TECHNICAL STANDARD
ISO 11124-3
Preparation of steel substrates before application of paints and related products — Specifications for metallic blast-cleaning abrasives — Part 3: High-carbon cast-steel shot and grit
ISO
Edition 2 / 2018
Current
WHAT DOES THIS STANDARD COVER?
Specifies requirements for high-carbon cast-steel shot and grit supplied for blast-cleaning.
WHY IS IT RELEVANT?
Relevant where metallic shot or grit is specified and abrasive type, grading and properties require verification as part of surface-preparation quality control. Requirements relate to abrasive supplied in the new condition.
KEY INSPECTION CONSIDERATIONS
The standard addresses requirements for high-carbon cast-steel shot and grit supplied as new metallic blast-cleaning abrasives. Different abrasive forms and grades can influence blasting behaviour and the surface produced. Abrasive selection should be considered together with the blasting process and required prepared-surface condition.
WHAT THE STANDARD SHOULD NOT BE USED TO ASSUME
Compliance with the abrasive specification does not independently demonstrate achievement of the required visual surface preparation or surface profile. Requirements applying to new abrasive should not automatically be assumed to demonstrate continuing suitability after repeated use. Abrasive condition, blasting operation and prepared-surface acceptance should be considered separately.
PRACTICAL INSPECTION APPLICATION
Inspectors can verify the specified abrasive designation and available supporting documentation and separately assess the prepared surface for visual cleanliness, surface profile and contamination requirements. Where metallic abrasive is recycled, its continuing condition and the recycling process should also be considered where applicable.
RELATED TECHNICAL STANDARDS
RELATED TECHNICAL TOPICS
Abrasives; Blast cleaning; Surface preparation
RELATED PIL GUIDANCE
Practical guidance on assessing abrasive blast-cleaned steel surface profile before protective coating application.
Laser cleaning can remove coatings and corrosion, but the resulting surface must still be inspected and verified against the proposed coating system and project requirements.
RELATED EXPERTISE
Coating Inspection; Testing & Analysis; Technical Consultancy
ABOUT THIS TECHNICAL SUMMARY
Paint Inspection Ltd provides this information to help inspectors, engineers, asset owners and contractors understand the practical relevance of commonly referenced protective coatings standards. This page is PIL technical guidance and does not reproduce or replace the published standard. Users should refer to the current published standard, project specification, coating manufacturer requirements and other applicable contract documents when establishing project requirements or acceptance criteria.
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OFFICIAL STANDARD
PIL technical summaries are intended to explain the inspection relevance of industry standards and do not replace the published document.
STATUS AND SOURCE VERIFICATION
Edition 2 remains current and was confirmed by ISO in 2024.