1. Based on Material
Steel Tanks: Durable and resistant to high pressure, commonly used for petroleum, chemicals, and water storage.
Fiberglass (FRP) Tanks: Lightweight, corrosion-resistant, ideal for storing chemicals and potable water.
Polyethylene (Plastic) Tanks: Cost-effective and corrosion-proof, often used for water, fertilizers, and mild chemicals.
Concrete Tanks: Used for large-scale water storage, wastewater treatment, and fire protection systems.
2. Based on Design
Above-Ground Storage Tanks (ASTs): Easily accessible for inspection and maintenance, commonly used for fuel and industrial liquids.
Underground Storage Tanks (USTs): Save space and reduce environmental exposure, typically used for gasoline and hazardous liquids.
Floating Roof Tanks: Minimize vapor loss in large oil and fuel storage applications.
Fixed Roof Tanks: Used for non-volatile liquids like water and certain chemicals.
3. Based on Purpose
Industrial Storage Tanks: Store chemicals, petroleum, and other industrial liquids.
Water Storage Tanks: Hold potable water, rainwater, or wastewater.
Cryogenic Tanks: Store liquefied gases like nitrogen, oxygen, and LNG at extremely low temperatures.
Pressure Vessels: Designed to hold gases or liquids under high pressure.






