Category: Steel Tanks

Steel Tanks are the backbone of modern industrial, agricultural, and municipal infrastructure. Known for their unmatched structural integrity, they provide a secure, long-term solution for storing everything from potable water and food products to hazardous chemicals and fire-suppression reserves.

In the African market, Rainbow Tanks has pioneered the use of high-performance Aluzinc® steel in tank construction. By moving away from traditional heavy-welded steel and basic galvanizing, they offer a smarter, more durable bolted system that is specifically engineered to survive the continent’s harsh environmental conditions.

Primary Types of Steel Tanks

• Bolted Sectional Tanks: The “Lego” of storage. Prefabricated panels are bolted together on-site. This is the specialty of Rainbow Tanks, allowing for massive capacities (up to 5 million liters) that can be flat-packed and shipped anywhere.

• Corrugated Steel Tanks: Lightweight and cost-effective, these tanks use the geometry of the corrugation to provide strength. They are widely used in rural farming and rainwater harvesting.

• Welded Steel Tanks: Traditional tanks where steel plates are joined by welding. While permanent, they require high on-site labor and are difficult to relocate compared to bolted designs.

• Stainless Steel Tanks: The premium choice for the pharmaceutical and food industries where hygiene and zero contamination are the top priorities.

The Rainbow Tanks Engineering Edge

What sets a Rainbow Tank apart from a generic steel tank is the fusion of three core technologies:

1. Aluzinc® Coating: A 55% Aluminum and 43.4% Zinc alloy coating that provides up to 7 times the lifespan of standard galvanized steel by creating a self-healing barrier against rust.

2. Internal Liner Technology: Instead of the liquid touching the steel, it is housed in a heavy-duty, food-grade internal membrane. This eliminates internal corrosion and keeps water 100% safe for human consumption.

3. Modular Portability: Because they are bolted and not welded, these tanks can be dismantled and moved to a new location if your project needs change, making them a “liquid asset” in every sense.

Technical Performance

Critical Applications

• Fire Fighting: Fully ASIB-compliant reservoirs for commercial sprinkler systems.

• Mining & Industrial: Storage for process water and aggressive liquids in remote, high-wind, or seismic zones.

• Municipal Supply: Large-scale reservoirs used to stabilize water pressure and provide backup during “water-shedding” events.

• Agriculture: High-capacity irrigation tanks that resist UV damage and maintain water temperature through superior reflectivity.

Specialized Features

• Vermin-Proof Roofing: Fully sealed steel dome roofs keep out dust, birds, and insects.

• Heat Reflectivity: The Aluzinc surface reflects solar radiation, keeping the stored water significantly cooler than plastic or dark-painted steel tanks.

• Custom Fittings: Can be equipped with high-flow outlets, industrial ladders, and level indicators tailored to specific project requirements.

Would you like me to prepare a capacity chart to help you determine which Rainbow Tank size fits your specific site footprint?