What is HDG Water Tank?

HDG water tank is the short of Hot Dip Galvanized water tank,with 90 μm thick surface zinc coating of Q235 Pressed Steel. Zinc coating can help to prevent rust and corrosion over at least 10 years. HDG water tanks have the most panels types including 1000 x 1000 mm,1000 x 500 mm,500 x 500 mm,1220 x 1220 mm.So HDG water tanks are more flexible and high cost-effective.Meanwhile,the strong steel structure and zinc coating protection has made it available to be used as  underground water tank.

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1. Q235B raw material complying China GB/T 700-2006 standard.

2. Surface zinc layer 70μm thickness complying GB/T19001-2008 standard.

3. Surface treatment optional: Enamel coating.


1. The size of steel panels are produced by standard with 1.22*1.22 m,1*1 m, 1*0.5 m and 0.5*0.5 m.

2. The panel thickness is depends on tank height.

3. The maximum height available is 5 meters (Need add external reinforcement of I-beam for 5 m height).


Height Bottom Board Side 1 Side 2 Side 3 Side 4 Side 5 Top board
1000 mm 3 mm 3 mm 2 mm
1500 mm 3 mm 3 mm 3 mm 2 mm
2000 mm 3 mm 3 mm 3 mm 2 mm
2500 mm 4 mm 4 mm 3 mm 3 mm 2 mm
3000 mm 4 mm 4 mm 3 mm 3 mm 2 mm
3500 mm 4 mm 4 mm 3 mm 3 mm 2.5 mm 2 mm
4000 mm 5 mm 5 mm 4 mm 3 mm 2.5 mm 2 mm
4500 mm 5 mm 5 mm 5 mm 4 mm 3 mm 2.5 mm 2 mm
5000 mm 5 mm 5 mm 5 mm 4 mm 3 mm 2.5 mm 2 mm


Item 2 mm 2.5 mm 3 mm 4 mm 5 mm
500 x 500 mm 5.3 kg 6.9 kg 8 kg 11 kg 13.9 kg
500 x 1000 mm 9.5 kg 12.5 kg 14.6 kg 19.9 kg 25.2 kg
1000 x 1000 mm 17.4 kg 22.7 kg 26.6 kg 36.2 kg 46 kg
1220 x 1220 mm # 33.6 kg 39.3 kg 53.7 kg 68 kg


Physical properties Standard requirement Result
Tensile strength ≥350 MPa 509 MPa
Yield strength  ≥220 MPa 414 MPa
 Elongation  ≥23% 24%


1. Concrete beam         2. Outlet flange         3. Inlet flange         4. Manhole         5. External ladder        6. C-channel         7. Vertical support

8. Tie rod plate          9. Sealing rubber         10. Top angle bar

●BOLTS & NUTS——                              1. Hot dipped galvanized                                                                                                             

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

●INTERNAL STRUCTURE——              1. Hot dipped galvanized

●FLANGES——                                        1. Hot dipped galvanized                                         2. PVC

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

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


1. Hot dip galvanized water tank consists of four types of panels which can customize capacity according to local area and space.

2. The water tank height is usually set within 4 meters,we have set the water tank height up to 6 meters with my engineer good design.

3. Hot dip galvanized water tank structure is strong which can be used in underground and above ground used for storing firefighting,domestic water.

4. Hot dip galvanized water tank warranty time is 18 months since shipped out factory or 12 months since installation,based on closed one.

5. Hot dip galvanized water tank mainly used in hospital,residence,campus,supermarket,airport,football ground,irrigation,and somewhere lacking water.


1. All hot dip galvanized materials and national standard.

2. Panels consist of 1220 x 1220 mm,1000 x 1000 mm,1000 x 500 mm,500 x 500 mm four types.

3. Water tank uses the different panel thickness according to above table.

4. U-steel is optional between hot dip galvanized and painting according to customer’s requirement.

5. It could be used overhead water tank or insulated water tank.


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 HDG 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 HDG panels.

  • Plywood cases for HDG panels and accessories.

  • Pallet for HDG 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 HDG water tank capacity,our engineer will provide detailed drawing for your reference.

  • Customers just need to provide concrete base according to our drawing( Concrete base see below pictures).

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

  • For each our hot dip galvanized water tank project,we provide installation manual.

Request for installation manual



The thickness of zinc layer can be up to 70μm, have superior anti-corrosion capability.


Our panel comply the standard of Singapore PSB, SGS, China QSB, etc. The life-span can be over 1/4 century.


The size of panel can be 1.22*1.22 m, 1*1 m, 1*0.5 m and 0.5*0.5 m, which can assemble kinds of volume from 0.125 m³ to 5000 m³. 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.


Using the 1000 T hydraulic press integrated molding, no welding seam at panel corners.


All the HUILI steel material water tank can be bury underground, the thickness of inner structure and panels are thicker than normal 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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