All Shot Blasting & Grit Blasting

Places » Surface Treatment & Finishing » Shot Blasting & Grit Blasting
 
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Shot Blasting & Grit Blasting Services UK

Shot blasting and grit blasting are abrasive surface preparation processes that clean, descale, deburr, and profile metal surfaces by propelling abrasive media at high velocity against the workpiece. These processes are essential steps in many manufacturing workflows, preparing surfaces for coating adhesion, removing mill scale and rust from raw steel, deburring machined and fabricated components, and shot peening to improve fatigue life.

This category lists UK shot blasting and grit blasting companies who provide abrasive blasting services on a subcontract basis.

Processes and Media

Shot blasting uses centrifugal wheel machines to propel steel shot or steel grit at the workpiece surface. It is the most productive blasting method for high-throughput applications and is widely used for descaling structural steelwork, cleaning castings and forgings, and preparing fabrications for painting or galvanising. Automated conveyor, tumble, spinner hanger, and table-type blast machines enable consistent, repeatable surface preparation.

Grit blasting (also called sand blasting, though sand is no longer used due to silicosis risk) uses compressed air to propel abrasive media against the workpiece surface. Media types include aluminium oxide (aggressive cutting for paint stripping and heavy rust removal), glass bead (gentle cleaning and peening with a satin finish), garnet, plastic media (paint stripping without damaging substrate), stainless steel shot (for stainless and non-ferrous work to avoid contamination), and walnut shell or corn cob (gentle cleaning of delicate components). The choice of media determines the surface finish profile and cleanliness standard achieved.

Standards

Surface preparation standards define the required cleanliness and surface profile for subsequent coating processes. The most widely referenced standards are ISO 8501 (visual cleanliness grades Sa 1 to Sa 3, where Sa 2.5 is the most commonly specified grade for structural steelwork painting) and SSPC/NACE standards used in oil and gas and marine applications. Surface profile (anchor pattern) is typically measured using Testex replica tape or stylus instruments and specified in microns to suit the coating system being applied.

Find UK shot blasting and grit blasting companies in this directory by component size capability, media type, cleanliness standards achieved, and throughput capacity.