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Galvanized Iron
INTRODUCTION: GALVANIZED STEEL IRON COIL AND SHEET
Galvanized sheet or coil is a process by which zinc, a non-corrosive metal, is coated over corrosive metals, such as iron and steel. Because zinc is more reactive than iron or steel, the zinc galvanized coating corrodes first, protecting the steel or iron substratum. When exposed to the atmosphere, zinc reacts with oxygen to form zinc oxide. This further reacts with carbon dioxide to form zinc carbonate, a fairly strong material that stops further corrosion by protecting the steel or iron from the elements.
Galvanized steel is widely used in applications where rust resistance is needed, such as roofing and walling, handrails, consumer appliances and automotive body parts.
SPECIFICATIONS OF GALVANIZED STEEL IRON COIL
Type
JIS G3302, ASTM A653M, EN10142
Weight
According to customer’s requirement
Thickness Range
Thickness Range
Inside Diameter
508mm / 610mm
Standard Width
914mm / 1000mm / 1219mm / 1250mm
(Special width can be available upon request)
Grade
- SGCH (Hard Quality)
- SGCC (Commercial Quality) Annealed
Zinc Coating Mass
Refer Table 1
Zinc Mass | Mass Weight | JIS | ASTM | EN 10142 | BS 2989 | AS 1397 | |
A653 | A653M | ||||||
60 | Z06 | ||||||
80 | Z08 | ||||||
100 | Z10 | Z100 | Z100 | Z100 | |||
120 | Z12 | G40 | Z120 | ||||
140 | Z140 | ||||||
180 | Z18 | G60 | Z180 | Z200 | Z200 | ||
200 | Z20 | Z200 | |||||
220 | Z22 | G70 | |||||
225 | Z225 | ||||||
250 | Z25 | ||||||
275 | Z27 | G90 | Z275 | Z275 | Z275 | Z275 | |
350 | Z35 | G115 | Z350 | Z350 | Z350 | Z350 | |
430 | G140 | Z450 | Z450 | Z450 | |||
SURFACE CONDITION
Zero
More minimized spangles than regular, with a beautiful gloss, suited for general painting applications
Ultra
Extremely minimized spangles suited for special painting applications
Regular
Standard spangles with flower pattern, suited for general use
Alloy coated iron-zinc
Galvannealed steel sheet has a highly workable iron-zinc alloy layer. Good paint-adherence properties, corrosion resistance and weldability make them ideal for use in home electrical appliances and buildings
SURFACE TREATMENT
Surface Treatment
- Chromated
- Chromated & oiled
- Non- chromated but oiled
APPLICATION of Galvanized Iron
Galvanized Sheets are used extensively in various applications. Some of the common uses are:
- Agriculture : Grain Silos, Sprayers, Ghamellas, Pans, Feeding Troughs, etc.
- Automobile : Cars, Busses, Truck Bodies, Undercarriage Work, Air & Oil Filters, Fuel & Oil Tanks, Exhaust Pipes
- Construction : Roofing, Side Walls, Partitions, Panels, Valley Gutters, Louvers, False Ceilings, Partition Walls and Ducks, Rolling Shutters, Highway Bumpers, Slotted Angles, Paint-Coated Products.
- Domestic : Trunks, ice Boxes, Household Machines, Tubs, Pails, Buckets, Storage Bins, Water Tanks, Washing Machines, Bathroom Doors, etc.
- Electrical Appliances : Air-conditioners, Coolers, Refrigerators. Freezers, Electrical Panels, Decorative Lamps
- Furniture & Fixtures : Desks, Lockers,Racks, Lightweight Chairs, Colour Coating, PVC Coating
- Marking of Coils : Ducting, Drums/Barrels, Containers, Thermal Cladding, Air-Conditioning Ducts, Railway Coaches and other Applications
- Outdoor : Sign-boards, Hoardings, Road Sings