What is GRP Water Tank?

GRP water tanks is the abbreviation of Fiberglass Reinforced Plastic water tanks,are leading industry and civil standard water storage equipment on the market.There are many advantages such as lightweight,strong structure,modular and sectional assembly by standard panels design. GRP tanks provide safe environment with no risk of bacteria corrosion.

Furthermore,Due to the raw material to manufacturing water tank is self-resistant to bad weather and high temperature,meaning the water tank lifespan is long.Meanwhile,all raw materials attribution decides the water tank is pliable,application wide for any specific access or needs.

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1. Food grade unsaturated polyester resin.

2. Alkali free twist glass fiber roving.

3. Thickener (MgO), initiator (curing agent), cross linking agent,etc.


1. The size of FRP/GRP panel are produced by standard mould, having size 1*1m, 1*0.5m and 0.5*0.5m.

2. The panel thickness is depends on tank height.

3. The available highest height is 5 meters (Add external C channel or I- beam reinforcement is needed for 4m and 5m height).


Height Bottom Board Side 1 Side 2 Side 3 Side 4 Side 5 Top board
1000 mm 10 mm 10 mm 5 mm
1500 mm 10 mm 10 mm 8 mm 5 mm
2000 mm 12 mm 10 mm 8 mm 5 mm
2500 mm 12 mm 12 mm 10 mm 8 mm 5 mm
3000 mm 14 mm 14 mm 12 mm 8 mm 5 mm
3500 mm 16 mm 14 mm 12 mm 10 mm 8 mm 5 mm
4000 mm 18 mm 18 mm 14 mm 12 mm 10 mm 5 mm
4500 mm 20 mm 20 mm 16 mm 14 mm 12 mm 10 mm 5 mm
5000 mm 20 mm 20 mm 16 mm 14 mm 12 mm 10 mm 5 mm


Item 5 mm 7 mm 8 mm 10 mm 12 mm 14 mm 16 mm 18 mm 20 mm
500 x 500 mm # 4.5 kg 4.8 kg 5.8 kg 6.7 kg 7.5 kg 8.5 kg 9.5 kg #
500 x 1000 mm 7 kg # 9 kg 11 kg 13 kg 15 kg 17 kg 19 kg 21kg
1000 x 1000 mm 12 kg 14.5 kg 17.5 kg 21 kg 25 kg 29 kg 33 kg 37 kg 41 kg


Physical properties Standard requirement Result
Tensile strength ≥60 Mpa 67 MPa
Bending strength ≥120 Mpa 186 MPa
Bending modulus ≥10 GPa 12 GPa
Pap hardness ≥60 HBa 64 HBa
Bibulous rate ≤0.5% 0.11%
Glassfiber content ≥25% 30%


1. Concrete beam         2. C-channel base         3. Outer tie rod plate         4. Inner tie rod plate         5. Vertical support         6. Top angle bar         7. Manhole

8. External ladder          9. Inlet Flange         10. Horizontal tie rod          11. Side angle bar          12. Outlet pipe          13. Sealing rubber

●BOLTS & NUTS——                              1. Hot dipped galvanized                                        2. Stainless steel 304/316                                                                         

●SKID BASE ——                                    1.Painting                                                                   2.Hot dip galvanized

●INTERNAL STRUCTURE——              1. Hot dipped galvanized                                         2. Stainless steel 304/316

●FLANGES——                                        1. Hot dipped galvanized                                         2. Stainless steel 304/316                                 3. PVC

●SEALING RUBBER——                         1. Food grade white color EPDM                            2. Silicon

●WATER INDICATOR——                       1. Glass with brass valve                                         2. Float type


1. GRP is also called FRP or SMC water tank ,widely used in firefighting,residence and somewhere lacking water,modular design and standards.

2. Fiberglass water tank is assembled by pieces of panels and shape customized according to requirement and some are partitions in the between for better use.

3. GRP modular water tank can store sea water,waste water,drinking water and many kind of water,all panels are made of  food grade materials.

4. The cost is more cost effective and usually it could be used last for over 15 years with easy sectional installation( Support Installation video free)

5. GRP sectional water tank has developed more than 20 years and have a mature design,manufacturing technology and customization.


1.  All panels are made of food grade materials and comply with national standards.

2. Inner accessories and outer accessories support both drinking water and non-drinking water storing.

3. Excellent UV-resistant and weathering-resistant characteristics,corrosion-resistant and rust resistant.

4. Tank panels are made of three types including 1000 x 1000 mm,1000 x 500 mm,500 x 500 mm,better satisfy the different size of water tank requirement.

5. C-channel base is available for both bolt connection and welding connection,which surface treated with either painting or hot dip galvanized.


What are water tanks widely used for?

1. Potable Water Storage Tanks

2. Agricultural Irrigation Tanks

3. Septic Tanks and Sewage Tanks

4. Distillation and Process Tanks

5. Fire Reserve Storage Tanks,Swimming Pool Balance Tanks

6. Hot Water Storage Tanks and Chemical Substance Storage Tanks

7. Rain Water Harvesting Tanks,Well Water Tanks,Sea Water Tanks

8. Reverse-Osmosis Water Tanks(water with high or low conductivity)

9. Industrial Process Tanks,Chiller Water Tanks,Cooling Tower Water Tanks


  • What is the GRP water tank used for,drinking or not?

  • What capacity of the water tank and how many flanges?

  • Other details,please kindly let me know in advance.

  • According to above information,we design the drawings for your reference.



With over 20 years factory manufacturing experience and  five years of export experience,we designed and evolved packing a lot for delivery safety and most cost effective.

  • Iron frame for GRP/FRP panels.

  • Plywood cases for GRP/FRP panels and accessories.

  • Pallet for GRP/FRP panels and accessories.

  • Cartons and bags for small pieces of accessories.

  • Each packing will be marked with special tags from factory (Huili only),so it is easy to know which is which during water tank installation.

Connect to your next successful water tank project !



Technical support

  • According to GRP sectional water tank capacity,our engineer will provide detailed drawing for your reference.

  • Customers just need to provide concrete base according to our drawing.

  • Our water tank quotation includes all panels and accessories and C-channel base and some spare parts.

GRP water tank installation video




FRP/GRP is a kind of high-technological reinforced plastic. It has low cost and high performance, is a perfect substitute of metal tank.


Our FRP/GRP’s raw material are all international famous brand. The life-span can be over 1/4 century.


The size of panel can be 1*1 m,1*0.5 m and 0.5*0.5 m, which can assembled kinds of volume from 0.125m³ to 5000m³. That’s extremely convenient to select for you.


Factory precast panel is easy to assemble and disassemble, the construction drawing, installation video, and a series of complete installation plan will be provided.


FRP/GRP material has passed local Water Quality Inspection testing. Test result shows our FRP/GRP are suitable for potable water reserve. Roof panel adopt upward bulge to prevent rainwater remain on the top. Further prevent mosquito breeding and dirty water permeate inside the tank.



As over 20 years of water tank manufacturer,we have established 4 production lines separately for GRP modular water tank,HDG water tank,Stainless steel water tank,GSC underground water tank,which include 58 skilled engineers, 8 sets of molding pressure machines.

Except above water tank series,we could process and customize other SMC products such as electric pole protection cases,farm planting SMC series.

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