Extra-long steel components – including parts for steel structure factories, bridges, H-beams, steel plates and structural profiles – are almost exclusively processed by roller conveyor shot blasting machines. As core equipment in steel processing plants, these machines enable continuous inline operations, perfectly suited for mass production.
The machines adopt a roller conveying system to move workpieces. Steel plates and structural profiles travel at a constant speed through an enclosed blasting chamber. Multiple blasting turbines arranged around the chamber eject steel abrasives from all directions, simultaneously removing rust and mill scale while strengthening the top, bottom and side surfaces of the workpieces. The system integrates seamlessly with upstream and downstream production lines, eliminating manual handling and enabling fully automated, high-efficiency operation, ideal for processing large batches of plates and profiles.
After blasting, all mill scale and rust are thoroughly stripped, leaving a surface with standardized roughness. This greatly improves coating adhesion in subsequent painting or anti-corrosion treatment processes, effectively preventing re-rusting and coating peeling, thus extending the service life of buildings and bridges.
The equipment can be customized in terms of roller spacing and number of blasting turbines according to workpiece dimensions. Smaller units are used for narrow profiles, while high-power multi-turbine models are selected for wide, thick steel plates and large H-beams. Conveying speed requires precise control during operation: excessive speed leads to incomplete cleaning, while overly slow speed cuts production output. At present, large-scale steel structure manufacturers across China deploy roller conveyor shot blasting machines as their primary surface treatment equipment.
