Quality Of Blasting
⇒ Visual Assesment Quality ISO: 8501 NACE Standard :- SA-2, SA-21/2 , SA-3.
⇒ Visual Assesment Quality ISO: 8501 SSPC Standard:- SP-6, SP-10, SP-5.
⇒ Surface Roughness Or Anchor Profile ISO: 8503 Range 20 to 150 Micron.
⇒ Surface Finishing
⇒ Surface Chlorides OR Soluble Salts ISO: 8502-6 & 9 (Bresle method) Range Below 20 mg/m2.
⇒ Dry Film Thickness Achive As Per Your Requirment For Painting Purpose.
The table below gives a summary of the different qualities in surface preparations used by some standards.
|Description||Swedish SIS 05 5900||American SSPC-SP||International ISO-8501-1|
|White Metal||Sa 3||SSPC-SP 5||Sa 3|
|Near White Metal||Sa 2 1/2||SSPC-SP10||Sa 2 1/2|
|Commercial Blast||Sa 2||SSPC-SP 6||Sa 2|
|Brush-off Blast||Sa 1||SSPC-SP 7||Sa 1|
Initial Condition Of Steels Per ISo 8501-01
|Rust Grade||Pictorial Example||Description|
|A||Steel Coveres completely with adherent mill scale and with if any rust|
|B||Steel surface which has begun to rust and from which the mill scale has begun to flake|
|C||Steel surface on which the mill scale has rusted away or from which it can be scrapped, but with little pitting visible to the naked eye|
|C||Steel surface on which the mill scale has rusted away and on which considerable pitting is visible to the naked eye|
Pictorial example of surface preparatio according to ISO 8501-01
|Sa 1-Brush Of Blast||Not Applicable|
|Sa 2-Commercial Blast||Not Applicable|
|Sa 2.5-Near white metal|
|Sa 3 – white metal|