TECHNICAL STANDARD
ISO 11126-4
Preparation of steel substrates before application of paints and related products — Specifications for non-metallic blast-cleaning abrasives — Part 4: Coal furnace slag
ISO
Edition 2 / 2018
Current
WHAT DOES THIS STANDARD COVER?
Specifies requirements for coal furnace slag supplied as a non-metallic abrasive for blast-cleaning.
WHY IS IT RELEVANT?
Relevant where coal furnace slag is specified and abrasive properties form part of surface-preparation inspection or quality control. Requirements relate to abrasive supplied in the new condition.
KEY INSPECTION CONSIDERATIONS
The standard addresses requirements for coal furnace slag supplied as a new non-metallic blast-cleaning abrasive. Abrasive grading, physical characteristics and potential soluble contamination can be relevant to blasting performance and prepared-surface quality. The abrasive should be considered in its supplied condition and in relation to the required blasting process and prepared surface.
WHAT THE STANDARD SHOULD NOT BE USED TO ASSUME
Compliance of the abrasive with its specification does not itself demonstrate that the prepared steel has achieved the required visual cleanliness, surface profile or surface salt condition. Requirements applying to new abrasive should not automatically be assumed to describe abrasive condition after contaminated storage, handling or use.
PRACTICAL INSPECTION APPLICATION
Inspectors can review abrasive identification, supporting documentation and storage condition and consider specified abrasive tests where required. The resulting prepared surface should then be inspected independently against the project's visual cleanliness, surface profile and contamination requirements.
RELATED TECHNICAL STANDARDS
RELATED TECHNICAL TOPICS
Abrasives; Coal furnace slag; Blast cleaning
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.