Tubular trough screw conveyors for gentle powder and granular material handling
In the flour milling and animal feed milling industries, preserving the integrity of powdery or granular materials during transport is a critical challenge. Traditional systems often struggle with material residue and particle size conservation, leading to inefficiencies and product loss.

Efficiently convey powdery and granular materials
The CAO Tubular Trough Screw Conveyor from WAMGROUP is designed for gentle material handling with minimal residue. This modular system, made from carbon steel, comes in light-duty and medium heavy-duty versions. It features helicoid screw flighting welded on a central pipe, adjustable shaft seals, end bearing assemblies, and optional ATEX Zone 22 certification for hazardous environments. Suitable for various industries including flour and animal feed milling, it ensures the conservation of particle size and reduces material loss during handling.
Benefits
- Minimizes material residue
- Conserves particle size of materials
- Modular design for easy maintenance and matching spare parts
- Available in light and medium heavy-duty designs
- ATEX Zone 22 certification for hazardous environments