Shot Blasting
Surface preparation with steel shot. Surface cleaning and profiling to ISO 8501-1 Sa 2.5 cleanliness with S110–S780 shot sizes for coating preparation.
Shot blasting is a surface preparation process using steel shot to clean oxide scale, sand residue and paint remnants from cast parts, steel structures and pipe/profile surfaces. The Sa 2.5 "very thorough blast cleaning" grade defined in ISO 8501-1 is the commonly targeted cleanliness level before painting and coating.
Steel shots are produced from atomized steel, heat-treated and classified into size ranges S110–S780. S230–S330 for general cleaning, S390–S460 for heavy scale removal, S550+ for aggressive surface profiling. The process not only cleans the surface but also creates compressive residual stresses providing a "shot peening" effect that improves fatigue life.
Technical Parameters
Shot Blasting — Key technical data of the process
Equipment & Facilities
- Wheel (turbine) shot blasting machines
- Pressure air blasting cabinets
- Steel shot and grit circulation system
- Screens and separators (worn shot screening)
- Dust collection and filtration system
- Surface roughness measuring instruments (profilometer)
- Profile replica tape (Testex tape)
Quality Control Points
- Visual cleanliness assessment: ISO 8501-1 / SSPC-VIS 1
- Surface profile measurement: Ra and Rz profilometer
- Shot size distribution: sieve analysis control
- Salt contamination test (Bresle method)
- Compliance with paint/coating manufacturer specifications
- Operating mix optimization
Reference Standards
Technical Support & Quote
Shot Blasting — For detailed technical information, capacity details and custom production requests, contact our expert team.
Related Blog Posts
Technical articles, guides and industry analyses
Steel Heat Treatment Processes: Annealing, Quenching & Tempering, Normalizing Guide
A comprehensive guide to steel heat treatment processes. Parameters, suitable steel grades, and proper process selection for annealing, normalizing, quenching & tempering, and case hardening.
Hot Rolled vs Cold Drawn: Differences, Advantages, and Selection Criteria
A detailed comparison of hot rolling and cold drawing processes. A guide for selecting the right bar form in terms of surface quality, tolerance, cost, and mechanical properties.
Steel Bar Usage in the Automotive Industry and 2026 Trends
The most commonly used steel bar grades in the automotive industry and 2026 trends. The impact of electric vehicle transition, lightweighting, and sustainability requirements on material selection.