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The comparators to assess surface roughness by visotactile method (sight and touch).
|Effective and adequate preparation of a painting front surface is essential. Check the roughness or profile is essential. If the roughness is too small, the adhesion of the coating will be affected. If it is too large, the peaks may not be covered, allowing rust to settle.|
|Pickled (grit)||Blasted (shot)|
|Section profiles||25, 60, 100, 150 .mu.m||25, 40, 70, 100 microns|
|Item code||E125 ---- 1||E125 ---- 2|