GI/HDG Z100 Zinc Coating Galvanized Steel Coils
Introduction of GI/HDG Z100 Zinc Coating Galvanized Steel Coils
For galvanized steel coils, the thin steel sheet is immersed in the molten zinc tank so that a thin sheet with a zinc layer adheres to the surface. Therefore, it is mainly produced by the continuous galvanizing process; the coiled steel sheet is continuously immersed in a galvanized bath with molten zinc to make it an alloyed galvanized steel sheet.
Production process of GI/HDG Galvanized Steel Coils
Cold Rolled Steel Coil(CRC)→Decoil→Entry Looper→Skim→Cleaning→Air Dry→Annealing→Zinc Pot→Air Cooling→Leveller→Chromated→Dry→Exit Looper→Colling→Packing
Surface treatment of GI/HDG Galvanized Steel Coils
1 Passivation
Passivation treatment of the galvanized layer can reduce folding rust (white rust) under moisture storage and transportation conditions.
2 Oiling
Oiling can reduce the steel plate's corrosion. After the passivation treatment of steel plates and strips, repainting oil will further reduce corrosion under humid storage conditions.
3 Lacquer seal
Coating a fragile transparent organic coating film can provide an additional anti-corrosion effect, especially fingerprint resistance. In addition, it can improve lubricity during molding and serve as an adhesion base layer for subsequent coatings.
4 Phosphating
Various coating types of galvanized steel sheets can be coated through phosphating treatment without further treatment except for regular cleaning. This treatment can improve the coating adhesion and corrosion resistance and reduce the risk of corrosion during storage and transportation. Finish phosphating can be used with a suitable lubricant to improve molding performance.
The Advantage of Hot Dipped Galvanized/Galvanneal Steel Coils
1,The zinc layer has uniform thickness and strong adhesion. No peeling and good corrosion resistance.The Surface is very smooth and clean,zinc flower is symmetrical,beautiful.
2,Galvanized Coil With the cold rolled steel of different strength and thickness as substrate, it is produced through applying the zinc coated on both faces by hot dip process.
3,Large inventory All products are packed and warehousedafter passing the inspection, and deliveredin one order. So as to ensure that the customer's products can be delivered in the shortest time. You don't have to worry about the quality and transportation of the goods at all.
Application of Hot Dipped Galvanized/Galvanneal Steel Coils
Galvanized steel coils(GI steel coils) can be used for widely as follows,
(1)In the construction industry: to manufacture exterior and Interior products such as metal shingles, corrugated sheeting, sandwich panels, profiles, metallic ceilings, skirting boards, decorative panels inside heated and non- heated rooms, elevators, doors window shutters, shelves etc.
(2)In the automotive industry: to manufacture external and internal car body parts (car doors, car boots, oil filters, dashboards, windscreen wipers etc.
(3)In manufacture of home appliances, furniture, and consumer goods: metallic furniture, lighting equipment, shelves, radiators, сar doors, car boots etc.
Specifications of GI/HDG Z100 Zinc Coating Galvanized Steel Coils
| Width | 600mm-1750mm |
| Thickness | 0.13mm-5.0mm |
| Length | customized |
| Zinc Coating | Z40gr/m2-Z400gr/m2(both side total coating thickness) |
| Surface | Skin-pass/non Skin-pass |
| Chemical treatment | Chromated(Cr 3+,6+,0+) |
| Spangle | Regular/Zero/Big |
| Oil | Slight Oiled/Dry |
| Grade | JIS G3302-SGCC-SGC570,SGCH(full hard-G550),SGHC-SGH540
EN10346-DX51D+Z,DX53D+Z,S250GD-S550GD |
| Packing | Export standard packing ,3 Layers-kraft paper outside+waterproof plastic film in the middible+steel plate vovered with strips |
| Coil Weight | 3-14 tons |
| Coil ID | 508/610mm |
| HRB | Soft Hard(<60),Medium Hard(60-85),Full Hard(85-95) |
| Rar Materials | Cold rolled base |
| Usage | Grade | Yield Strength (MPA) | Tensile Strength (MPA) | Elongation rate % |
| Punching galvanized steel | DX51D+Z | ~ | 270-500 | >=20 |
| DX52D+Z | 140-300 | 270-420 | >=22 |
| DX53D+Z | 140-260 | 270-380 | >=26 |
| DX54D+Z | 140-220 | 270-350 | >=30 |
| Structure galvanized steel | S220GD+Z | >=220 | >=300 | >=18 |
| S250GD+Z | >=250 | >=330 | >=17 |
| S280GD+Z | >=280 | >=360 | >=16 |
| S320GD+Z | >=320 | >=390 | >=15 |
| S350GD+Z | >=350 | >=420 | >=14 |
| S400GD+Z | >=400 | >=470 | ~ |
| S500GD+Z | >=500 | >=530 | ~ |
| S550GD+Z | >=550 | >=560 | ~ |
Spangle is formed during the hot-dip galvanizing process. The size, brightness, and surface of spangles mainly depend on the composition of zinc layer and the cooling method. According to the size, it includes small spangles, regular spangles, big spangles, and free spangles. They look different, but the spangles almost will not influence the quality of galvanized steel. You can choose according to your preference and purpose.
The hot usage of GI/HDG Galvnaized Steel Coils
- Cutting to Sheet to Produce Corrugated Roofing Sheet
- Slitting to Steel Strips
Photos Display of GI/HDG Galvanized Steel Coils
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HDG Z100g Galvanized GI Steel Coil Steel Regular Spangle ASTM A653 Images
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