Z275 Corrugated Wave Galvanized Roofing Sheets
Galvanized roofing sheets are produced with hot-dip zinc coating for construction projects. Witop provides reliable bulk supply.
Strong Structural Performance; Reliable Zinc Coating Protection; Ready-to-Install Design; Wide Thickness & Length Options; Bulk Production & Export Support
Galvanized Roofing Sheets Technical Sheet
| Corrugated Galvanized Steel Roofing Sheet | |
| Standard | JIS G3302,EN10147,ASTM A653M |
| Grade | SGCC,ย SGCH |
| DX51D,ย DX52D | |
| S280GDย S320GDย S350GD | |
| Type | Wave-Shape and Trapezoid-Shape |
| Zincย Coating | 40-275G/M2 |
| Spangleย Model | Zeroย Spangle,ย Smallย Spangle,Regularย Spangle,ย Bigย Spangle |
| Thickness | 0.09-0.6MM |
| Width before Corrugated (BC) | 750MM,762MM, 900MM, 914MM, 1000MM,ย 1200MM |
| Width after Corrugated (AC) | 665MM, 680MM, 800MM, 840MM, 850MM, 870MM, 875MM, 900MM,ย 1100MM |
| Bundleย Weight | 3-4MT/Bundleย orย Customized |
| Package | Standard Seaworthyย Exportingย Package |
| MOQ | 25MT |
| Capacity | 5000MT/Month |
| Transportย Type | Vessel Container, Vessel Bulk, Railway Container, Railway Wagon |
| Loadingย Port | Tianjin,ย Qingdao, Ningbo, Shanghai and other port |
| Deliveryย Time | 20-25ย Daysย afterย receiving the deposit |
| Terms of Trade | EXW,FOB,ย CFR,ย CIF |
| Terms of Payment | TT and Irrevocable LC at Sight |
Galvanized Roofing Sheets Description
Galvanized Roofing Sheets Description covers hot-dip zinc coated metal panels designed for durable roofing and wall cladding systems. As a professional manufacturer and bulk supplier, we provide sheets with Z30โZ275 coating, thickness from 0.09โ0.6mm and customizable lengths to meet different project requirements.
Compared with galvanized steel coil,ย roofing sheets are ready for direct installation, reducing fabrication time and labor cost. Widely used by contractors, distributors and building material companies, our galvanized roofing sheets ensure stable quality, strong load-bearing capacity and reliable long-term performance.
Galvanized Roofing Sheets Applications
Industrial & Warehouse Roofing
Galvanized roofing sheets are widely used for factory buildings, logistics warehouses and workshops. Their corrugated or trapezoidal profiles provide strong load-bearing performance for large-span roofing systems.
Residential Housing Projects
In developing markets, galvanized roof sheets are preferred for cost-effective housing due to easy installation and reliable weather protection.
Agricultural Buildings & Storage
Suitable for barns, livestock shelters and grain storage facilities, where durability and corrosion resistance are required in humid environments.
Temporary & Modular Structures
Lightweight and easy to transport, galvanized roofing sheets are ideal for prefabricated houses, temporary shelters and site offices.
Wall Cladding & Fencing Systems
Besides roofing, galvanized sheets are also used for exterior wall cladding and protective fencing in industrial zones.
Infrastructure & Public Facilities
Applied in schools, parking sheds and bus stations where quick construction and structural reliability are priorities.
Steel Roofing Sheet Process Flow Chart
1. Uncoiler
2. Feeding Table
3. Roll Froming System
4. Safety Fence
5. Post-Cutting
6. Finished Product Output Supporter
Standard export package
Covered with a layer of inside anti-water craft paper, middle PVC plastic film and outside 0.45mm thick steel sheet, packed on the iron pallets, bound with iron belt strip.
WITOP steel can pack steel roofing sheet based on customerโs requirement.
FAQ โ Galvanized Roofing Sheet
Galvanized roofing sheet is a roofing material made from galvanized steel coated with a protective zinc layer through a hot-dip galvanizing process. The zinc coating protects the steel from corrosion, making it suitable for roofing and construction applications.
Galvanized roofing sheets are widely used in industrial buildings and warehouses, residential houses, agricultural buildings, commercial structures, storage facilities, and temporary construction buildings. They are a primary choice for roofing and wall cladding systems.
Typical thickness ranges include:
0.12 โ 0.18 mm: Lightweight roofing
0.20 โ 0.30 mm: Standard roofing sheets
0.35 โ 0.50 mm: Industrial roofing
0.50 โ 0.80 mm: Heavy-duty roofing panels
Thickness selection depends on the roof span and specific structural requirements.
Common zinc coating weights include Z60 for indoor roofing, Z80 โ Z120 for standard roofing, Z180 for outdoor roofing, and Z275 for high corrosion resistance. Higher zinc coatings provide significantly better protection in humid or coastal environments.
Common profiles include corrugated roofing sheets, trapezoidal roofing sheets, IBR roofing sheets, and tile profile roofing sheets. The profile design depends on regional roofing standards and the available roll forming machines.
Key advantages include good corrosion resistance, affordable cost, and a lightweight profile. They are easy to install, widely available, and suitable for a variety of roofing systems, making them a highly cost-effective solution.
Yes. Galvanized roofing sheets can be painted to produce color coated roofing sheets (PPGI roofing sheets). This process improves the aesthetic appearance and provides an additional layer of weather protection.
The lifespan depends on the zinc coating weight and environment:
Rural areas: 20โ30 years
Industrial environments: 15โ25 years
Coastal areas: 10โ20 years
Increasing the zinc coating weight directly enhances durability.
Common sheet widths and their effective coverage include:
914 mm coil width: ~760โ820 mm effective width
1000 mm coil width: ~840โ900 mm effective width
1200 mm coil width: ~1000โ1050 mm effective width
Actual effective width depends on the specific roofing sheet profile.
Major buyers include roofing sheet manufacturers, building material distributors, construction contractors, steel structure companies, and agricultural building suppliers. Bulk orders usually range from 20 to 200 tons per order.
Common international standards include ASTM A653, EN 10346, JIS G3302, and GB/T 2518. These standards define coating weight, mechanical properties, and tolerances.
Galvanized roofing sheets use a pure zinc coating and offer a lower cost. Aluzinc roofing sheets use an aluminum-zinc alloy, which provides higher corrosion resistance and generally a longer service life in harsh environments.
While galvanized roofing sheets are highly resistant to rust, the zinc coating may gradually wear away over time. Once the zinc layer is depleted and the base steel is exposed, corrosion may begin.
Standard export packaging includes waterproof paper protection, plastic film covering, steel strapping, and wooden pallets or bundles. Proper packaging is essential to protect sheets from moisture damage and deformation during transport.
Key factors include stable zinc coating quality, accurate sheet thickness, consistent roofing profiles, reliable export packaging, strong manufacturing capacity, and stable bulk supply. Direct manufacturers with export experience are often preferred by international buyers.
