Description of Galvanized Rolled Steel

Hot dipped  is a carbon steel sheet coated with zinc on both sides through a continuous hot-dip process. When the heated steel strip is in contact with the molten zinc, the coating is firmly adhered to the steel by the iron-zinc alloy adhesive layer formed by the diffusion process. One of the disadvantages of galvanizing is that if the zinc coating is scraped off the steel, the steel will lose its protection and may fail.

 

Specification of Galvanized Steel Sheets

Product name	Galvanized Steel Sheets
Zinc Coating	20-120g/m2
Thickness	0.14-1.0mm
Width	600-1250 mm
Length	Custom
Thickness Tolerance	+0/-0.001
Width Tolerance	+/-0.06
Length Tolerance	+/-0.06
Surface Structure	Mini/Big Spangle
Surface Treatment	Anti-Finger printing, Chromated, oiled/ non-oiled
Finish	Galvanized

Surface Finish of Galvanized Steel Sheet

Surface Structure	Mini Spangle	Big Spangle
Weight of zinc coating	Zinc > 20g/sm	Zinc > 30g/sm
Surface Finish	.	.

Galvanized Steel Sheet 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

 

 

 

Quality Control of Galvanized Steel Sheet

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

 

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