Surfix Zn 602 / 603 / 617 / 620 / 625 Description Application: A set of products for producing heavy Zinc coatings. The Growel Advantage: They are ideal for metal forming applications such as tube drawing, wire drawing, and cold heading. They are also recommended for corrosion protection of fasteners with rust preventive oil. (Coating Wt. 750-2000 mg/sq.ft. meeting IS specification 3618/1966 CLASS A.) get a quote