E. I. DuPont India P. Limited supplies Zinc Gray Powder Primer. E. I. DuPont India P. Limited products are ISO certified. Zinc Gray Powder Primer is designed as an exceptional powder primer for ferrous substrates. They offer good corrosion protection to products exposed to severe environmental conditions. It incorporates a well-known corrosion inhibitor that works by sacrificing itself to protect the metal substrate. The Zinc Gray Powder Primer is used for architectural steel, marine hardware, coil springs, outdoor furniture, and military applications.