Product · HSN 72103090
GI (Galvanised)
Zinc-coated steel for outdoor and structural service life, supplied in coil or sheet with controlled coating weight for consistent corrosion performance.
Specifications
| Thickness | As per need (0.20 – 3.00 mm) |
| Width | 600 – 1500 mm |
| Coating Type | Hot-dip zinc coating |
| Coating Weight | Z60 – Z275 g/m² |
| Grade | GP/GC (IS 277), SGCC, DX51D or as specified |
| Hardness | As per standard (60–85 HRB) |
| Tensile Strength | 270 – 410 MPa |
| Spangle | Regular, minimum or zero spangle |
| Surface | Chromated / passivated, oiled or dry |
| Color | Silver / metallic |
| Product Form | Coil, sheet or slit strip |
| Diameter | Inner 508 / 610 mm, outer as per coil |
| Corrosion Resistant | Yes |
| Steel Standard | IS 277, JIS G3302, ASTM A653, EN 10346 or equivalent |
| Recyclable | Yes |
| Application | Roofing, ducting, structural sections, fabrication |
| Standard | IS 277 |
| HSN code | 72103090 |
Where it is used
GI (Galvanised) supplied in the grade, size and finish roofing require.
GI (Galvanised) supplied in the grade, size and finish ducting & hvac require.
GI (Galvanised) supplied in the grade, size and finish structural sections require.
GI (Galvanised) supplied in the grade, size and finish fabrication require.
Available shapes & forms
Full coils in GI, GL or colour-coated finish.
Plain sheets cut to length for fabrication.
Narrow coils slit for purlins, ducts and sections.
Trapezoidal and corrugated roofing and wall sheets.
What Avighna does with GI (Galvanised)
How GI (Galvanised) is made
Cold rolled strip is cleaned and drawn continuously through a molten zinc bath.
- 1Cleaning & annealing
The strip is degreased and annealed in a reducing atmosphere so zinc can bond to bare steel.
- 2Hot-dip zinc bath
Strip passes through molten zinc at around 450 °C, alloying a protective layer onto both faces.
- 3Air-knife coating control
Gas jets wipe the surface to hold coating weight to specification, in grams per square metre.
- 4Skin pass & processing
A light rolling pass sets the spangle and flatness; we then shear or slit to the ordered size.