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Product Advantages

1. Professional Anti-Leakage Structure

Our tanks feature a reinforced structural design that balances internal water pressure and external soil load. All welds are continuous, tight and pressure-tested to eliminate leakage risk. The fully sealed structure prevents water loss and groundwater contamination, ensuring reliable long-term buried performance.

2. Dual-Layer Corrosion Resistance

Constructed from food-grade 304/316L stainless steel, our tanks add an internal food-grade resin coating for extra protection. This dual-layer system effectively resists acids, alkalis, salts and other corrosive agents found in soil, greatly extending service life even in harsh underground environments.

3. Pressure & Load Resistance

The tank exterior is reinforced with heavy-duty galvanized steel plates for superior strength and rigidity. It safely supports deep burial, heavy soil cover and surface loads without deformation or damage.

4. Fully Concealed & Space-Saving

Buried installation keeps the tank completely out of sight, preserving valuable ground space and maintaining site aesthetics. Perfect for urban areas, residential communities, factories, commercial buildings and crowded facilities.

5. Full Customization Available

We provide complete custom design including capacity, dimensions, shape and plate thickness. Our engineering team optimizes every tank based on burial depth, load requirements and water demand to deliver the most reliable and cost-effective solution.

The drawings we design for our clients

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Technical Specifications

Parameter	Description
Material	304 / 316L Stainless Steel
Structure	BDF buried tank design
Welding	High-strength full welding
Capacity	1m³ up to unlimited (customizable)
Plate Thickness	2.0mm – 4.4mm
Operating Temperature	-40°C to 99°C
Sealing System	Full welded sealing + anti-leakage structure

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Core Selling Points

• High compressive strength: withstands soil pressure and ground loads

• Proven anti-leakage design: stable structure and tight welded seams

• Excellent corrosion resistance: reliable long-term underground performance

• Hygienic & safe: food-grade material for clean water storage

• Fully customizable: capacity, thickness and shape tailored to your needs

• Low maintenance: simple upkeep for long service life

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Typical Applications

Underground Domestic Water Storage

Widely used for buried drinking water and backup water storage in residential areas, communities, towns and rural sites.

Industrial Underground Water Storage

Ideal for factories and manufacturing facilities storing process water, cooling water and emergency backup water underground.

Fire Protection Water Reservoirs

Preferred buried solution for fire water storage in industrial parks, commercial buildings, logistics centers and public facilities.

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Installation & Maintenance

Professional Installation Service

We use our in-house installation team with extensive experience in buried tank projects. Proper installation directly impacts durability and safety, so professional installation is strongly recommended.

Stable & Reliable Structure

The external galvanized steel layer provides strong structural support. We calculate burial depth and reinforcement to ensure full resistance to soil pressure and deformation.

Simple Maintenance

Underground tanks require only regular internal cleaning and inspection. Basic maintenance ensures safe, stable and long-lasting operation.

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Parts & Additional Services

Standard Parts

Valves, support frames, manhole covers, pipe connections, inlet & outlet fittings

Professional Services

• Detailed construction and installation drawings

• Custom engineering based on site conditions, burial depth and load

• Full technical support during installation

• On-site guidance and responsive after-sales service

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FAQ

Q1: How good is the pressure resistance of your underground water tank?

A1: Our BDF underground tanks are professionally engineered to safely handle burial pressure and surface loads. Pressure performance depends on burial depth, internal reinforcement and plate thickness, all designed strictly to international safety standards.

Q2: Will the tank rust underground?

A2: No. Built with 304/316L stainless steel and protected by an internal food-grade resin coating, our tanks resist soil corrosion. With regular cleaning, rust will not occur.

Q3: Is installation complicated?

A3: Installation requires professional experience, but our dedicated team has completed numerous buried projects to ensure safe and efficient setup. We also provide full technical guidance if you use your own installers.

Q4: Can you customize capacity and shape?

A4: Absolutely. We offer full customization of capacity, dimensions, shape and structure based on your site layout, burial depth and water demand.

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Customer Case