Galvanized Steel

Hot Dipped Galvanized Steel Sheet in Coil (GI) is produced by passing the Full Hard sheet which has undergone the acid washing process and rolling process through the zinc pot, thereby applying zinc film to the surface. It has excellent corrosion resistance, paintability, and workability due to Zinc’s characteristic. Usually hot dipped galvanized steel sheet and galvanized steel coil process and specifications are basically the same.

Hot-dip galvanizing is the process of applying a protective zinc coating to steel sheet or iron sheet, to prevent rusting.

  • Excellent anti-corrosion, paintability, and processability due to the self-sacrificing characterisiticof zinc.
  • Available to select and produce the desired amount of zinc gilded and in particula enables thick zinc layers(maximum 120g/m2).
  • Classified as either zero spangle or extra smooth depending on wheteher the sheet undergoes skin pass treatment.


Product nameGalvanized Steel Coil
MaterialCGCC, DX51D,Q195,Q235
Zinc Coating20-120g/m2
Thickness0.13-0.8 mm
Width600-1250 mm
Coil ID508/610mm
Coil weight3-8 tons
Surface StructureMini/Big Spangle
Surface TreatmentAnti-Finger printing ,Chromated, oiled/ non-oiled
Packagestandard export package (Detailed picture is as follows)
Hardnesssoft (normal), hard, full hard(G300-G550)
HS code721049
Brand nameGRSSTEEL
Country of originChina
Business typeSupplier and manufacturer

Hot Dipped Galvanized Steel Sheets

Hot Dipped Galvanized Steel Sheet’s specifications is thickness(0.14-1.0mm), width(600–1250mm). It is used for producing garage door, roofing tile, work shop construction, safety fence. Galvanised steel sheet’s properties make it tough enough for most exterior projects.

According the surface for galvanized steel sheet, there are big spangle,mini spangle and zero spangle.


Product nameGalvanized Steel Sheets
Zinc Coating20-120g/m2
Width600-1250 mm
Thickness Tolerance+0/-0.001
Width Tolerance+/-0.06
Length Tolerance+/-0.06
Surface StructureMini/Big Spangle
Surface TreatmentAnti-Finger printing ,Chromated, oiled/ non-oiled
Packagestandard export package (Detailed picture is as follows)

Surface Finish

Surface StructureMini SpangleBig Spangle
Weight of zinc coatingZinc > 20g/smZinc > 30g/sm
Surface FinishGalvanized Steel Coil Sheet 1Galvanized Steel Coil Sheet 2

Hot Dipped Galvanized Steel Coil&Sheet Production Line​

The manufacturing of galvanized steel coil&sheet with good weather resistance, primarily used in construction.

Galvanized steel coils production process:

  1. Uncoiler
  2. Welder
  3. Entry Looper
  4. Pre-treatment
  5. Annealing Furnace
  6. Zinc Pot
  7. Cooling Tower
  8. Water Quench Tank
  9. Skin Pass
  10. Tension Leveler
  11. Passivation Coater
  12. Exit Looper
  13. Recoiler

Galvanized Coating Layer

Use bending machine, pencil hardness tester, gloss meter, meteorologic tools, row lattice unit, micrometer tools, thickness gauge to control the quality of galvanized steel coil.

Packing Detail

Packaging Details:

  1. Each bare coil to be securely tied with two bands through the eye of coil (or not) and one circumferential.
  2. the contact points of these bands on the coil edge to be protect with edge protectors.
  3. Coil then to be properly wrapped with water proof /resistant paper, it then to be properly and completely metal wrapped.
  4. Wooden and iron pallet can be used or as your requirements.
  5. And each packed coil to be properly wrapped with band, three-six such band through the eye of coil at about equal distance.

Galvanized FAQ

What is Hot Dipped Galvanized Steel

Hot Dipped Galvanized Steel Sheet in Coil is carbon steel sheet coated with zinc on two sides by a continuous hot-dip process. This method tightly adheres the coating to the steel with an iron-zinc alloy bonding layer formed by a diffusion process while the heated steel strip is in contact with the molten zinc. One of the drawbacks of Galvanized is that if the Zinc coating is scratched off the steel, the Steel is left unprotected, and is subject to failure.

Hot Dipped Galvanized Steel Coils Prices

The prices of hot dipped galvanized steel coils depend on zinc thickness, steel coil thickness, packing method. If you want to buy cheap galvanized steel coils, please choose 20 grams of zinc coating/㎡, steel coil of 0.8mm thickness and simple packaging. please visit Color Coated Steel Coil Price: Factors Affecting.