg |
Korea GRP panel performance
Characteristics | GRP panel performance | Accepted criteria |
---|---|---|
Tensile Strength (MN/m²) | > 103 | >70 (min) |
Bending Strength (MN/m²) | > 191 | > 100 (min) |
Elastic Modulus in Bend (MN/m²) | > 12260 | > 6000 (min) |
Glass Content (%) | > 33 | > 25 (min) |
Barcol Hardness | 57 | >30 (min) |
Water Absorption (%) | 0.1 | 0.5 (max) |
WRAS approved for Korea GRP panel water tank
WRAS (Water Regulations Advisory Scheme) certification is a mandatory requirement in the UK to ensure that products in contact with drinking water do not contaminate the water and comply with the Water Supply (Water Fittings) Regulations. For FRP/GRP (Fiberglass Reinforced Plastic) water tanks, WRAS testing mainly focuses on the following areas:
Material Safety Testing
Verifying that GRP materials (resin, fiberglass, adhesives, etc.) do not release harmful substances into drinking water.
Testing is conducted according to the BS 6920 standard for non-metallic materials by a WRAS-approved laboratory.
Mechanical and Structural Performance Testing
Testing the tank’s stability when fully filled, checking for leakage, rupture, or deformation.
Includes static pressure and durability tests.
Surface and Cleanability Testing
Ensuring the internal surfaces of the tank are smooth, free of dead corners, easy to clean, and prevent bacterial growth.
Surfaces must be free from flaking, peeling, or cracking.
Aging Resistance
Assessing whether the material’s performance deteriorates or releases harmful substances under long-term water immersion, high temperatures, or UV exposure.
Migration Testing (Non-metallic Materials Migration Test)
Conducted by soaking the material under specified time and temperature conditions to detect any excessive migration of chemical substances into the water.
Evaluates parameters like odor, taste, color, and toxicity.
What Huili Can do for your water tank solution?
Korea GRP Panel Water Tank Showing
Showcasing 12-Turning Korea GRP Water Tank – Complex Custom Design for Singapore Project
This project features a uniquely complex 12-turning Korea GRP sectional water tank, custom-designed and installed by Huili for a facility in Singapore. The intricate layout required advanced engineering solutions to navigate space constraints while maintaining full functionality and structural integrity. This case showcases Huili’s expertise in delivering highly customized Korea-type GRP water tanks for challenging environments.
If you are interested in Korea-type GRP water tank also,just drop me email [email protected] or text Whatsapp:+8618505343912



Showcasing Huili’s Capability in Large and Tall Korea GRP Panel Sectional Water Tanks
Huili is not only experienced in designing and installing complex multi-turning water tanks like above Singapore project, but also in delivering large-scale and tall tanks. The following two projects feature Korea GRP panel sectional water tanks with capacities over 1000 cubic meters and a height of 5 meters.

Indonesia Korea panel GRP water tank 20x18x3m

Indonesia project 14(7+7)x7x5m (With partition)
Traditional GRP Panel water tank (National Standard 12S101)(Optional).
We make two types of GRP water tanks, one is above Korea GRP water tank(SS245 standard), one is below traditional GRP water tank (National Standard 12S101).
Below projects are our national standard GRP water tanks.
If you are interested in national standard GRP water tank also,just drop me email [email protected] or text Whatsapp:+8618505343912
Elevated (Overhead) GRP Panel Sectional Water Tank vs Ground GRP Water Tank
According to the installation position, GRP panel water tanks (called FRP water tank or SMC water tank) can be categorized into elevated (or overhead) water tanks and ground (or on-ground) water tanks. Here’s a detailed description of each type:
Elevated GRP Water Tank (Overhead GRP Water Tank)
Installation Position: Installed at a height, usually on top of a tower, steel support structure, or building rooftop.
Purpose:
Provides gravity-fed water supply, eliminating the need for continuous pumping.
Ensures stable water pressure for residential, commercial, and industrial applications.
Commonly used in municipal water supply systems, high-rise buildings, agricultural irrigation, and firefighting systems.
Structural Features:
Requires strong supporting structures (concrete or steel towers) to bear the weight of the filled tank.
The tank is often designed with corrosion-resistant coatings to withstand outdoor exposure.
Can be constructed in modular panel form for easy transportation and assembly.
Advantages:
Energy-efficient: Uses gravity instead of relying on pumps.
Reliable water supply even during power outages.
Disadvantages:
Higher installation cost due to the need for a support structure.
Requires structural reinforcement for earthquake and wind resistance.
Ground GRP Water Tank (On-Ground Water Tank)
Installation Position: Installed directly on the ground or on a concrete base/foundation.
Purpose:
Used for water storage in factories, fire protection, agriculture, and residential areas.
Serves as a backup water supply in case of shortages or emergencies.
Structural Features:
Typically modular and assembled using galvanized steel panels.
Often equipped with inlet, outlet, overflow, and drainage pipes for efficient water management.
Can be customized in various sizes and shapes to fit available space.
Advantages:
Easier installation with lower structural requirements.
Scalable: Can be expanded by adding more panels.
Disadvantages:
Needs a pump to distribute water at higher pressure.
Takes up more ground space, which may not be ideal in urban areas.
Comparison Summary
Feature | Elevated GRP Water Tank | Ground GRP Water Tank |
---|---|---|
Installation | Installed on steel towers or concrete supports | Placed on concrete base or embedded into the ground |
Water Supply | Gravity-fed system, reduces need for pumps | Requires pumps for water distribution |
Maintenance | More difficult due to height, needs scaffolding | Easy access for cleaning and inspections |
Initial Cost | Higher, due to support structure | Lower, no elevation structure required |
Operation Cost | Lower in long term (uses gravity) | Higher due to continuous pump operation |
Typical Applications | Rural water supply, agricultural irrigation, backup use | Urban water systems, residential buildings, factories |

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