Factory groundwater storage tank installation completed

GSC/BDF underground water tank

The underground water tank is made from a bimetallic composite plate using a single stamping and stretching process. This design ensures the safety and hygiene of the water.

The galvanized sheet provides the tank’s strength, and with no welded joints in contact with the water, it effectively prevents corrosion.

Key Points Tag :

Customizable

15 years of experience

Original Manufacturer

Full product range

Shipping/Land transport

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About Us

High-Quality Large Underground Water Tank Pressed Steel Sectional Modular

The GSC Modular Water Tank is a galvanized and stainless steel composite water tank, constructed using three types of premium materials. The inner layer consists of high-quality stainless steel, while the outer layer features hot-dip galvanized steel, with a high-modulus material sandwiched in between.

This composite plate is formed through high-pressure and high-temperature processes, resulting in a durable and efficient water tank solution. The combination of stainless steel and galvanized steel ensures excellent performance for storing potable water.

The GSC modular water tank is suitable for both above-ground and underground installation, making it ideal for rainwater collection. Its underground application effectively addresses space limitations, providing a practical solution for areas with tight land availability.

Applications of GSC Water Tanks:

Water storage (rainwater, seawater, irrigation, water treatment)
National, provincial, and state parks
Construction and fire-fighting water supply
Water circulation systems
Agricultural feeding operations
Fishing and shrimp tanks
Temporary water storage for heating system expansions
Widely used across industries, mining, public institutions, restaurants, reclaimed water disposal, fire control, and various other facilities.

These tanks are versatile, durable, and efficient, making them suitable for a wide range of uses in various sectors.

Water Tank Structure

Panels (including bottom panel, wall panels, roof panel, and manhole cover);
Internal Components (including internal ladder, tie rods, supports, flanges, and rubber seals);
External Components (including external ladder, angle iron, tie plates, bolts, and nuts);
U-steel Base (surface treatment options include paint, hot-dip galvanization, or stainless steel).

Tank Height and Panel Thickness Design Reference

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

Accessories

Bolt nut & washers stainless steel 304 material.
The combination of Ethylene Vinyl Acetate (EVA) and natural rubber sealant tape.
Covers the tank cover shall be constructed from 3mm to 5mm of thickness steel 304 material according to the requirement.
Ladders and Level Indicator. Internal & external ladder shall be made of stainless steel grade 304 material.

Instructions

Only hold water for life or fire water. Not hold hydrochloric acid,
sulfuricacid,acid or alkaline liquid.
The water tank regular cleaning and disinfection 1-2 times a year.

Product Name	GSC underground water tank
Material	Q235, SUS201, SUS304, SUS316
Grade	Food Grade
Origin	China
Panel Size	0.50.5m, 10.5m, 11m, 21m
Panel thickness	From 5mm to 24mm
Certification	ISO3834, ISO9001
HS Code	730990
Capacity	1000Litres -Infinity
Foundation	Concrete Foundation, U-Steel Bottom Bas
Installation	Sitting Type, Welding
Production Capacity	2000Ton/Month
Transport Package	Pallet Box, Plywood Pallet, Steel Frame
Sample	Provided
After-Sale Service	Online Technical Support

1 review for GSC/BDF underground water tank

Rated 5 out of 5

Judy – 2026-03-12

We installed this tank for a commercial project and it performs very well. Solid structure and good finishing. Reliable supplier.

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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 2
Steel Frame Support

Hot-Dip Galvanized Water Tank Export Packaging

Water Tank Panel Packaging 3
HDG

Water Tank Panel Packaging 4
GRP/FRP

Large Components
Loose Packing

Small Accessories Packaging
Plywood Box

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.

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！