Mikrometer-Oberflächenprofil
definition
Micron surface profile, also called surface roughness, is the average peak to valley depth created on a steel surface during blasting. It is measured in microns (µm) and determines how well a protective coating can adhere to the substrate.
Where is surface profile important?
Surface roughness in microns is required whenever steel is prepared for coatings in:
- Oil & Gas – pipelines, storage tanks, offshore platforms.
- Petrochemical & Chemical industry – reactors, vessels and process piping.
- Marine & Offshore wind – ship hulls, decks and substations.
- Infrastructure – bridges, cranes and steel constructions.
For you as an asset owner or inspector, specifying the correct micron profile is crucial: too low and coatings won’t bond; too high and the profile traps air or reduces coating life.
Extra explanation and standards
Typical profile ranges depend on coating type:
- 50–70 µm – thin-film coatings and primers.
- 75–100 µm – epoxy and polyurethane protective systems.
- 100–125 µm – heavy-duty coatings for offshore and marine.
Standards:
- ISO 8503-1 – defines methods to measure surface roughness.
- ASTM D4417 – US standard for surface profile measurement.
- NACE RP0287 – guidance for profile ranges by coating system.
Pinovo and micron surface profile
Pinovo’s dust-free blasting technology achieves consistent micron profiles, while ensuring:
- Compliance with coating specifications.
- Stable adhesion performance without over-blasting.
- Dust-free environment for operator safety and coating quality.
- Repeatable results across large surfaces and complex geometries.