Bwg 22 Galvanized Iron Wire for Construction

What is Galvanized Steel Wire?

Galvanized Steel Wire is wire that is coated with zinc to protect it from rust and corrosion. Zinc can be applied using a method of dipping the wire into a molten pool of zinc, or it can be electroplated onto the surface. Due to its durability and smooth surface, it is suitable for many applications.

GI wire manufacturing process

The production of GI wire is simple. We use steel rods as the raw material. Then the first step is to clean or pickle the coiled bar to remove oxides and impurities from the surface. Afterwards, the de-oxidized wire is passed through a wire drawing machine to produce the required size of wire. These wires are often referred to as "black wires". After pickling and annealing, the wires are then galvanized, both hot-dip galvanized and electro-galvanized. They are then rolled into coils. You can sell them in packages after quality control.

What is quality Galvanized Iron Wire?

1. First of all, the surface of the wire should be smooth and free from obvious defects such as sagging, dripping and slagging. For example, the zinc leakage area should be less than 0.5mm; in addition, there should be no more than 3 leakage points per square centimeter.

2. Secondly, the zinc layer should be uniform, firmly bonded to the base material, and not fall off or bulge by hammering test.

Thirdly, the diameter tolerance should be within a reasonable range.

Can Galvanized Wire be used outside?

Yes. One of the most important properties of galvanized wire is its ability to resist rust. Therefore, it is ideal for outdoor use, such as the outdoor fences we commonly see. For example, with ungalvanized wire, constant rain and wet weather can cause it to corrode quickly. However, unlike galvanized wire, it can adapt to harsh weather conditions. It stays in good condition even in wet and salty conditions.

Will galvanized wire rust?

The answer is yes, but very slowly. Galvanized wire is more resistant to corrosion than black Iron Wire . The galvanizing process involves applying a zinc coating to the surface of the wire. Due to the zinc oxide layer on the surface, it prevents the wire from rusting for many years. However, when the zinc layer breaks down, rusting will be inevitable. But as mentioned before, it is slow enough for your application, say for decades.

Types of galvanized steel wire

GI wire is divided into hot-dip galvanized wire and cold-dip galvanized wire (galvanized steel wire) according to the galvanizing process. Here are more details for your reference.

Hot-dip galvanized wire

Hot-dipped wire is processed by a hot-dip zinc bath process. This means that the wire is immersed in a hot molten zinc bath so that its surface is completely covered with a zinc coating. Hot-dipped GI wire has excellent corrosion resistance, flexibility and softness.

Manufacturing process: Steel Bar coils - Pretreatment - Drawing - Rust removal - Pickling --Hot-dip galvanizing --Annealing - (Re-drawing) --Coiling -Quality control -Packaging.

Electro Galvanized Wire

The difference between hot-dip galvanized wire and electro-galvanized wire lies in the galvanizing process. The latter uses the principle of electrolysis to coat the surface of the wire with a thin layer of zinc. It gives the wire a uniform and shiny surface.

Production process: Steel bar coils - pre-treatment - wire drawing (redrawing) - rust removal - pickling --Cold galvanizing---Coiling--Quality control--Packaging.

Specifications

1.Diameter range: 0.2-4.5mm
2.Tensile Strength: 300~1850 N/mm²
3.Standard: GB4357, DIN17223, JIS G 3521, A227, EN10270

4.Main application: making spring, mattress, wire rope.
5.Packing: pack in plastic spool, reel, bag, drum, carton and so on
Steel wire material: SAE1006, SAE1008, SAE1010, Q195, Q235, C45, C50, C55, C60, C65, 65Mn, C72A, C72B, C80, C82B, CT9A, GCr15, AND SO ON
The Raw Material: (45#, 60#, 65#, 62A, 72A, 65Mn, 70#, 82A, 82B, T9A, SAE1008, SAE1006, 18A, 22A)

Packaging and Shipping