Welded seams, spot welding repairs, rivet holes, signs and signposts, pipes, roofs. Transformers, transmission towers, earth pegs. Water tanks, tank stands, fences, gates, animal raceways in milking sheds and yards, farm implements and tractor draw bars, metal junction, terminal boxes, pump equipment, corrugated metal buildings. Shackles, winches, draw bars, subframes, wheel and guards. Inner door panels, tow bars, exhaust tail pipes and wheel protection under hub caps. For galvanised products which have been cut, drilled or welded. On iron railings, roofing and spouting, gutters, plumbing, ducting, radio and TV aerials, outdoor fixtures, hinges, fences and gates, wrought iron, air conditioning and refrigeration units. Equipment and machinery, machine housings. Bridges, guard rails, lamp stands. Wherever galvanising requires repair or bare steel or iron needs protection. Not effective when used on non-ferrous metals.