具体请参考德国标准:EN 12476 Phosphate conversion coatings of metals " _0 U( Q |3 m9 K1 q 5 s# F( [ e% D7 z. l) N0 N * a3 J' U2 x. @' P9 h) X; k
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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)$ T, G2 s5 U% Z! ]4 x4 q9 e7 ~8 p Phosphate conversion coating EN 12476-Fe/Znph/r/T2/T13 x( h3 \* n1 Z1 ~, M