Manual shot blasting is a metal surface preparation process carried out by skilled operators using the controlled projection of steel shot. It provides precise control over the level of surface cleaning, blasting intensity and coverage, making it particularly suitable for components with complex geometries. This method is essential for processing large fabrications, irregularly shaped components, hard-to-reach areas, or where a specific surface finish is required prior to thermal metal spraying, industrial coating or other anti-corrosion systems.

At METALIZAREAL, this process is carried out in a dedicated blast room equipped with a dust extraction system and a fully integrated steel shot recovery system, ensuring efficiency, safety and sustainable operation. The main features of the facility include:

– Blast room dimensions: 25.00 m (length) × 10.00 m (width) × 6.00 m (height)

– Simultaneous operation: capacity for 4 blasting operators working at the same time, ensuring high productivity

– Assisted manual blasting system: full control over blasting direction and intensity, ideal for complex components

– Industrial dust extraction: continuous removal of dust to maintain excellent visibility, high air quality and operator safety

– Steel shot recovery and recycling system: automatic collection, separation and reuse of the abrasive media, reducing operating costs and environmental impact

– Enhanced lighting and reinforced internal lining: ensuring safety, durability and consistent process performance

Manual shot blasting can achieve surface cleanliness grades equivalent to Sa 2½ or Sa 3, in accordance with ISO 8501-1, depending on the project requirements. The combination of experienced operators and advanced blast room technology ensures a uniform finish by removing rust, mill scale, old coatings and other contaminants, leaving the surface ideally prepared for long-lasting protective coatings.

This process is particularly suitable for large steel structures, industrial equipment, storage tanks, pipework, components with complex geometries, and workpieces requiring localised treatment or a specialised surface finish.