The invention relates to a copolyamide-based powder for forming a coating on a surface, having an inherent viscosity greater than or equal to 0.8 (g / 100 g) -1, in which the copolyamide has a lower melting temperature or equal to 160 ° C. The invention also relates to the use of such a powder for coating a surface, the coating having an inherent viscosity greater than or equal to 0.8 (g / 100 g) -1, as well as a coating method. of a surface by means of such a powder.
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