Surface Preparation for Structural Steel

Dear Readers,

Effective life of coating of anti-corrosive paint applied to a steel surface is to a very large extent dependent on how thoroughly the surface has been prepared prior to painting.

 

Removing contamination and increasing surface roughness will allow maximum bond strength and adhesion to develop between coating and substrate. If the coating is applied to a well prepared substrate, they will have strong adhesion to that substrate and may be able to withstand these condition.

 

Coating performance is directly related to the quality of surface preparation.

 

Method of Surface Preparation 

1.       High Pressure Fresh Water Washing

2.       Solvent Cleaning or Degreasing

3.       Manual methods of Surface Preparation

4.       Power tool Methods of Surface Preparation

5.       Dry Abrasive Blasting

6.       Rotary or Wheelabrator blasting

7.       Slurry Blasting

8.       Hydro blasting

Blasting Standards

1.       ISO Standard (8501-1)

2.       Swedish Standards ( SIS 05 59 00)

3.       Steel Structure Painting Council Standards (SSPC-SP)

4.       British Standards Institution (BS4232)

5.       NACE Standards (National Association of Corrosion Engineers)

6.       JSRA Standards (Shipbuilding Research Association of Japan)

7.       Major Local Shipyard Standards