Surfix ZN 601 / 613 / 635 Description Application: A Zinc-Calcium-Phosphate coating process. The Growel Advantage: This range of products produces smooth, microcrystalline fine-grained uniform coating. It guarantees an excellent bond between paint and base metal. Calcium modified Zinc phosphate also provides the ideal base for rubber to metal bonding (coating Wt. 200-400 mg/sq.ft., meeting IS specification 3618/1966 CLASS A/B). get a quote