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

Cleaning Standard A B C D
Sa 1-Brush Of Blast Not Applicable
Sa 2-Commercial Blast Not Applicable
Sa 2.5-Near white metal
Sa 3 – white metal
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