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Pan-India Supply & Delivery
GC sheets are the classic corrugated (wavy) roofing sheets in galvanised steel. We make them on our own line, cut to your length for sheds, homes, farm and storage buildings, and supply across India. Ask for today's price, sizes and thickness.
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A GC sheet, or galvanised corrugated sheet, is a steel sheet coated with zinc and rolled into even waves for roofing and wall cladding. It is also called a GI corrugated sheet, CGI sheet or tin sheet, and is often spelt galvanized corrugated sheet.
900 mm overall≈ 785 mm covering widthCrest depth ≈ 16 mmCovering width with a 1½-wave side lap. Crest depth and pitch as per IS 277 (±2.5 mm and ±5 mm).
Where it is used
GC sheets go on roofs and walls wherever a strong, simple and economical steel sheet is needed. These are the most common uses.
Roofs for houses, rooftop rooms, verandahs and porches.
Open, airy cover for cattle, dairy and goat sheds.
Long, low-cost roofs for broiler and layer sheds.
Roof and wall sheeting for stores, godowns, workshops and small factory sheds.
Tool rooms, pump houses, parking sheds and farm stores.
Compound walls, site hoardings and partitions.
Photos show typical uses of corrugated galvanised sheets.
Why GC
The same reasons have kept the corrugated sheet on Indian roofs for generations.
The galvanised (zinc) coating shields the steel underneath from rust.
The corrugations stiffen a thin sheet, so it spans from one purlin to the next.
Easy to carry, lift and fix, which saves labour and time on site.
A low-cost way to cover a roof or wall, with little upkeep.
Every sheet is cut to the length you order, so there is less cutting and waste on site.
Sheets can be unbolted and used again, and steel is fully recyclable.
How it is made
From galvanised steel strip to a stack of sheets cut to your length. These are photos of our own GC line at work.
Galvanised steel strip passes through rows of rolls that press in the corrugations.
The corrugated sheet runs out of the machine and is cut to the length in your order.
Each sheet is lifted off by hand, with gloves on, and laid on the stack.
Finished sheets wait in flat stacks until they are loaded for your site.
Which profile
Both are roll-formed steel roofing sheets cut to your length. The shape is what differs, and so does where each one fits best.
| GC sheet | Hi-Rib sheet | |
|---|---|---|
| Shape | Even rounded waves | Trapezoidal ribs with a baby rib in every pan |
| Overall width | 900 mm | 1072 mm |
| Covering width | ≈ 785 mm | 1000 ±10 mm |
| Depth | Waves ≈ 16 mm deep | Ribs 28 ±2 mm high |
| Best for | Smaller sheds, homes, farm and storage buildings | Factories, warehouses and large sheds |
Looking for the ribbed profile? See our Hi-Rib colour coated roofing sheets.
Fixing & care
A few simple points help a GC roof stay dry and last longer.
General guidance for corrugated galvanised roofing. Your engineer or fabricator should decide the purlin spacing, fasteners and laps for your building.
Price & order
GC sheet prices move with the steel market, so we quote the rate for the day. It takes four steps from your message to sheets at your site.
WhatsApp us the thickness, sheet length, number of sheets and your site location.
We reply with today's price for your size and quantity.
Your sheets are roll-formed and cut to the lengths in your order.
The sheets are loaded and sent to your site, anywhere in India.
Questions
GC stands for galvanised corrugated. It is a steel sheet coated with zinc (galvanised) and rolled into a wavy (corrugated) shape for roofing and cladding.
Yes. Tin sheet (tin ki chadar), GI corrugated sheet and CGI sheet are everyday names for the same product: a zinc-coated steel sheet with a wavy profile. GC, short for galvanised corrugated, is the name used in the steel trade.
Our GC sheet is 900 mm wide overall and covers about 785 mm once the side laps are made. The waves are about 16 mm deep at a pitch of 76.2 mm. Every sheet is cut to the length you ask for; common lengths are 8, 10, 12, 14, 16 and 20 feet.
GC sheet prices change with the steel market and are usually quoted by weight, per kg or per tonne. The cost of one sheet, for example a 12 feet sheet, depends on its thickness. Send your thickness, length and quantity on WhatsApp and we will reply with today's price.
GC sheets are used for house and rooftop-room roofs, cattle and poultry sheds, godowns and stores, workshops and small factory sheds, boundary fencing and temporary site buildings. For large factories and warehouses we suggest the Hi-Rib profile.
Both are galvanised steel covered by the same Indian standard, IS 277. GP is the plain (flat) sheet. GC is the same galvanised sheet rolled into corrugations for roofing and cladding.
Divide the width of the roof by the covering width of one sheet (about 0.785 m) and round up: that is the number of sheets in one row. The sheet length is the sloping length of the roof plus the overhang. Send us your roof size on WhatsApp and we will work it out with you.
GC sheets are fixed through the top of the wave with galvanised J-hooks or bolts and washers. Overlap the sides by 1½ to 2 corrugations and the ends by 150 to 200 mm, on a roof slope not flatter than about 1 in 5. Your engineer or fabricator should decide the details for your building.
The zinc coating protects the steel from rust. To keep it that way, store the sheets dry and off the ground and do not drag one sheet over another. Sheets left stacked while wet can develop white marks, known as white rust.
GC sheets are the economical choice for smaller sheds, homes and farm buildings. Colour coated sheets have a paint layer over the metal coating, come in many shades and are the usual choice for factories and warehouses.
Yes. We manufacture GC sheets and supply and deliver them across India.
Need GC sheets cut to your length?
We manufacture GC sheets and deliver across India. Send your size and quantity on WhatsApp for today's price.
Planning a shed or warehouse?
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