What are the features of underground water tanks?

Underground water tanks are modern water storage facilities widely used in urban construction, fire protection systems, agricultural irrigation, and residential water supply.

They are known for saving space, being aesthetically pleasing, durable, and reliable, making them an indispensable water storage solution for urban and industrial projects.

1️⃣ Features and Design Advantages

Space-saving: Installed underground, they do not occupy surface or indoor/outdoor building space, making them ideal for cities with limited land resources.
Aesthetic design: Concealed installation does not affect building appearance or cityscape.
Reliable sealing: Full bolted connections and on-site assembly ensure leak-proof performance.
Anti-floating and pressure-resistant: Internal rods or support structures can withstand high water pressure and underground water forces.
Easy maintenance: Designed for easy cleaning and inspection, reducing long-term maintenance costs.

Scientific Design and Installation:

During design and installation, it is essential to consider the buried depth and soil cover thickness to properly calculate the quantity and thickness of internal support materials, ensuring structural stability and durability.
Since underground tanks are more difficult to access, pump rooms, inspection holes, vent pipes, and overflow outlets should be planned in advance to facilitate future maintenance.
The exterior of the tank is in prolonged contact with soil. Protective materials can be used during burial to prevent corrosion caused by scratches to the anti-corrosion coating, extending the tank’s service life.
Underground water tanks use modular assembly, ideal for irrigation & rainwater harvesting, durable, space-saving, and recommended depth ≤3m.

2️⃣ Material Characteristics

Stainless Steel (SUS304/SUS316): High strength, corrosion-resistant, pressure-resistant, suitable for fire protection and industrial water storage.
Hot-dip Galvanized Steel + Anti-corrosion Coating: Suitable for large-capacity water storage, weather-resistant, and cost-effective.

3️⃣ Application Scenarios

Urban buildings and residential complexes: Storage for domestic water supply.
Fire protection systems: Ensuring water supply for building and urban fire safety.
Industrial and factory use: Storage of production or circulating water.
Agricultural irrigation: Storage for farmland or greenhouse water supply, improving irrigation efficiency.
Commercial facilities: Water storage for hotels, hospitals, schools, and other commercial buildings.