Galvin (GI Sheet) are basically steel sheets which have been coated with zinc. These sheets include a range of hot dip galvanized and electrogalvanized steel sheet. It reacts with the atmosphere to provide the base steel a protection.
Spark (HR) Coils are high grade steel coils that are used for industrial applications. Hot rolled coils are manufactured by rolling steel at a temperature above the natural re crystallization temperature of steels