Shot Blasting Machine for Structural Steel Surface Preparation

Project Background

A structural steel fabrication company in Southeast Asia specializes in manufacturing steel beams, columns, and welded components for industrial buildings and infrastructure projects. With increasing export orders and stricter surface treatment standards, the customer required a reliable shot blasting solution to improve surface cleanliness, coating adhesion, and overall production efficiency.

The key challenge was to achieve Sa 2.5 surface cleanliness consistently on large steel profiles while minimizing manual labor and operational costs.

Customer Requirements

• Efficient removal of rust, mill scale, and welding slag

• Uniform surface roughness for improved paint and coating adhesion

• Capability to handle large and heavy steel structures

• Stable performance for continuous industrial operation

• Low maintenance cost and easy spare parts replacement

Solution: Roller Conveyor Shot Blasting Machine

After evaluating the production requirements, we supplied a Roller Conveyor Shot Blasting Machine, customized for long steel profiles and heavy-duty components.

Key features of the solution include:

• High-efficiency blast wheels for deep and uniform surface cleaning

• Wear-resistant manganese steel liners for extended machine lifespan

• Automatic abrasive circulation and dust collection system

• Adjustable blasting speed to match different steel dimensions

• PLC control system for stable and user-friendly operation

The machine was tailored to process steel beams up to 12 meters in length, ensuring smooth material flow and consistent blasting quality.

Implementation & Operation

Installation and commissioning were completed within two weeks. After operator training, the customer integrated the shot blasting machine into their existing production line.

Once operational, the machine significantly reduced manual grinding and cleaning time. Steel surfaces achieved a uniform metallic finish, meeting international coating standards before painting or galvanizing.

Results & Benefits

• Productivity increased by over 35% compared to manual surface treatment

• Surface cleanliness consistently reached Sa 2.5 standard

• Improved coating adhesion, reducing repainting and rework

• Lower labor costs and improved workplace safety

• Stable performance with minimal downtime

The customer reported improved production capacity and higher acceptance rates from overseas buyers.

Application Scope

This shot blasting solution is widely used for:

• Structural steel and H-beams

• Steel plates and welded assemblies

• Bridge components and industrial frames

• Shipbuilding and offshore steel structures

Conclusion

By adopting a customized Shot Blasting Machine, the customer successfully upgraded their surface preparation process, improved product quality, and enhanced competitiveness in international markets.

For manufacturers seeking reliable surface treatment solutions, shot blasting machines provide an efficient, cost-effective, and scalable option for industrial steel processing.