具体请参考德国标准:EN 12476 Phosphate conversion coatings of metals0 `( |! ~, t/ i% C
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Designation of a zinc phosphate type coating (Znph) applied to ferrous metal (Fe) to give corrosion protection ® at a mass per unit area of 3g/m2 ± 0.9 g/m2 (3) and for which the after-treatments are sealing (T2) and painting (T1)/ W1 k% D% L5 c8 u; P" g& I Phosphate conversion coating EN 12476-Fe/Znph/r/T2/T14 f2 c5 A% H! g2 t