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INTRODUCTION: GALVANISED 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
Grade SGCH (Hard Quality)
SGCC (Commercial Quality) Annealed
Thickness range 0.18mm - 3.00mm
Standard width 914mm / 1000mm / 1219mm / 1250mm
(Special width can be available upon request)
Weight According to customer's requirement
Inside diameter 508mm / 610mm
Zinc coating mass Refer Table 1
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Zinc Mass
Mass Weight
g/m²
JIS
G3302
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
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SURFACE CONDITION


Type Surface Finish
Regular Standard spangles with flower pattern, suited for general use
Zero More minimized spangles than regular, with a beautiful gloss, suited for general painting applications
Ultra Extremely minimized spangles suited for special painting applications
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
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SURFACE TREATMENT


Surface Treatment Chromated
Chromated and oiled
Non-chromated but oiled
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APPLICATION


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
 
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