HDGI Chromated 6+ Zinc 100g/Sqm Bright Regular Spangle Hot-Dip Galvanised Steel GI Coils For Rolling Doors S320GD
Product details
Hot-dip galvanising, also known as hot-dip galvanising, is a method of rustproofing steel parts by placing them in a molten zinc solution, which gives the parts a protective coating of the metal. Hot dip galvanising has the advantages of high corrosion resistance, controlled thickness and surface morphology, maintenance-free and low cost.
Applications
- Corrugated steel sheet
- Ceiling channel
- Industrial refrigeration
- Cold storage
- Door panel
- Sandwich panel
- PU board, writing board,
Advantages
1, galvanised layer has good corrosion resistance, in general urban and rural atmospheric environment, the thickness of the zinc layer each year only corrosion loss of 1 ~ 3 microns, the zinc layer closely protects the steel base from corrosion.
2, zinc layer adhesion is excellent, when the galvanised sheet is subjected to very complex deformation processing, the zinc layer will not fall off.
3, good heat reflection, can be used as heat insulation materials.
4,Surface luster is maintained for a relatively long time.
| Standard | JIS / EN / ASTM Standard |
| Grades | SGCC/SGCD/SGCE,SGHC,SGC280GD/SGC340/SGC400/SGC440/SGC490/SGC570 |
| S220GD/S250GD/S280GD/S320GD/S350GD/S550GD |
| SS230/SS250/SS275/SS340/SS380/SS410/SS480/SS550 |
| A653 CS-A/ CS-B, ASTM A653Gr.33/Gr.37/Gr.40/Gr.50/Gr.80, |
| DX51D/DX52D/DX53D/DX54D/DX56D etc. |
| H220PD/H300PD/H180YD/H200YD/H260YD |
| H180BD/H220BD/H260BD/H300BD |
| H260LAD/H340LAD/H420LAD |
| DP590/DP780 |
| Coating | Z60-Z450 or G40/G60/G90/G120/G150 |
| Spangle | Regular spangle / Minimized spangle / Zero spangle |
| Sizes | Thickness:0.12mm-4.5mm Width: 900mm-1500mm
|
| ITEM | CODE | DESCRIPTION |
| CHROMATED | R | This surface treatment can reduce the white rust generated on the surface of the product during transportation and storage. Restricting hexavalent chromium substances harmful to human health in passivation films. |
| CHROMATED FREE | CS | This surface treatment can reduce the white rust generated on the surface of the product during transportation and storage. Restricting hexavalent chromium substances harmful to human health in passivation films. |
| ANTI-FINGER PRINT FREE CHROMATED | A | This surface treatment can reduce the white rust generated on the surface of the product during transportation and storage. Fingerprint resistant film can improve the sweat stain resistance of electronic or electrical product surfaces. Chromium free fingerprint resistant film restricts hexavalent chromium substances that are harmful to human health. |
| OILED | O | This surface treatment can reduce the white rust generated on the surface of the product during transportation and storage. The anti rust oil applied is generally not used as rolling oil and stamping lubricating oil for subsequent processing, and the anti rust effect is worse than that of passivation method. |
| UN-TREATMENT | U | This surface treatment is only applicable when the purchaser explicitly requests not to undergo surface treatment during the ordering period, and it must be specified in the contract. In this case, the surface of steel plates and strips is prone to white rust during transportation and storage. |
Main characteristics of galvanised steel
Corrosion protection: 13 years for heavy industrial areas, 50 years for marine, 104 years for suburban areas and 30 years for urban areas.
Inexpensive: Hot dip galvanising costs less than other coatings.
Reliable: The zinc coating is metallurgically bonded to the steel and forms part of the steel surface, making the coating more durable.
Toughness: the galvanised steel layer forms a special metallurgical structure that can withstand mechanical damage during transport and use.
Comprehensive protection: every part of the coating can be galvanised and is fully protected even in depressions, sharp corners and hidden areas.
Saving time and effort: the galvanising process is faster than other coating methods.
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hDGI chromated 6+ Zinc 100g/Sqm Bright regular Spangle Hot-Dip Galvanised Steel GI Coils For rolling Doors S320GD Images
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