JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
| Payment Terms | L/C, T/T, Western Union |
| Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity |
| Packaging Details | standard packing for export |
| Products | galvanized steel coil |
| Thickness | 0.3 - 3.0mm |
| Width | 1000mm 1250mm 1500mm or as request |
| Surface | regular spangle, zero spangle |
| Zinc coating | Z40 - Z275 |
| Brand | BAOSTEEL ANSTEEL |
| Service | cutting |
| Coil ID | 508mm |
| Brand Name | BAOSTEEL WISCO |
| Model Number | DX51D SGCC |
| Certification | ISO |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T, Western Union | Supply Ability | 20Ton per week |
| Delivery Time | 5 - 12 days based on the quantity | Packaging Details | standard packing for export |
| Products | galvanized steel coil | Thickness | 0.3 - 3.0mm |
| Width | 1000mm 1250mm 1500mm or as request | Surface | regular spangle, zero spangle |
| Zinc coating | Z40 - Z275 | Brand | BAOSTEEL ANSTEEL |
| Service | cutting | Coil ID | 508mm |
| Brand Name | BAOSTEEL WISCO | Model Number | DX51D SGCC |
| Certification | ISO | Place of Origin | China |
| High Light | galvanized coil ，galvanised steel coil ，galvanized sheet coil | ||
AZ150 Aluzinc Galvalume Steel Zinc Aluminized sheet coil Thickness 0.3 - 3.0mm Small Spangle
| Product Name | Hot Dipped Galvalume Steel Coil |
| Thickness | 0.12-8.0mm ( One of few suppliers in China who can produce thick coils up to 8.0mm) |
| Width | Within 2000mm (Have unique strength on 1500-2000mm in China) |
| Base steel | Cold rolled/Hot rolled |
| Zinc Coating | AZ30~AZ1200 (High coating) |
| Coil Inner Diameter | 508/610mm |
| Spangle | Big/Small/Zero |
| Payment | L/C, T/T, / Alibaba Trade Assurance ( USD, EURO, RMB ) |
| Packing | Mill's standard export sea-worthy packing |
| No tricks | Never steal zinc coating, never short weight |
| High Capacity | 10,000 MT per month |
| Efficient Service | Respond your inquiry within 5 minutes |
| Professional Shipment | Very professional both in sea freight and door to door service |
Galvalume steel refers to 55% Al-Zn coated steel products, which is also called aluzinc steel. GL steel is well suited for roofing and siding applications, as well as automotive, home appliances, furniture, etc. Due to its versatility, durability, beautiful appearance, galvalume steel is favored broadly. If you are looking for a galvalume steel factory (GL), please contact Wanzhi Steel right now.
Wanzhi Steel has both GL coils and sheets for sale, which are available from AZ30 to 150. The thickness is from 0.12 to 1.2 mm and the width is from 600 to 1,250 mm. More than that, we also offer cutting, slitting, and profiling services. Welcome to contact us for samples or visit our factory on-site.
| Item | Galvalume Steel |
| Material | DX51D+AZ, DX52D+AZ, DX53D+AZ, S220GD-S550GD |
| Al-Zn Coating | AZ30-AZ150 |
| Thickness | 0.13 mm-1.2 mm |
| Width | 600-1,250 mm |
| Coil Weight | 3-8 tons or as per your requirements |
| Aluminum Content | 55% |
| Package | Standard Export Package |
Galvalume steel is similar to galvanized steel. It uses cold-rolled steel sheet as a substrate and then is coated with 55% aluminum, 43.4% zinc, and 1.6% silicon at 600 °C. While galvalume coating aims to protect steel from oxidation. Due to the protection of aluminum, it is better able to resist rusting and corrosion. If the coating thicknesses of GL steel and GI steel are equal, the GL one will be more long-lasting to use in the same environment. The common manufacturing process is known as the hot-dipping process. Let’s review step by step.
1. Pre-treatment
Through the pre-treatment system, the contaminants on the surface of the base metal will be removed. It often includes degreasing, rinsing, pickling, etc.
2. Hot-dip Galvalume Process
After going through the annealing furnace, steel sheets are dipped into the Al-Zn pool. Then there is an air knife to remove the extra coating to keep the thickness of the coating.
3. Inspection & Coiling
The coated steel sheet will go through the quality control system and then be rolled up for sale.
So the structure of Galvalume steel includes:
| Chinese Code | European Code | American Code | Japanese Code |
| DC51D+AZ | DX51D+AZ | CS type B, type C | SGLCC |
| DC52D+AZ | DX52D+AZ | DS | SGLCD |
| S250GD+AZ | S250GD+AZ | 255 | – |
| S300GD+AZ | – | – | – |
| S350GD+AZ | S350GD+AZ | 345 Class1 | SGLC490 |
| S550GD+AZ | S550GD+AZ | 550 | SGLC570 |
The bare galvalume sheet is silver-white in color, with regular spangles. It looks not bright and shiny as a galvanized sheet, but its surface is more smooth. You can check the pictures below.
As for corrosion resistance, galvalume is better than galvanized steel. GI and GL steel are very similar. Both of them are coated to protect the base metal from rust. The coating allows metal panels to last decades longer than non-coated metal. Essentially, GL steel is 55% aluminum to 43.4% zinc, and 1.6% silicon alloy coated sheet steel. While GI is coated with a zinc layer. Al-Zn coating combines the toughness of zinc with the rust resistance of aluminum and provides barrier protection on the metal surface. It performs better in fighting corrosion than zinc coating. However, if the zinc coating is scratched, it can continue to corrode. So the service life of GL steel will be longer than that of GI steel. Also, GL steel has better heat resistance so that it is more suitable for home appliances.
Generally speaking, galvalume steel will be more expensive. For example, for the same specification, AZ50 galvalume steel will be more expensive than G50 galvanized steel. But GL steel also has a longer service life. Moreover, the price is also influenced by other factors, such as the thickness, width, packaging, etc. And they are suitable for different environments. Welcome to contact us for a free quote.
Ga (gauge) is commonly used to describe the thickness of metal sheets or wires. In general, the higher the number, the thinner the sheet. For example, a 24 gauge GL sheet is about 0.7 mm in thickness; while a 26 gauge galvalume sheet is about 0.55 mm in thickness. And a 29 gauge galvalume steel sheet is about 0.45 mm in thickness. You can check the gauge chart below.
| Materials | Stainless Steel | GI/GL | Aluminum |
| Gauge | inches (mm) | inches (mm) | inches (mm) |
| 30 | 0.0125 (0.33) | 0.0157 (0.40) | 0.0100 (0.25) |
| 29 | 0.0141 (0.36) | 0.0172 (0.44) | 0.0113 (0.29) |
| 28 | 0.0156 (0.41) | 0.0187 (0.47) | 0.0126 (0.32) |
| 27 | 0.0172 (0.43) | 0.0202 (0.51) | 0.0142 (0.36) |
| 26 | 0.0187 (0.48) | 0.0217 (0.55) | 0.0159 (0.40) |
| 25 | 0.0219 (0.56) | 0.0247 (0.63) | 0.0179 (0.46) |
| 24 | 0.025 (0.64) | 0.0276 (0.70) | 0.0201 (0.51) |
| 23 | 0.0281 (0.71) | 0.0306 (0.78) | 0.0226 (0.58) |
| 22 | 0.0312 (0.79) | 0.0336 (0.85) | 0.0253 (0.64) |
| 21 | 0.0344 (0.86) | 0.0366 (0.93) | 0.0285 (0.71) |
| 20 | 0.0375 (0.95) | 0.0396 (1.01) | 0.0320 (0.81) |
| 19 | 0.0437 (1.1) | 0.0456 (1.16) | 0.0359 (0.91) |
| 18 | 0.0500 (1.27) | 0.0516 (1.31) | 0.0403 (1.02) |
| 17 | 0.0562 (1.4) | 0.0575 (1.46) | 0.0453 (1.1) |
| 16 | 0.0625 (1.59) | 0.0635 (1.61) | 0.0508 (1.29) |
| 15 | 0.0703 (1.8) | 0.0710 (1.80) | 0.0571 (1.4) |
| 14 | 0.0781 (1.98) | 0.0785 (1.99) | 0.0641 (1.63) |
| 13 | 0.094 (2.4) | 0.0934 (2.37) | 0.072 (1.8) |
| 12 | 0.1094 (2.78) | 0.1084 (2.75) | 0.0808 (2.05) |
| 11 | 0.1250 (3.18) | 0.1233 (3.13) | 0.0907 (2.30) |
| 10 | 0.1406 (3.57) | 0.1382 (3.51) | 0.1019 (2.59) |
| 9 | 0.1563 (3.97) | 0.1532 (3.89) | 0.1144 (2.91) |
| 8 | 0.1719 (4.37) | 0.1681 (4.27) | 0.1285 (3.26) |
The service life of Al-Zn steel is about 40-60 years. Actually, it mainly depends on the thickness of the galvalume coating, as well as the use environment. When galvalume roofing is installed in the right environment, they are able to last decades.
Galvalume steel has strong corrosion resistance. But galvalume steel is actually a kind of iron steel. So it will rust finally when the protective coating is broken. It often rusts from the cut edge. Because the galvalume coating is made with less zinc, the anodic protection is poor. When a certain point of the GL sheet is corroded, the rusted area will spread over the entire surface.
Of course. The galvalume coating has great adhesion, which makes it easy to paint. You can paint it with different colors for decorative or aesthetic purposes, like PPGL steel.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
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