Flat Bottom Silos

CTS Makina manufacture bulk material storages with a guarantee for longer lifetime more than our competitors, high technologic manufacturing place with maximum strength.

Our customer requirements are satisfied with silos from 5m³ to 25.000m³ volumes.

The manufacturing of silos is done by channeled galvanized steel with 600g/m2 coating and ZM250g/m2.
Shell plates and supports are designed to equal distribution of the silos weight. Also designs are done in consideration of climate and earthquake and statical calculations are checked carefully. All calculations are done with ANSI – ASAE EP 433 2033 or EUROCODE EN – 1991-4 norms or if needed by the customer, other norms can be applied.

In static calculations, density is fixed 830 kg/m3(52 Ibr/cu.ft). The roof is manufactured with 30° grade by high strength curled roof panels according to ASTM-653 standard. Entrance of silo is perfectly designed by having advantages of entering or quitting the silo.

Silo Components

Inspection Door

To inspection the content and condition of the grain and treatments.

Cylindrical Body

Made up of bodysheets and stiffeners, manufactured in structural steel S 350 GD Z600 hot dip galvanized.

Wind Rings

Are provided in order to resist the wind forces and to prevent deformation of the silo. The quality of the rings is E-220 Z275 MAC (EN 10305-3:2011)

Buttyl Rubber Compound

It is supplied in a preformed way to ensure optimal sealing.

Roof Ladder

Roof scale with angular rungs facilitating the path between the inspection door and the centre collar.

Access Door

Placed in the second ring to access to the interior of the silo. We provide two different sizes: 600x700mm, and 530x700mm.


Quality 8.8 and 10.9. Nuts provided are quality 8, and neoprene EPDM washers guarantee sealing. Supplied bolting is hot dip galvanized with (70 – 85 microns), ensuring higher service life more than other suppliers do.

30º Degrees Roof

composed by trapezoidal sectors. The special geometry of the wave of the roof and longitudinal folds gives high strength and stiffness. Depending on silo diameter, and roof loads, roof can be supplied with our without structure.