I/Steel surface treatment: 

1. Welded regions will be checked to confirm any imperfections that might influence the security nature of covering paint. 

2.Sharp edges will be granulated to be round, smooth. Other defective weld or slag will be treated by pounding machine or sand paper. 

3. Noncontinuous welding line will be filled again by welding. 

II/Surface readiness: 

1. Completely eliminate oil and oil out of the surface utilizing dissolvable or other appropriate techniques. 

2. Completely eliminate all "proof" of salt and impurities. 

3. Sand impact to accomplish standard SA 2.5 (surface is liberated from oil, oil and different impurities) 

4. Eliminate all the leftover during impacting by brush, squeezed air or vacuum more clean. Stay away from re-tainting brought about by garments or hand contacting. 

5. Sand impacting will be taken starting with one region then onto the next, so that cleaned regions should be rust preventive and painted preceding getting rust once more. Surface prepared for painting should be totally perfect. No oxidized or tainted is noticeable. 

6. Surface temperature is no less than 3 degrees over the dew highlight stay away from water consolidating. (Dew point is relied upon surface temperature and moistness) 

7. Regions that can't reach with impacting spout or less significant can be precisely treated with pounding machine 

III/Investigation and assessment for steel surface planning 

1. Oil and oil check 

Oil and oil look at will be conveyed a 2-3 areas for every square meter and in 40-half out of pre-arranged region, as following: 

Dribble a few drops of fuel onto really look at region. Sit tight for 10-15 seconds then, at that point adsorb the leftover fuel with a piece of channel paper. Dribble some different drops of gas onto one more piece of channel paper. Stand by and actually take a look at the two dry stains on paper by unaided eyes. On the off chance that two tones look a similar the surface is acknowledged as liberated from oil and oil. 

2. Residue check 

Residue look at will be continued entire arranged surface. Utilize a magnifier with multiple times amplification to study. No noticeable residue is alright. 

3. Cleanness check 

Residue check will be unaided eyes or a magnifier as per cleanness levels. It likewise can be checked by contrasting with standard pictures in ISO 801-1:1998 

One more technique for checking: Before surface planning, take an example that meets the cleanness of necessities. Cover the example with straightforward covering. Utilize the example as standard for control. 

Quick check: Cleanness check can be immediately led by cleaning the surface with a white get dry cotton. On the off chance that the cotton becomes grimy, the surface isn't spotless. On the off chance that the cotton becomes wet, the surface is either still wet or not liberated from oil.

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