Pressed Steel Tank

A pressed steel tank is a special storage tank made from steel plates that are mechanically pressed into shape and then bolted or welded together to form a rigid container.

These tanks are commonly used for storing water for the communities and institutions, fuel, chemicals, firefighting, storing industrial liquids among others. They can be elevated high on the ground or raised slightly above ground to allow any liquid to flow by gravity. Afritec Steel Fabricators is your reliable pressed steel tank fabricator in Kenya.

Features of pressed steel tanks

• High strength and durability
• Usually made from galvanized or coated steel to resist corrosion
• Can be assembled in sections for large-capacity storage
• Suitable for above-ground installations

Pressed steel tanks are common in water storage because they hold large volumes of water and are easier to transport and assemble than a single-piece tank.

Design & Specifications of Pressed Steel Tanks

A pressed steel tank is typically designed as a modular structure made from pressed steel panels bolted together on a steel framework. The exact design depends on the application (water, fuel, fire reserve, chemicals, etc.).

Main components of pressed steel tanks.

• Pressed steel panels — square or rectangular plates pressed with stiffening patterns for strength
• Internal and external bracing — supports tank walls against water pressure
• Base structure — concrete slab or steel support frame
• Roof cover — optional for contamination protection
• Manhole and access ladder
• Inlet, outlet, overflow, and drain connections
• Level indicators or float valves

Design and specifications of pressed steel tanks.

Panel sizes

Common panel dimensions:

• 1 m × 1 m
• 1.22 m × 1.22 m
• 1.5 m × 1.5 m

Panel thickness usually ranges from:

3 mm to 6 mm depending on tank height and pressure.

Tank Capacity

Capacity depends on dimensions:

Volume=Length×Width×Height

Example:

6 m×4 m×3 m=72 m

the tank capacity is: 72,000 litres

Materials Used in constructing a steel water tank

Common materials used in construction of a pressed steel tank are:

• Mild steel
• Hot-dip galvanized steel (HDG). This is mild steel coated with zinc to prevent to prevent. This material can safely be used for drinking water,
• Stainless steel (for potable water or chemicals). This material is used for the highest hygiene. They can be used to store drinking water and chemicals.
• Protective coatings:
• Epoxy coating
• Glass-fused coating
• Bituminous paint
• Zinc galvanization

Design considerations of pressed steel tanks

• Hydrostatic Pressure
• Water pressure increases with depth:

P=ρgh

Where:

P = pressure

ρ = fluid density

g = gravity

h = height of liquid

Pressure =ρgh

Lower panels are therefore made thicker because they experience greater pressure.

Structural Features

• Cross bracing prevents wall deformation
• Anchor bolts resist uplift and movement
• Roof supports prevent sagging
• Base must withstand full tank load

Approximate water load:

1 litre≈1 kg

So a 72,000 L tank weighs roughly 72 tonnes when full.

Common Standards of Steel water tanks

• Pressed steel tanks are often designed according to standards such as:
• American Water Works Association standards
• British Standards Institution standards
• ISO standards for welded/bolted tanks

Application of pressed steel water tanks.

• Municipal water storage and supply
• Institutional water storage
• Elevated water towers
• Fire protection systems
• Irrigation of crops
• Industrial process water
• Rainwater harvesting

Advantages of Pressed Steel Tanks

• Modular and expandable. Due to this, panels can be transported easily in areas with poor roads and difficult terrains. This makes them a better choice than plastic storage tanks.
• Strong and durable. Pressed steel tanks are more durable than plastic tanks.
• Easy transport and site assembly
• Suitable for large capacities. These tanks can store millions of water
• Long service life with proper coating
• Versatility. They can easily be installed at ground level or in an elevated position, allowing water to easily travel by gravity.

Please contact Afritec Steel Fabricators Ltd for design and fabrication of all your steel water water tanks.

What is the cost of constructing pressed steel tank in Kenya?

Generally, the cost of pressed tank in Kenya will depend on the height and the volume of water, but the cost typically start from Kes. 150,000

Raised pressed tanks