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Important facts about GI Wire

Important facts about GI Wire by Vishal Industries Chandigarh

GI wire is commonly known as Galvanized Iron Wire or galvanized wire. GI Wire is a kind of wire that is created by applying a zinc coating on carbon MS Wire. The zinc coating shields the Mild Steel Wire from rust and corrosion, which functions as a barrier. This zinc coating application procedure is known as galvanization, which is why galvanized iron wire is the term used to describe it. Because of its increased durability and resistance to corrosion, gi wire is used in many different applications. In this blog, we will discuss all the features, benefits, and applications of gi wire in detail.

Features of GI Wire:

GI wire has vast and unique features. Let’s discuss these one by one

1.       Corrosion Resistance of GI wire: 

This is the most important and primary feature of GI wire. The zinc coating is applied on the MS wire through the Galvanization Process. The zinc acts as a barrier between the environment and the wire, thus protecting the wire from rust.

2.       Durability of GI wire:

GI Wire has both corrosion resistance and strength properties. It may withstand harsh environmental conditions for many years before required to be replaced. GI wire is perfect for usage in challenging conditions and outside applications.

3.       Strength & Flexibility of GI wire: 

GI wire can sustain heavy loads without breaking because of its great tensile strength. Due to the high tensile strength of GI wire, it is used in fencing, heavy construction equipment, etc. GI wire has a high degree of flexibility because of which it can be bent and carved without compromising its structural integrity.

4.       Affordability of GI wire:

GI wire is significantly cheaper than other corrosion-resistant materials, such as stainless steel. Because of this, it's an affordable choice for an array of applications when budget is limited.

5.       Versatility of GI wire:

GI wire can be used for a variety of purposes because it is available in a wide range of sizes, gauges, and finishes. Its application possibilities are further expanded by its ability to be plain, barbed, twisted, or welded. In earthing systems, GI wire is used to safely disperse electrical charges into the ground. 

Manufacturing Process of GI Wire:

1.       Raw Material: 

The raw material for GI wire is Mild Steel rod.

2.       Descaling:

Mild Steel rods have a layer of carbon over them because of air exposure. So, before using them for further steps this carbon layer has to be removed. This process is known as Descaling.

3.       Pickling:

Steel rods undergo a pickling/cleaning process. This includes borax, phosphate, or lime water treatment for the removal of remaining carbon on the wire.

4.       Wire Drawing:

These steel rods are then passed through a wire drawing machine. The steel rod has to undergo different dies to get the desired diameter and strength.

5.       Galvanization:

This is the main step of GI wire manufacturing. The steel wire is dipped into a bath of molten zinc. In this step, the zinc coating is applied to the MS wire. The galvanization process is of 2 types- Hot dip and cold dip galvanization

·         Hot Dip Galvanization for GI wire –

It is the most common form of galvanization. In Hot dip galvanization, the steel wires are dipped into a molten zinc bath at a temperature of around 450 degrees Celsius. After removing it from the bath, zinc comes in direct contact with oxygen and forms Zinc oxide. Zinc oxide then reacts with Carbon dioxide to form a dull greyish protective layer known as Zinc Carbonate. This layer adheres tightly to the surface of the wire and hence acts as a barrier. Hot dip galvanization offers a longer shelf life and little costlier.

· Electro-galvanization for GI wire –

The process of zinc electroplating on the MS wire through electrically and chemically is known as Electro Galvanization. In this process, MS Wires are fully immersed in the zinc solution, and electricity flows in the solution. Zinc acts as an anode whereas steel acts as a cathode. Electricity is used to move electrons from the anode to the cathode. Zinc acts as a barrier layer on the top of MS wire to prevent it from rust. Cold dip galvanization has a uniform and thinner coating, thus less expensive as compared to hot dip galvanization.

Uses of GI wire:

1.       Binding and Reinforcement of concrete structure:

GI wire has anti-corrosion and weather-resistance properties. These properties make it an important material for binding and securing construction materials such as bricks, pipes, etc. for maintaining alignment. GI wire mesh helps in evenly distribution of stress throughout the concrete allowing it to bear high load without breaking.

2.       Protection and Fencing:

In the field of fencing and protection, GI wire plays a very important role. Barbed GI wire is used as a safety barrier, fencing, partition, etc. GI wire has a very long shelf life and high strength therefore its mesh is widely used in Pharmaceutical, chemical, mining, and oil refineries for safety purposes.

3.       Agriculture:

GI wire is widely used in farming. In orchards and vineyards, GI wire is used to build lattice structures that sustain the growth of fruit and vegetable plants e.g. Tomatoes, onions, cauliflower, etc. GI wire is also used to make cages for small animals such as rabbits, mice, and poultry animals.

4.       Electrical Uses:

Electrical systems are grounded with GI wire to prevent surges and lightning strikes. GI wire offers a secure outlet for surplus electricity.

5.       Other uses:

GI wire having a thinner gauge is used in crafting projects such as jewellery and sculpture making. GI wire has high tensile strength so it can be used to hang pictures, clocks, and other items.


In conclusion, GI wire has a wide range of features and applications, making it very useful in every field. The gauge of GI wire depends on the purpose of the application. Thick gauge GI wires are used in construction or heavy industry projects whereas thin gauge GI wires are used in small crafting projects. The price of the gi wire depends on the quantity of the gi wire. GI wires are manufactured from MS wires and because of their huge range of uses, they are always in high demand in the market.

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