Product description:
Galvanized steel sheet refers to steel sheet with aluminum (passivation protection) added on the basis of galvanizing. The general composition is 55% aluminum, 43.5% zinc, and 1.5% silicon. It has excellent atmospheric corrosion resistance. The corrosion resistance is galvanized sheet. It also has the high temperature corrosion resistance of aluminum sheet, smooth surface and good appearance, but its coating formability and weldability are slightly worse.
Uses: building roofs, walls, electrical cabinets, home appliances, automobiles, color coating substrates, etc.
Product description:
Alu-zinc coated coil is based on cold-rolled steel sheet, which is solidified at 600℃ with 55% aluminum, 43.4% zinc, and 1.6% silicon. It combines the physical protection and high durability of aluminum and the electrochemical protection of zinc. It is also called galvanized steel coil.
The production process of galvanized steel is as follows:
Uncoil - cleaning - annealing - zinc pot - cooling - air knife - straightening - post-processing - coiling
Heat reflection
People use it as a heat insulation material, and its heat reflectivity is up to twice that of galvanized steel sheet.
Heat resistance
Alu-zinc steel coil has good heat resistance and can withstand high temperatures above 300℃, which is very similar to the oxidation resistance of aluminum-coated steel sheet at high temperatures. It is often used in chimney pipes, ovens, luminaires, fluorescent lampshades, etc.
Corrosion resistance
The key to the corrosion resistance of galvanized steel coil lies in the protective properties of aluminum. Once zinc is worn, aluminum will form a dense layer of aluminum oxide to prevent further corrosion inside.
Economy
The density of 55% AL-Zn is smaller than that of Zn, so the area of galvanized steel sheet is 3% larger than that of galvanized steel sheet under the same coating weight and thickness.
Easy to paint
The coating material on galvanized steel sheet has excellent adhesion and can be directly tarred on advertising boards and commonly used sheets without pretreatment such as weathering.
Application:
Construction industry: such as roofs, interior and exterior wall panels, soundproof walls, pipes, garages, etc.
Automotive industry: such as mufflers, exhaust pipes, wiper accessories, fuel tanks, truck containers, etc.
Household appliances: such as refrigerator back panels, air conditioners, microwave ovens, LED backlights, electrical cabinets, etc.
Agricultural uses: such as greenhouses, granaries, pig farms, chicken houses, etc.
Other industries: such as heat exchangers, dryers, etc.
Product specification:
Standard |
JIS / EN / ASTM Standard |
Grades |
SGLCC / SGL400 / SGL440 / SGL570 / SGLCD |
ASTM A792M CS-A / CS-B / CS-C |
|
SS230 / SS255 / SS275 / SS340 / SS550 |
|
DX51D / DX52D / DX53D |
|
S220GD / S250GD / S280GD / S320GD / S350GD / S550GD |
|
Coating |
AZ40-AZ150 |
Spangle |
Regular Spangle |
Sizes |
Thickness: 0.23mm - 3.0mm Width: 900mm-1250mm,or customer's requirement |
Surface treatment |
Chromate Treatment, Anti-fingerprint |
Chemical composition:
Al |
Zn |
Si |
Fe |
Cu |
Cd |
Pb |
Sn |
Ni |
Ti +Ba+Cr |
55-58 |
41-43 |
1.5-2 |
0.25 |
0.03 |
0.05 |
0.01 |
0.05 |
0.05 |
0.05 |
Mechanical property:
Grade |
Yield Strength MPa≥ |
Tensile Strength MPa≥ |
Elongation A%≥ |
DX51D+Z/ZM/AZ/AM |
240-380 |
270-500 |
22 |
DX52D+Z/ZM/AZ/AM |
140-300 |
270-420 |
26 |
DX53D+Z/ZM/AZ/AM |
140-260 |
270-380 |
30 |
DX54D+Z/ZM/AZ/AM |
120-220 |
260-350 |
36 |
S220GD+Z/ZM/AM |
220 |
300 |
20 |
S250GD+Z/ZM/AZ/AM |
250 |
330 |
19 |
S280GD+Z/ZM/AM |
280 |
360 |
18 |
S300GD+AZ/AM |
300 |
380 |
18 |
S320GD+Z/ZM/AM |
320 |
390 |
17 |
S350GD+Z/ZM/AZ/AM |
350 |
420 |
16 |
S450GD+AZ/AM |
450 |
480 |
15 |
S550GD+Z/ZM/AZ/AM |
550 |
550 |
- |
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Quality inspection process
FAQ:
Q1:Can you send samples?
A:Of course, we can provide customers with free samples.
Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.
Q5:Can you accept customize?
A: Yes. It can be customized as per the customers' request.
Q6:What are the certifications for your products?
A:We have ISO 9001, MTC, ISO14001,third parties’ inspections are all available such SGS, BV ect.
Q7:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q8: How many countries you already exported to?
A:We have exported to Canada, Russia, Belarus, Poland, Brazil, Mexico, Colombia, Ecuador, Peru, Iran, Vietnam, Malaysia, UAE, Nigeria and other countries. Our export experience is rich, we are familiar with different market needs, can help customers avoid a lot of trouble.
Q9:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q10:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
Q11:How to pack the products?
A: Standard export sea-worthy packaging, the inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet.It can effectively protect products from corrosion and various climate changes during ocean transportation.
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