Studbolts - Hot-Dip Galvanized - hex bolt

Sheradising

Sheradising, Also known as sherard zinc plating, this is one of the methods for applying a zinc coating to fastening materials to give them corrosion protection. The products that are to be sherardised are placed in a steel barrel together with a prescribed quantity of zinc dust. The barrel is rotated slowly and placed in an oven set to a temperature of approximately 420° C. During the treatment, a 15 – 25 µm thick zinc-iron alloy layer is formed that possesses an excellent corrosion resistance.