NF T35-509-1:1997 Preparation of steel substrates before application of paints and related products. Test methods for non-metallic blast-cleaning abrasives. Part 1 : sampling.
2012NF T35-509-1:2012 Preparation of steel substrates before application of paints and related products - Test methods for non-metallic blast-cleaning abrasives - Part 1 : sampling.
1997NF T35-509-1:1997 Preparation of steel substrates before application of paints and related products. Test methods for non-metallic blast-cleaning abrasives. Part 1 : sampling.