Aluminum Cold Rolled Coil for Roofing from China

Aluminum Cold Rolled Coil for Roofing from China System 1

Aluminum Cold Rolled Coil for Roofing from China System 2

Aluminum Cold Rolled Coil for Roofing from China

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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Series:	1100 etc.
Series:	3003 3004 3005 etc.
Series:	5006, 5052
Series:	8011 etc.

Plate Thickness	0.1mm, 0.12mm,0.15mm,0.20mm,0.25mm,0.28mm,0.3mm,0.35mm,0.38mm, 0.4mm,0.5mm, 0.53mm, 0.58mm,0.68mm,0.7omm,0.73mm,0.75mm, 0.90mm, 1mm, 1.2mm
Coil Thickness	0.1mm, 0.12mm,0.15mm,0.20mm,0.25mm,0.28mm,0.3mm,0.35mm,0.38mm, 0.4mm,0.5mm, 0.53mm, 0.58mm,0.68mm,0.7omm,0.73mm,0.75mm, 0.90mm, 1mm, 1.2mm

Item	Test Item	Standard	National Standard	Test Result
1	Color Difference	ECCA T3	Delter E≤2.0	Delter E≤1.0
2	Gloss Difference	ECCA T2	≤10	≤5
3	Coating Thickness	ECCA T1	Two coating Min 23 mircron	≥25 micron
Three coating Min 30 micron	≥34 micron
4	Pencil Hardness	ASTM D3363	≥HB	HB
5	T-Bend	ASTM D4145	≤2T	≤2T
6	Adhesion	ASTM D3359	Grade 0	Grade 0
7	Impact	ASTM D2794	≤50kg.cm	≤50kg.cm
8	Boiling Water Resistance	GB/T17748	2hr no change	4hr no change
9	Slovent Resistance	ASTM D2248	200 times paint remaining	500 times paint remaining
10	Acidity Resistance	ASTM D1308	5% HCL 24hrs no change	no change
11	Alkali Resistance	ASTM D1308	5% NAOH 24hrs Delter E≤2.0	no change
12	Nitric Acid Resistance	AAMA620	Delter E<5.0	Delter E<5.0
13	Oil Resistance	ASTM D1308	20# oil 24hrs no change	no change
14	Salt Spray Resistance	ASTM B117	4000hrs≤Grade 1	no change
15	Abrasion Resistance	ASTM D968	≥5L/Micron	≥5L/Micron
16	Contamination Resistance	GB/T9780	≤5%	<5%
17	Color Resistance	GB/T16259	4000hrs Delter E≤4.0	4000hrs Delter E≤3.0
18	Gloss Losing Level	4000hrs Delter E≤Grade 2	4000hrs Delter E≤Grade 2
19	Chalking	4000hrs no change	4000hrs no change

Company Information

CNBM is in aluminum foil, coil, sheet, plate for more than 10 years, thus we have rich product, technology and market experiences. With the world’s top aluminum processing equipments, experienced technical staff, cooperative and professional sales team, and the enterprise concept of responsibility and sharing, we have been widely focused since the day set up, and has gained high praise from customers home and abroad until now.

Cold Rolled Aluminum Coil for Roofing from China

Our Services

CNBM is ready to assist with any product needs or enquiries. We value our customers and welcome your thoughts and feedback.

Please send comments, questions and requests through alibaba or our personal contact so they can be directed to the appropriate department.

About samples: Based on our company rules, a few samples are willing to be offered, but clients are requested to pay freight.

Working time:9:00~17:30(GM+8) from Monday to Friday, but you also can contact with us via personal contact information during our leisure time. We will try our best to offer you service in 24*7 hours.

Any quality, quantity problems are occured, response you will get in time not over more 24 hours after we recieve your complains. Problems will be solved in one week throught friendly negotiation.

Cold Rolled Aluminum Coil for Roofing from China

Q: Is it possible to recycle aluminum within the context of car battery recycling facilities?: Yes, aluminum can be recycled in a car battery recycling facility. Car batteries contain aluminum components, and recycling facilities are equipped to separate and recycle aluminum from other materials. The process typically involves disassembling the batteries, separating the aluminum casings from the lead acid, and then melting the aluminum for reuse. This not only conserves resources but also reduces the environmental impact of battery waste.

Q: Is it possible to utilize aluminum in the construction of automobiles?: Yes, aluminum is widely used in automobiles due to its lightweight, high strength, and excellent corrosion resistance. It is commonly found in engine components, body panels, and wheels. The use of aluminum can lead to reduced vehicle weight, which improves fuel efficiency and reduces emissions. Additionally, aluminum's recyclability makes it an environmentally friendly choice for automotive manufacturing.

Q: Is it possible to recycle old aluminum products and use them to create new aluminum products?: Yes, old aluminum products can be recycled and reused to make new ones. Recycling aluminum is a highly efficient process that conserves resources and energy. The recycling process involves melting down the old aluminum, which requires significantly less energy compared to extracting aluminum from raw materials. This makes aluminum one of the most recycled materials in the world, with a closed-loop recycling system that allows for continuous reuse without significant loss in quality.

Q: Explain how the use of aluminum contributes to global warming in a few sentences.: The use of aluminum significantly affects global warming due to the energy-intensive process required to extract it from bauxite ore. The production of aluminum releases large amounts of greenhouse gases, particularly carbon dioxide, which contribute to global warming. Additionally, the electricity used in aluminum production often comes from fossil fuels, further exacerbating the issue. Moreover, aluminum is lightweight and durable, leading to increased demand, which in turn drives up production and emissions. The recycling of aluminum is crucial to mitigate its environmental impact, as it requires only 5% of the energy needed for primary production, significantly reducing carbon emissions.

Q: Explain the interaction between aluminum and oxygen.: Aluminum and oxygen have a reactive relationship. When aluminum is exposed to oxygen, it forms a thin, protective layer of aluminum oxide on its surface. This oxide layer prevents further oxidation of the aluminum beneath it, making aluminum a corrosion-resistant metal. The reaction is exothermic and can be represented by the chemical equation: 4Al + 3O2 鈫?2Al2O3. This aluminum oxide layer is hard and stable, which is why aluminum is widely used in various applications where resistance to corrosion is important.

Q: Is aluminum a suitable material for use in solar panels?: Yes, aluminum is commonly used in solar panels, primarily for framing and mounting purposes. It is a lightweight, durable, and cost-effective material that provides structural support and protection against environmental elements. While the photovoltaic cells themselves are typically made from silicon, aluminum's role in the assembly is crucial for the overall performance and longevity of the solar panel system.

Q: This question asks about the reactivity of aluminum with various substances, including its chemical reactions and properties.: Aluminum is a highly reactive metal that readily reacts with oxygen to form a protective layer of aluminum oxide on its surface. It can also react with acids, such as hydrochloric or sulfuric acid, to produce hydrogen gas and aluminum salts. In the presence of a strong base, aluminum can react to form aluminates and hydrogen gas. Additionally, aluminum can reduce certain metal oxides, such as iron oxide, in a thermite reaction. However, due to its reactivity, aluminum is often used in alloys with other metals to improve its strength and corrosion resistance.

Q: Is it safe to use pure aluminum for baking or roasting food in a traditional oven or grill?: While pure aluminum is a common material in cookware, it's not recommended for direct use in baking or roasting food in a traditional oven or grill. Aluminum can react with acidic foods, potentially leaching aluminum into the food. Additionally, aluminum foil can burn and create a hazardous situation. For baking or roasting, it's safer to use materials specifically designed for these purposes, such as parchment paper, silicone baking mats, or oven-safe dishes.

Q: This question asks about the impact of aluminum on human health when it is consumed through food packaging.: Aluminum is commonly used in food packaging due to its lightweight and durability. However, concerns have been raised about its potential health effects. Aluminum can leach into food, especially in acidic conditions, and be ingested by humans. While the body naturally excretes some aluminum, excessive intake may lead to accumulation, particularly in the brain, bones, and kidneys. Long-term exposure has been linked to neurological disorders, including Alzheimer's disease, and may contribute to bone diseases. However, the scientific consensus is not definitive, and more research is needed to establish a clear causal link. It's important to note that the risk is generally considered low for most people, but it's advisable to minimize exposure, especially for vulnerable populations like infants and those with kidney issues.

Q: Is it possible to recycle aluminum in a landfill setting?: Aluminum can be recycled, but not in a landfill. Landfills are not designed for recycling; they are for waste disposal. Aluminum recycling typically occurs at specialized facilities where the metal is sorted, cleaned, and processed. Landfills can contaminate aluminum with other materials, making it unsuitable for recycling. Proper recycling of aluminum conserves resources and energy, and it's crucial to recycle aluminum through appropriate channels rather than disposing of it in landfills.

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