Hot dip galvanised strip products (G.I. STRIPS)
- Hot dip galvanising is primarily an industrial protective coating process designed to provide a tough and durable protective coating for steel that will generally outlast the design life of the structure to which it is applied.
- G.I. Strips are the items coated with a thin layer of zinc for corrosion resistance. Usually Galvanised Strips shaped into straight parallel ridges and hollows.
- Galvanised strips are widely used in applications where rust resistance is needed.
- Galvanised strips can be welded; however, one must exercise caution around the resulting zinc fumes.
Mild Steel as per IS 2062
- 25 x 3 / 4 / 5 / 6mm
- 30 x 3 / 4 / 5 / 6 / 8mm
- 32 x 3 / 4 / 5 / 6 / 8 / 10mm
- 37 x 9mm
- 40 x 5 / 6 / 8 / 10 / 12 / 16 / 20 / 25mm
- 421/2 x 14 / 15 / 16mm
- 44 x 8 / 9 / 10 / 11 / 12mm
- 48 x 9 / 10 / 11 / 12mm
- 50 x 5 / 6 / 8 / 10 /11 / 12 / 13 / 14 / 16 / 20 / 25 /32mm
- 65 x 6 / 8 / 10 / 12 / 16 / 20 / 25 /32mm
- 75 x 6 / 8 / 10 / 12 / 16 / 20 / 25 /32mm
- 100 x 6 / 8 / 10 / 12 / 16 / 20 / 25 /32mm
- 120 x 6 / 8mm
- 125 x 6 / 8 / 10 / 12 / 16 / 20 / 25mm
- 130 x 12mm
- 150 x 6 / 8 / 10 / 12 / 16 / 20mm
Hot dip Galvanised as per I.S. 2629 / 2633 / 4759.
The process of hot-dip Galvanising results in a metallurgical bond between zinc and steel with a series of distinct iron-zinc alloys. The resulting coated steel can be used in much the same way as uncoated.
A typical hot-dip Galvanising line operates as follows
|Steel is cleaned using a caustic solution. This removes oil/grease, dirt, and paint.|
|The caustic cleaning solution is rinsed off.|
|The steel is pickled in an acidic solution to remove mill scale.|
|The pickling solution is rinsed off.|
|A flux, often zinc ammonium chloride is applied to the steel to inhibit oxidation of the cleaned surface upon exposure to air.|
|The flux is allowed to dry on the steel and aids in the process of the liquid zinc wetting and adhering to the steel.|
|The steel is dipped into the molten zinc bath and held there until the temperature of the steel equilibrates with that of the bath.|
|The steel is cooled in a quench tank to reduce its temperature and inhibit undesirable reactions of the newly-formed coating with the atmosphere.|
- Galvanised iron strips are widely used for earthing purposes.
- GI Strips are attributed for high corrosion resistance, high conductivity, durability, long service life and no maintenance mainly used in water and rust resistance area.
- Galvanised strip is suitable for high-temperature applications of up to 392°F (200°C).
- GI Strips often used in automotive manufacturing to enhance the corrosion performance of exterior body panels.
- Coal Mines