Abrasive Sand Blasting

[dtvankirk]

I was reviewing a set of bridge plans and there was a note that stated all existing steel would be "abrasive blasted to a SA-1." Any ideas on what SA-1 is referring to? Is this referring to a specification on abrasive blasting or a surface finish.

 

[JStephen]

This page shows some different blast standards including an SSI-SA1, which is shown being equivalent to brush-off blast. I don't know what the SSI stands for. I also find at least one reference to an ISO-SA1, but don't find an ISO standard by that name:

http://sweets.construction.com/mfg/25985/P37804.htm

 

[valleyboy]

I believe that this may be a reference to BS 7079, which deals with surface cleanliness of structural steelwork prior to the application of protective coating.

This link gives a brief explanation of the differing grades of finish available.

http://www.wjleigh.co.uk/images/SurfacePrepSteel.pdf

 

[boo1]

Swedish Standards. SIS O5 59 00 (1967) - “Pictorial Surface Preparation Standards for Painting Steel Surfaces”

Brush Off - Loose mill scale, loose rust and foreign particles are removed.
Simular to SSPC SP 7 or NACE No.4

http://www.wjleigh.co.uk/images/SurfacePrepSteel.pdf

http://www.waterjettingdirectory.com/article_surfaceprep.htm