Trivalent chromium passivation, hot dip galvanized passivation, environmental passivating agent, galvanized

Galvanized trivalent chromium passivation solution (DOWELL-S200) a technical specification, scope to improve the corrosion resistance of the substrate, completely free of hexavalent chromium, comply with environmental requirements for galvanized sheet GI, GA, GL, EG. Second, the product features 1, is a dark green transparent liquid. 2, density: 1.15 ± 0.05 g / cm3 3, total acid TA (100g / L, 10ml) 15.01.5 4, can be used a roll coating method, can also be squeezed spray method, after coating does not require washing. 5, direct coating, 0.3 - 0.8g / m2 coating weight, 30 - 80mg / m2 chromium content