Galvanizing Services – Zinc-Coated Steel for Superior Corrosion Resistance
Galvanizing is one of the most trusted and economical methods of protecting steel from corrosion, especially in environments exposed to moisture, chemicals, or coastal air. At United Steel Industries, we offer end-to-end hot-dip galvanizing services for a wide range of steel products — from GI sheets and coils to angles, channels, pipes, flats, and MS plates. Whether you need bulk galvanizing for infrastructure or custom treatment for fabrication, we ensure consistent coating quality and fast turnaround.
What is Galvanizing?
- Galvanizing is the process of applying a zinc coating to mild steel to prevent rust and surface degradation. The most common method, hot-dip galvanizing, involves immersing cleaned steel into a bath of molten zinc. This creates a durable, metallurgically bonded protective layer that resists corrosion even in the harshest environments. The result is what the market often refers to as GI (Galvanized Iron) — zinc-coated steel that offers both longevity and low maintenance.
Why Choose Hot-Dip Galvanizing?
- Provides full coverage, including corners and edges
- Strong metallurgical bond between zinc and steel
- Long-lasting protection without frequent repainting
- Ideal for outdoor, marine, industrial, and infrastructure projects We also cater to GI dipped requirements where visual finish, thickness, and uniformity are essential — including zero spangle, regular spangle, and minimized spangle finishes based on your end-use.
Understanding GSM and Microns in Galvanizing
- GSM (Grams per Square Meter) is a key metric in galvanizing, indicating the weight of zinc coating on the surface of steel. Higher GSM values mean thicker zinc layers and better protection. Our galvanizing services cover a range from:
- 80 to 100 microns (~570 to 700 GSM): Suitable for general-purpose construction and indoor use
- Up to 200 microns (~1400 GSM): Heavy-duty applications like marine environments, bridges, and industrial structures We can customize the coating thickness as per your project requirements and regulatory standards.
Commonly Galvanized Products We Handle
- 1. GI Sheets:
Corrugated or plain galvanized iron sheets used for roofing, cladding, and partitions in industrial and residential structures. - 2. GI Coils :
Available in slit or full form, with spangle options based on your aesthetic or processing needs. Common in ducting, fabrication, and auto parts. - 3. Angles & Channels:
Galvanized mild steel angles and channels for frames, supports, fencing, and civil construction. - 4. Pipes (GI Pipes):
Used in fencing, plumbing, scaffolding, and greenhouses. Available in threaded/plain-end with variable GSM. - 5. MS Flats & Flat Bars:
Ideal for railing frames, gates, ladders, and custom fabrications — available in standard and heavy zinc-coated formats. - 6. Steel Plates & Sheets:
Large MS plates and chequered sheets for industrial flooring, machinery bases, and tanks, with galvanizing options up to 200 microns
Applications of Galvanized Steel
- Transmission towers & solar structures
- Roadside barriers and poles
- Staircases and walkways
- Coastal & offshore infrastructure
- Pre-engineered buildings (PEBs)
- Agriculture and irrigation equipment
- Fencing and gates
Why United Steel for Galvanizing?
- 50+ years of steel experience across South India
- State-of-the-art zinc coating and quality testing
- Logistics to deliver across Chennai, Tuticorin, Port Blair, and South India
- Technical guidance on GSM selection and steel grade matching
- End-to-end support — from supply to coating to dispatch
Need help choosing the right GSM or product for galvanizing?
- We’ve supplied GI materials and services for builders, contractors, and OEMs across India and the Andaman Islands. Reach out to our experts to get custom recommendations based on your project’s environmental conditions and service life expectations.
Contact us today for a quote on galvanized steel services tailored to your needs.