Conical Bottom Steel Silos • OBIAL & MAFAL
With 45°–65° conical angle options, high-strength steel chassis, and fast unloading advantages, these silo solutions are optimized for animal farms, feed mills, flour mills, and short-term storage operations.
Fast Emptying, Optimal Flow, and Multi-Purpose Storage.
Conical-bottom silos provide high efficiency in storing mineral feed, soy, corn, wheat, pellets, granules, sawdust, seeds, crushed grains, and low-flow products. With conical angle options of 45°–65°, they are custom-designed to meet the flow characteristics of the product.
Fast and Complete Emptying
The conical base design allows the product to flow naturally under its own weight; this shortens unloading time and minimizes product breakage.
Durable Steel Chassis
The high-strength steel chassis safely supports the silo weight and product pressure, creating a long-lasting and highly stable structure.
Multipurpose Use
It is the ideal solution for livestock farms, feed mills, flour mills, small facilities, and temporary storage operations.
Galvanized/Magnetic Coating
OBIAL silos use galvanized steel; MAFAL models use Magnelis ZM310 sheet metal for superior corrosion resistance.
Areas of Application
The conical base is manufactured at the appropriate angle according to the product's flow characteristics and offers a wide range of applications across various sectors.
Animal Farms
Pellet feed enables rapid unloading of products such as corn, soy, and compound feed.
Feed and Flour Mills
It offers the ideal solution for transferring raw materials to high-speed feeding lines.
Seed & Temporary Storage
It ensures optimum flow and minimal product breakage for short-term or seasonal storage.
Structural Design and Conical Base Engineering
Conical-bottom silos are custom-designed for each project based on flow analysis, product density, moisture content, and operating conditions.
Conical Base Angle (45°–65°)
- 45° – ideal for fluid products.
- 55° – medium-density cereals
- 60°–65° – for products exhibiting high adhesion and being difficult to flow.
Carrier Steel Chassis
- High voltage resistant steel profiles
- Static design suitable for wind and earthquake conditions.
- Long-lasting hot-dip galvanizing coating.
Vertical Crossbar Supports
- Strong bracing system supporting the side wall panels.
- It improves shell stability by distributing product pressure evenly.
OBIAL & MAFAL Conical Bottom Silos
We offer modular, reliable, and long-lasting solutions under two brands, tailored to different market requirements.
OBIAL Conical Bottom Silos
- Diameter range: 2.11 m – 10.83 m
- Conical base angle: 45°–65°
- Galvanized steel side wall sheet and cross supports.
- Ideal for facilities requiring short-term storage and rapid turnover.
MAFAL Conical Bottom Silos
- Diameter range: 2.11 m – 10.83 m
- Capacity: 5 tons – 1,600 tons
- Magnelis ZM310 sidewall sheet metal & high-strength steel chassis
- High performance in feed, flour and seed processing plants.
Material Quality and Coating Technologies
The most critical factors determining the lifespan of conical-bottom silos are the quality of the steel used, the surface coating, and the strength of the connection equipment.
Galvanized Coating (OBIAL)
- High-strength galvanized steel
- Long lifespan against corrosion.
- Highly durable surface protection for outdoor environments.
Magnelis ZM310 (MAFAL)
- Superior anti-corrosion with 310 g/m² Magnelis coating.
- Maximum performance in corrosive environments and aggressive climatic conditions.
- Long-lasting surface protection
Safety, Accessibility, and Maintenance Design
Silo interior and exterior access, safety cages, ladders, platforms, and maintenance points are designed in accordance with international standards.
Safety Ladders
The internal stair system provides safe access from the exterior, including a safety cage ladder, to the roof.
Entrance Doors
With options for round doors in narrow diameters and rectangular doors in wide diameters, the design is suitable for every purpose.
Rooftop and Observation
Even when the silo is fully loaded, safe access to the inside is possible thanks to the inspection hatch on the roof.
Gallery
The exterior design of conical-based steel silos is enhanced with sample images of the conical base frame structure, entrance doors, and stair systems.
Frequently Asked Questions
The flow characteristics of the product to be stored (density, moisture, granule size, coefficient of friction) are taken into consideration. Through flow analysis, the correct conical angle between 45°, 55°, or 60°–65° is selected.
The advantages include high product unloading speed, low risk of clogging, and minimal product breakage. Additionally, the robust chassis structure facilitates easy installation.
OBIAL models use galvanized steel, while MAFAL models are manufactured with Magnelis ZM310 coating, offering a much longer lifespan against corrosion.