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Surface treatment
Depending on the location of the project, MHB applies different surface treatments: MHB distinguishes between 2 classifications:
2 54
3 55
1: Class C3 - Medium corrosive environment* - ISO 12944-2:2018
Gritblasting SA 2.5, a 3-layer powder coating:
RAL colors
• The first layer is a 60 μm thick zinc-containing primer. • The second layer is a 60 μm thick sealing primer. • The third layer is a 60 μm thick Super Durable top coating (see MHB colour collection).
2: Class C5 - Very high corrosive environment** - ISO 12944-2:2018
Gritblasting SA 3.0, followed by thermal spraying and a 2-layer powder coating:
• The first layer is thermal spraying of a 60 μm thick zinc layer. • The second layer is a 60 μm thick sealing primer. • The third layer is a 60 μm thick Super Durable top coating (see MHB colour collection).
* Medium corrosive environment: Applicable in urban and industrial areas with moderate pollution. Production halls with high humidity and some pollution: laundries, breweries, food processing industry.
** Very high corrosive environment: Applicable in industrial areas and coastal areas with high humidity, high salinity and aggressive atmosphere. Buildings or areas with almost permanent condensation or pollution.
Dutch Masters of Steel since 1667
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