1000m³ HDG Water Tank for Building Domestic Water Supply

HDG water tanks are designed for high-rise buildings, providing stable domestic water supply, secondary water supply systems, and emergency fire water storage.
With high strength, corrosion resistance, and flexible installation, they are ideal for residential, commercial, hotel, hospital, and industrial applications.

Key Points Tag :

Customizable
15 years of experience
Original Manufacturer
Full product range
Shipping/Land transport
Wire Transfer

With the rapid development of urbanization, high-rise buildings are becoming increasingly common. The skyline of a city, represented by its high-rise building complexes, has become an important symbol of economic development. From major cities in China to developed countries and regions such as Japan, Singapore, South Korea, and Europe, the number of high-rise residential buildings, office towers, and commercial buildings continues to grow. The normal operation of these buildings relies on a stable, safe, and reliable water supply system.

Water Demand and Storage Challenges in High-Rise Buildings

High-rise buildings require a large and stable domestic water supply every day to meet the needs of different areas, including:

  • Residential drinking water
  • Commercial office water supply
  • Hotel guest room water supply
  • Restaurant and kitchen water supply
  • Public area cleaning water
  • Toilet water supply
  • Shower and bathing water
Large Capacity Hot-Dip Galvanized Water Tank System for Building Water Supply

Due to the height of high-rise buildings and the distribution of water consumption areas, the water supply system must have sufficient storage capacity and continuous water supply capability. Hot-dip galvanized modular water tanks are widely used in high-rise building domestic water supply systems due to their high strength, corrosion resistance, structural stability, and flexible installation.

Suitable for:

  • High-rise residential communities
  • Apartment buildings
  • School dormitories
  • Mixed-use commercial and residential complexes
  • Shopping malls
  • Hotels
  • Office buildings
  • Hospitals

Municipal Water Pressure Cannot Fully Cover High-Rise Areas

Municipal water supply systems are designed to meet the overall needs of urban areas, but different building heights create significant differences in water pressure requirements. Relying only on municipal water pressure cannot guarantee stable water supply for all floors. Especially during peak water consumption periods, upper floors of high-rise buildings may experience insufficient water pressure.

Therefore, high-rise buildings usually adopt secondary water supply systems, consisting of:

  • Municipal water supply
  • Water storage tanks
  • Booster pump systems
  • Floor-level water distribution networks

to achieve continuous and stable domestic water supply.

Currently:

  • A large number of high-rise residential buildings in China use secondary water supply systems;
  • High-rise residential buildings in Singapore commonly adopt zoned water supply systems and storage facilities;
  • Due to the dry climate, large buildings in the Middle East rely more heavily on water storage systems.
Hot-Dip Galvanized Fire Reserve Water Tank for High-Rise Residential Buildings

Application of Hot-Dip Galvanized Water Tanks in High-Rise Building Fire Protection Systems

In addition to daily domestic water supply, high-rise buildings have stricter requirements for emergency fire water storage. A reliable water source must be available to provide rapid response and support firefighting operations in the event of a fire.

According to building fire protection system design requirements, high-rise buildings usually need to be equipped with:

  • Fire water reservoirs
  • Fire water tanks
  • Fire pump systems

Hot-dip galvanized modular water tanks can be used for:

  • Firefighting reserve water storage
  • Rooftop fire water tanks
  • Underground fire water storage systems
  • Fire protection facilities for industrial and commercial buildings

Modular Panel Standard

We offer a variety of panel sizes:

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

Among them, the 1220 × 1220 mm (4ft × 4ft) panel is our main product, supplied globally on a stable basis. It is especially popular in Southeast Asia, India, the Middle East, South America, and Africa.

4ft × 4ft International Standard Module

Unlike non-standard tank systems, our product is designed based on the globally recognized 4ft × 4ft modular grid system:

  • Standard panel size: 1220 × 1220 mm (4ft × 4ft)
  • Compatible with international engineering design standards
  • Optimized for container loading and shipping efficiency
  • Reduces on-site labor and installation cost
  • Improves construction efficiency

👉 Especially suitable for projects in the USA, Canada, Australia, the Middle East, and Africa.

1×1m Hot-Dip Galvanized Modular Tank Panel Without Drilling Holes

Material and Galvanized Layer Quality Inspection

Test ItemTechnical RequirementTest Result
Steel Plate Base MaterialQ235B high-quality carbon structural steelQualified
Zinc Ingot PurityZinc content ≥99.995%99.996%
Welding MaterialER50-6 welding wire, conforming to GB/T 8110 standardER50-6 welding wire, intact package, surface free from rust and oil contamination
Sealing Gasket MaterialEthylene Propylene Diene Monomer (EPDM)No odor, good elasticity
Bolt and Fastener MaterialSUS304 stainless steel or hot-dip galvanized treatment, tensile strength ≥500MPaSUS304 stainless steel, tensile strength 615MPa
Galvanizing ProcessHot-dip galvanizingHot-dip galvanized, smooth surface, no missed coating
Average Zinc Coating Thickness≥80μm (or ≥85μm)92μm
Minimum Local Zinc Coating Thickness≥70μm78μm
Zinc Coating Weight≥573.5g/m²578.6g/m²
Zinc Coating UniformityNo iron exposure after 5 times copper sulfate testNo copper deposition and no exposed iron substrate after 5 immersions
Zinc Coating AdhesionCross-cut test grade ≥4B5B, smooth cutting edges without peeling
Salt Spray ResistanceNo red rust after NSS salt spray test ≥96 hours240 hours continuous test, no red rust, only slight white rust

Strength and Mechanical Property Inspection

Test ItemTechnical RequirementTest Result
Yield Strength(ReH)≥235MPa265MPa
Tensile Strength(RM)370-500MPa415MPa
Elongation After Fracture≥20%29.5%
Cold Bending Performance180° bending, no cracks on outer surfaceNo visible cracks on tensile surface and edges after 180° bending
Hardness TestHBW≤150HBW135
Full Water Structural DeformationMaximum deflection of tank wall <L/500Maximum deflection 2.1mm, standard limit 4.0mm

Safety Immersion Test

Test ItemTechnical RequirementTest Result
ColorIncrement ≤5 degrees<5 degrees
TurbidityIncrement ≤0.2NTU0.15NTU
Odor and TasteNo abnormal odor or taste after immersionNone
Visible MatterShall not containNone
pH ValueVariation ≤0.50.15
Oxygen ConsumptionIncrement ≤1mg/L0.65mg/L
Volatile PhenolsIncrement ≤0.002mg/L<0.002mg/L
Total Dissolved SolidsIncrement ≤10mg/L188mg/L
Chromium(Hexavalent)Increment ≤0.005mg/L<0.004mg/L
MercuryIncrement ≤0.001mg/L<0.0002mg/L
AluminumIncrement ≤0.02mg/L<0.001mg/L
ManganeseIncrement ≤0.02mg/L0.0003mg/L
IronIncrement ≤0.06mg/L0.015mg/L
NickelIncrement ≤0.002mg/L0.0005mg/L
CopperIncrement ≤0.2mg/L0.004mg/L

Leakage and Sealing Performance Inspection

Test ItemTechnical RequirementTest Result
Full Water Leakage TestFill the tank with water and keep it for ≥2 hours, no leakage shall occur on the tank body and connectionsFilled with water and kept for 24 hours, no water level drop, no leakage on tank body and connections
Flange Connection SealingNo leakage under 1.5 times working pressurePressurized to 0.9MPa and maintained for 30 minutes, no leakage at joints
Weld Non-destructive TestingNo defects such as pores, slag inclusion and lack of fusion shall be found in sampled welds20 welds inspected by ultrasonic testing, internal quality meets Grade I requirements

Structural Design

The tank is composed of:

  • Standard modular panels
  • Reinforced angle steel frame structure
  • High-strength galvanized bolting system
  • Internal tie-rod support system
  • Food-grade EPDM sealing gasket
  • Internal & external ladders (optional)
  • Manhole access cover
  • Water level indicator interface
  • Inlet/outlet flange connections
Large Capacity Hot-Dip Galvanized Water Tank System for Building Water Supply

Applications

This product is widely used in:

  • Fire-fighting water storage systems
  • Residential and commercial buildings
  • Hospitals and schools
  • Industrial process water systems
  • Agricultural irrigation systems
  • Remote and rural water supply projects

What Customers Care About?

We cooperate with leading Chinese steel manufacturer TISCO (Taiyuan Iron & Steel Group) to ensure raw material quality. The tank is made of high-strength hot-dip galvanized steel with excellent toughness, structural strength, and corrosion resistance, ensuring quality from the source.

To maintain price competitiveness, we have established long-term strategic cooperation with raw material suppliers, enabling stable and cost-effective procurement. In addition, we maintain sufficient material inventory to reduce price fluctuations.

Our factory adopts semi-automated production lines, significantly reducing labor costs. Located in Linyi, China – the logistics capital, we also benefit from efficient and cost-effective transportation.

Compared with stainless steel welded tanks, our bolted modular water tank does not require on-site welding. It is easy to install, requires lower technical skills, and allows flexible expansion and convenient transportation. It is widely used in fire protection systems, potable water storage, industrial water systems, agricultural irrigation, and commercial building water supply systems.

We also provide on-site installation guidance and remote technical support, solving installation difficulties for customers without experience or engineering teams.

Material

Q235

Grade

Food Grade

Origin

China

Color

Nickel white

Panel Size

0.5*0.5m, 1.22*1.22m, 1*0.5m, 1*1m

Certification

ISO3834, ISO9001

HS Code

730990

Capacity

1000Litres -Infinity

Foundation

Concrete Foundation, U-Steel Bottom Bas

Installation

Sitting Type

Production Capacity

2000Ton/Month

Transport Package

Pallet Box, Plywood Pallet, Steel Frame

Sample

Provided

After-Sale Service

Online Technical Support

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Professional Design Capability

Modular Water Tank CAD Drawings, Square Steel Water Tank Design & Installation Details
Modular Water Tank CAD Drawings & Square Steel Water Tank Design
Square Water Tank Panel Specifications & Dimensions

Packing & Shipping

  • The products are packaged using iron frames or plywood boxes to ensure they are not damaged during land transportation and shipping.
  • Each individual package is covered with a waterproof film to prevent exposure to moisture during long-term sea transportation.
  • Accurately label all panels and accessories to facilitate quick installation by customers.
Water Tank Panel Packaging 1
Plywood Box

Water Tank Panel Packaging 1
Plywood Box

Water Tank Panel Packaging 2 Steel Frame Support

Water Tank Panel Packaging 2
Steel Frame Support

Hot-Dip Galvanized Water Tank Export Packaging

Water Tank Panel Packaging 3
HDG

FRP Water Tank Export Packaging

Water Tank Panel Packaging 4
GRP/FRP

Large Components Loose Packing

Large Components
Loose Packing

Small Accessories Packaging Plywood Box

Small Accessories Packaging
Plywood Box

Full Container Shipment Steel Frame Packaging

Full Container Shipment
Steel Frame Packaging

Full container or large accessories Nude packing

Full Container Shipment
Simple Packaging

Qualification & Certification

Our water tank products are designed and manufactured in strict accordance with domestic and international standards and have passed multiple industry-recognized certifications, including ISO 9001 Quality Management System certification, food-grade stainless steel material standards (SUS304 / SUS316), and drinking water safety-related certifications.

ISO 9001 Certification
SGS Material Content testing report
WRAS certificate
Stainless Steel Water Tank Panel Inspection Report

Delivery

  • For standard water tank less than 200m3, it would be 3-5 days;
  • For non-standard water tank and customized water tank according to client’s specific requirements, it would be 7 to 15 days.
  • The final delivery time shall be subject to the actual order confirmation.

The product information provided above may not be detailed or accurate enough. Please refer to actual communication for specific details. You are welcome to contact us!