Roughness as per Sa 2 1/2

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For the preparation of CS surface I need to know the grit profile from blasting as per Sa 2-1/2 (roughness). Thank you in advance for your prompt answer.

Omar Kherici
Oil and gas project - Almaty, Kazakhstan

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September 3, 2009

what is Sa 2 1/2 regarding surface preparation. and Sa stand for what?

dushyant upadhyay
- varansi, u.p., India

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September 3, 2009

Hi, Dushyant. This is a Swedish Institute for Standards designation for "near white" blasted finish -- approximately equivalent to NACE No. 2/SSPC-SP10 [link is to spec at TechStreet] 2, and ISO 8501-1 [link is to spec at TechStreet] WA.2.5

I believe it's actually "Sa.2.5", but I don't know is "Sa" is an abbreviation or acronym in Swedish.

Please see letter 12526 for a more complete explanation.

Regards,

Ted Mooney, P.E. RET finishing.com Brick, New Jersey

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May 18, 2012

Q. For the preparation of CS surface may I know the grit profile of blasting as per Sa 2-1/2 (roughness). Thank you in advance for your prompt answer.

Darmasena Sanjaya
- Sri Lanka