IS 9954 : 1981 Pictorial Surface Preparation Standards for Painting of Steel Surfaces

1 Scope

1.1 This standard specifies four different grades of rust (A, B,C and D). developed on the surface of steel, and recommendspreparation of these rust grades to either two grades of surfacepreparation (St 2 and St 3) when scraping and wire brushing isemployed or four grades of surface preparation (Sa 1, Sa 2, Sa2¹/₂ and Sa 3) when blast cleaning is employed.

1.1.1 The recommended rust and preparation grades are defined bycolour prints representing a full scale view of part of thesurface.

Note - The cleaning techniques to be adopted for achieving thedifferent grades of surface preparation has been covered in IS 1477: Part I : 1971.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 1477 : Part I :1971 Code of practice for painting of ferrousmetalsin buildings:Part I Pretreatment