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Discover the epitome of strength and reliability with our 1.5mm Galvanised Steel Sheet, engineered to redefine standards in galvanized sheet metal roofing. Crafted with precision and coated for exceptional protection, this sheet offers unmatched durability and versatility, making it the preferred choice for roofing applications in diverse construction projects.
Key Features:
High-Quality Galvanized Steel Composition: Manufactured from premium-quality galvanized steel, our sheet embodies superior strength and resilience. The galvanized coating acts as a protective barrier, shielding the steel substrate from corrosion, rust, and environmental elements.
Optimal Thickness: With a thickness of 1.5mm, our galvanised steel sheet strikes the perfect balance between strength and flexibility. This thickness ensures structural integrity while minimizing weight, making it suitable for roofing applications in residential, commercial, and industrial buildings.
Enhanced Corrosion Resistance: Our sheet is galvanized with a protective zinc coating, enhancing its resistance to corrosion and oxidation. This coating ensures long-term durability and weatherproof performance, even in challenging environmental conditions.
Versatile Applications: From roofing to cladding and structural components, our galvanised steel sheet finds applications across diverse construction projects. Its versatility, combined with its superior protection and durability, makes it an indispensable material for builders, architects, and contractors.
Applications:
Metal Roofing: Our galvanised steel sheet is ideal for metal roofing applications in various construction projects. Its robust construction and corrosion-resistant coating provide long-lasting protection against the elements, ensuring a durable and reliable roofing solution.
Cladding and Siding: Enhance the aesthetics and durability of buildings with our galvanised steel sheet used as cladding and siding. Whether for residential, commercial, or industrial structures, its smooth surface and protective coating add visual appeal and weather resistance to exteriors.
Structural Components: Our sheet serves as a reliable material for structural components such as beams, columns, and trusses. Its strength and durability make it suitable for load-bearing applications where structural integrity is essential.
Decorative Features: Explore creative possibilities in architectural design with our galvanised steel sheet. Whether used for decorative panels, facades, or architectural accents, its customizable finish and durability add character and style to interior and exterior spaces.
In summary, our 1.5mm Galvanised Steel Sheet offers unmatched durability, protection, and versatility for galvanized sheet metal roofing and other construction applications. Choose reliability, choose durability – choose our galvanised steel sheet for superior performance and longevity in your next project.
GI Sheet Material Types
The commonly used galvanized steel grades are:
Commercial Sheet (CQ);
Forming Steel;
GI Sheet for Structural Use (HSLA);
Deep Drawing Steel Sheet (DDQ);
Extra Deep Drawing Steel (EDDS), etc.
How to Calculate GI Sheet Weight?
The GI sheet weight follows the calculation formula: W= Thickness (mm) * Width (m) * Length (m) * 7.85 (Density of steel = 7.85 kg/m3) + zinc layer weight
Taking gauge 18 GI sheets (G90) for example, the thickness is about 1.31 mm. The zinc layer is about 275 g/m2. So the galvanized sheet weight per square meter is about 10.58 kg. You can roughly get the weight. If your galvanized sheet is 0.7 mm in thickness, 1.2 m in width, and 2.5 m in length, the weight is about 16.5 kg/piece (0.7*1.2*2.5). If you order 50 tons, there will be about 3,000 pieces. You can estimate how many GI sheets are needed for your project easily.
| SPECIFICATION PARAMETER | |
| Commodity | Galvanized Steel Sheet |
| Grade | Q195, Q235 |
| SGCC, SGCH, SGC340, SGC400, SGC440, SGC490, SGC570 | |
| SGHC, SGH340, SGH400, SGH440, SGH490, SGH540 | |
| DX51D, DX52D, DX53D, DX54D | |
| S220GD, S250GD, S280GD, S320GD, S350GD, S400GD, S500GD, S550GD | |
| Standard: | AISI, ASTM, BS, DIN, GB, JIS |
| Zinc coated: | 30 g/m2-275 g/m2 |
| Spangle | Zero spangles (0.12-2.0 mm), 0.7-4 mm with small spangles, regular (big) spangles |
| Surface treatment | Chromated, oiled and anti-fingerprint |
| Thickness | 0.12-4.0mm |
| Width | 600-2000mm |
| Supply Ability | 40000MT/month |
| MOQ | 5MT |
| Packaging | Export standard, seaworthy |
| Substrate | Cold rolled, Hot rolled |
| ID | 508mm or 610mm |
| Certificates | SGS, BV, ISO 9001 |
| Trade Term | FOB, CFR, CIF |
| Payment terms | T/T, L/C at sight, West Union, D/P, D/A, Paypal |
| Delivery time | 14days after confirmed order |
| Loading port | Tianjin port |
| Container size | 20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft GP: 12032mm(Length)x2352mm(Width)x2393mm(High) | |
| 40ft HC: 12032mm(Length)x2352mm(Width)x2698mm(High) | |
| Galvanized Steel Sheet Gauge Chart | ||
| Gauge | mm | Inches |
| 8 | 4.27 | 0.1681 |
| 9 | 3.89 | 0.1532 |
| 10 | 3.51 | 0.1382 |
| 11 | 3.13 | 0.1233 |
| 12 | 2.75 | 0.1084 |
| 14 | 1.99 | 0.0785 |
| 16 | 1.61 | 0.0635 |
| 18 | 1.31 | 0.0516 |
| 20 | 1.01 | 0.0396 |
| 21 | 0.93 | 0.0366 |
| 22 | 0.85 | 0.0336 |
| 23 | 0.78 | 0.0306 |
| 24 | 0.7 | 0.0276 |
| 25 | 0.63 | 0.0247 |
| 26 | 0.55 | 0.0217 |
| 27 | 0.51 | 0.0202 |
| 28 | 0.47 | 0.0187 |
| 30 | 0.4 | 0.0157 |
| Standard | GB/T 2518 | EN10346 | JIS G 3141 | ASTM A663 |
| Grade | DX51D+Z | DX51D+Z | SGCC | CS Type C |
| DX52D+Z | DX52D+Z | SGCD1 | CSTypeA.B | |
| DX53D+Z | DX53D+Z | SGCD2 | FS Type A, B | |
| DX54D+Z | DX54D+Z | SGCD3 | DDS Type C | |
| S250GD+Z | S250GD+Z | SGC340 | SS255 | |
| S280GD+Z | S280GD+Z | SGC400 | SS275 | |
| S320GD+Z | S320GD+Z | - | - | |
| S350GD+Z | S350GD+Z | SGC440 | SS340 Class4 | |
| S550GD+Z | S550GD+Z | SGC590 | SS550 Class2 |
Hot-dip Galvanized Steel Sheet
Hot-dip galvanized sheet is made by immersing the steel sheet in a molten zinc bath at about 500 °C to attach a zinc layer to the surface. This is the continuous galvanizing process. It will form a protective zinc layer on the surface so that it has good paint adhesion and weldability. It is the most widely used and cost-effective method to prolong the service life of steel sheets. .
Electro-galvanized Steel Sheet
Electro-galvanizing, also known as cold galvanizing, uses electrolysis to form a uniform and dense layer on the surface of the metal. The anti-corrosion zinc layer can protect steel parts from oxidation corrosion. Also, it can meet decorative purposes. But the zinc layer of the electro-galvanizing steel sheet is only 5-30 g/m2. So its corrosion resistance is not as good as hot-dip galvanized sheets.
Difference Between Hot-Dip and Electro-galvanized Steel Sheets
Anti-corrosion
The zinc coating thickness is one of the most important factors matters corrosion resistance. The greater the zinc layer thickness, the better the corrosion resistance. Generally, the thickness of hot-dip zinc coating is more than 30 g/m2, or even as high as 600 g/m2. While the electro-galvanized zinc layer is only 5~30 g/m2 thick. So the former steel sheet is much more corrosion resistant than the latter one. At Wanzhi Steel, the maximum zinc layer is 275 g/m2 (z275 galvanized steel sheet).
Method of Operation
The hot-dip galvanized steel sheet is galvanized in a molten zinc bath at about 500 degrees, while the electro-galvanized steel sheet is processed at room temperature by electroplating or other methods. That's why electro-galvanizing also refers to the cold galvanizing process.
Surface Smoothness & Adhesion
The surface of the electro-galvanized steel sheet looks smoother than hot-dip galvanized sheets. But its adhesion is not as good as that of the hot-dip galvanized sheet. If you want only one side galvanized, you can choose the electroplating method. However, if adopting hot-dip galvanizing, both sides are coated with a zinc layer fully.
Types of GI Sheets
In terms of the manufacturing process, we divide it into hot-dip galvanized steel sheets and electro-galvanized steel sheets. Hot-dip galvanized sheet is mainly used in construction, home appliances, automobiles, light industry, and other industries. Below are more details for your reference.
