Outer coating for an iron-based buried piping element, coated piping element and method for depositing the coating

作者: Gerard Nouail , Jean-Marc Pedeutour , Olivier Bondil

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摘要: The invention relates to an outer coating ( 9 ) for underground piping element 7 made from iron, in particular cast the having a first porous layer 11 and second 13 positioned on able plug pores of layer, being characterized that: includes substantially pure zinc or zine alloy pseudo-alloy, pseudo-alloy including, terms mass, at least 50% zinc, preferably between 0.5% 40% aluminum, comprises one-component paint aqueous phase one synthetic resin emulsified, dispersed dissolved water. also corresponding coated method depositing coating.

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