Sand Blasting Standards_ Swedish SA 1, SA 2, SA , SA 3 Vs I am also interested in the relationship between the SA standards SA 1, 2 and 3 and Ra . To check the roughness of steel surfaces which have been blast cleaned to cleanliness grades SA and SA 3 before painting. The two versions were not equal: Sa permitted stains, streaks and shadows from SP 1 is a prerequisite to the other SSPC abrasive blasting specifications.

Author: Zusar Magami
Country: Grenada
Language: English (Spanish)
Genre: Music
Published (Last): 24 July 2010
Pages: 466
PDF File Size: 15.33 Mb
ePub File Size: 7.62 Mb
ISBN: 590-9-65958-829-3
Downloads: 76582
Price: Free* [*Free Regsitration Required]
Uploader: Neramar

Surface preparation is the essential first stage treatment of a steel substrate before the application sandblasting sa 2.5 any coating, and is generally accepted as being the most important factor affecting the total success of sandblasting sa 2.5 corrosion protection system.

One reason cleanliness is required is because paint will not adhere properly to a dirty surface. Surface profile 2 – 4 mills RMS is to be obtained – Elcometer surface profile gauge to be used.


Although welded areas are inspected, the requirements for weld quality do not usually consider the requirements for coating. Ultra-high pressure water jetting sandblasting sa 2.5 an extremely versatile and sandblasting sa 2.5 method of removing sandblastijg and metal coatings, soluble salts sandblasting sa 2.5 other contaminants from steel surfaces.

The applicable cleanliness 25 is usually called for by either the protective coating manufacturer or the owner of the structure to be painted. Let us know if you seek something further.

Commercial Blast Sansblasting specifies that all tightly-adhering matter must go. Applying the recommended number of coats to achieve the required thickness, using “GRECO” airless spray guns “King Sa Simply stands for Sand as that is the abrasive medium that they used to determine the blasting standards on the 4 Rust Grades for ISO [link by ed.

Sometimes no tight correlation between SA and millimicron. Therefore, if adhesion is critical and the coating is fairly thick, 63 Ra or sandblasting sa 2.5 may be appropriate. ISO has no 22.5 specification.

Any residual contamination should be firmly adhering. Hi Ted, I said ‘Arrrgh’ so many times when reading this page. It sounds to me like you’ve simply removed any doubt sandblasting sa 2.5 the surface is clean enough to comply with Sa2. ISO is the “visual standards for cleanliness”, and this cannot be equated to surface roughness because it is a visual standard sandblasting sa 2.5 cleanliness and not sandblastkng roughness standard. What will be sandblasing acceptance criterion for shot blasting — prime or reject.

Sand Blasting &Painting

October 16, A. This public forum has 60, threads. How can we convert Sa 2. The corners of rolled sections generally do sandblasting sa 2.5 require grinding, as they are usually smooth as a result of the rolling process.

On site, thorough cleaning shortly before painting is always necessary to remove contamination accumulated over sandblasting sa 2.5 and from construction activities including dust, grout leaks from concreting, and the products sandblasting sa 2.5 blast cleaningbolting and welding.

It is not a measurement of surface profile like the waiter is talking about — and no conversion between the two is possible. What is the importance of surface preparation per SA 2. Or what grade is suitable with what condition sandblastjng structure?

Sand Blasting &Painting

But sadblasting you have a copy of Sandblasting sa 2.5, please try your best to phrase your questions in terms of what information you feel is lacking in that specification. Only dry blasting techniques are allowed.

The marginal strip should be treated as an external surface, except that only the shop coats need be applied. Any standard describes it?

The two versions were not equal: Weld spatter and residual slags should also be removed. Thanks a lot everyone.

Swedish Standard SA 2.5 shot blasting / surface prep

It comes in a hardcover A5 format that can be directly compared to the surface. Certain surface sandblasting sa 2.5 introduced during the original processing of the steel may not be detrimental to the performance of a sandblasting sa 2.5 in service, particularly for structures in relatively low risk environment categories. Knowing the standards are important for any abrasive blaster, and is a necessity 2.5 certified blasters.