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Sand blasting of steel tank

 

I need to know the technical details about the following- Surface preparation - Steel Tank ; the surface needs to be prepared by sand blasting as per Swedish Standard , SA 2.5 minimum or better as per Swedish Standard , SA 3. If it is possible then please inform about the surface finish value ( Ra, Rmax eg.) which can be achieved by the above mentioned process, and the type of sand and its grain size.

Please respond as early as possible.

Mahmoud allam
Meo - Cairo

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Sand blasting to S.A standards.SA 2.5 requires that the surface be blasted so that it is at least 80%clean with no more than 20% colour showing.SA 3 is blasted to a 100% clean surface with no shadows or colour showing. Grade of sand will depend on blast profile or surface roughness required.Fine is faster but coarse will give a higher profile.Ensure priming is done within 2/4 hours.

Hope this is of some help.

STEVE BEAUMONT
- NEW ZEALAND