具体请参考德国标准:EN 12476 Phosphate conversion coatings of metals2 t' T. O9 ?3 Z# t% e4 f* M% n+ z
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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) ) M5 K8 K8 g' b! v- L* JPhosphate conversion coating EN 12476-Fe/Znph/r/T2/T19 l+ R; A$ @" I5 ]4 |) u