Prepainted Rolled Steel Coil for Construction roofing Constrution
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 30000 m.t./month
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Structure of Prepainted Rolled steel Coil for Construction Roofing
Description of Prepainted Rolled steel Coil for Construction Roofing
Prepainted Rolled steel Coil is a kind of coated steel coil/sheet. With the cold rolled steel of different strength and thickness as substrate, it is produced through applying Al-Zn coat on both faces by hot dip process. In its coating, Al accounts for about 55%, Si 1.6%, while the remaining is Zn. Aluminum zinc coils enjoys both the physical protective feature and durability of Al and the electrochemical protective property of Zn. And its surface has bright silver color and regular embossed-like figure, which are highly decorative.
Main Feature of Prepainted Rolled steel Coil for Construction Roofing
1.Corrosion resistance: It mainly depends on the aluminum protection. When the zinc being worn, the aluminum will form a dense layer of aluminum oxide, resist corrosion material to prevent further corrosion inside.
2. Heat resistance: Aluminum zinc alloy steel sheet has excellent heat resistance, can withstand high temperatures over 300 centigrade, and is similar with aluminized steel high temperature oxidation resistance. It often used in chimney pipes, ovens, fluorescent lighting device and the device cover.
3. Heat reflective: Galvanized steel plate heat-reflective high rate is twice as galvanized steel, often used to make insulation materials.
4. Economy: Because density of 55% AL-Zn is smaller than the density of Zn, so in the same weight and thickness of Galvanized zinc layer, aluminum-zinc steel plate is larger area more than 3% of galvanized steel sheet.
Applications of Prepainted Rolled steel Coil for Construction Roofing
1. Construction and building: roofing; ventilating duct; handrail; partition panel;etc.
2. Electric appliance: refrigerator; washing machine; refrigerator; DVD;etc.
3.Transportation: oil tank; road sign; etc.
4.Agriculture:barn; etc.
5.Others:vending machine; game machine; etc.
Specifications of Rolled steel Coil for Construction Roofing
Product | Prepainted Rolled steel Coil for Construction Roofing |
Material Grade | SGCC / SGCH / DX51D+AZ, etc |
Thickness | 0.2-3.0mm |
Width | 600-1500mm |
Tolerance | Thickness: +/-0.02mm , Width:+/-2mm |
Zinc-coating | AZ40-150g/m2 |
Technique | Raw material: Hot rolled steel coil --> Cold rolled_>hot dipped galvalume |
Surface | Dried, Chromated, Unoiled |
Spangle | Regular spangle , small spangle, zero spangle |
ID | 508MM |
Coil weight | 10MT max |
Export package | Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed |
FAQ of Prepainted Rolled steel Coil for Construction Roofing
We have organized several common questions for our clients，may help you sincerely：
1. What is the minimum order quantity ?
Our MOQ is 50mt for each size. And we will consider to give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your offer the better price we can provide.
2. How long can we receive the product after purchase?
Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-25 days, but the shipment will depend on the vessel situation.
3. How to guarantee the quality of the products？
We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.
- Q: What is the role of steel coils in HVAC systems?
- Steel coils are an essential component in HVAC systems as they act as heat exchangers, allowing for efficient transfer of heat between the refrigerant and the surrounding air. They help to cool or heat the air as it passes through the system, contributing to the overall temperature control and comfort in indoor spaces.
- Q: What are the different types of steel coil coatings for corrosion resistance?
- Steel coil coatings can be classified into two main types: organic coatings and metallic coatings. 1. Organic coatings are commonly used for steel coil applications due to their excellent corrosion resistance and durability. There are four types of organic coatings: - Polyester coatings: These coatings offer good weatherability and resistance to chemicals, making them suitable for outdoor applications. - PVDF coatings: These coatings are highly resistant to UV radiation, weathering, and chemicals. They provide exceptional durability and are often used in demanding environments such as coastal areas or industrial settings. - Polyurethane coatings: These coatings offer excellent abrasion resistance and a high level of corrosion protection. They are commonly used in applications where there is a higher risk of mechanical damage or exposure to harsh conditions. - Epoxy coatings: These coatings provide excellent adhesion and chemical resistance. They are often used in industrial applications where resistance to chemicals, solvents, and oils is required. 2. Metallic coatings provide effective corrosion protection and can be further divided into two types: - Galvanized coatings: These coatings involve applying a layer of zinc to the steel surface through a hot-dip or electroplating process. This creates a barrier between the steel and the surrounding environment, providing effective corrosion protection. Galvanized coatings are widely used in various industries due to their cost-effectiveness and good durability. - Galvannealed coatings: These coatings are similar to galvanized coatings but undergo an additional heat treatment process. This results in a coating with increased hardness and improved paint adhesion, making it suitable for applications that require additional surface protection or paintability. When selecting the appropriate steel coil coating, it is essential to consider the specific requirements of the application and the level of corrosion resistance needed. Consulting with coating manufacturers or industry experts can help determine the most suitable coating for a particular application.
- Q: What are the different methods of recoiling steel coils?
- Depending on the specific requirements and characteristics of the material, there are several methods employed for recoiling steel coils. Some commonly used techniques include: 1. Slitting: This method entails cutting the steel coil into narrower strips, which can then be recoiled. Rotary knives or circular saws are typically utilized in the slitting process, allowing for precise control over the width. 2. Rewinding: This approach involves unwinding the steel coil and subsequently rewinding it onto a new coil mandrel. It is commonly employed when resizing the original coil is necessary or when reconditioning a damaged coil. 3. Recoiling with a tension control system: This method passes the steel coil through a series of tension control rollers that apply a controlled amount of tension to the material. Consequently, the recoiling process is smooth and even, minimizing the risk of coil distortion or damage. 4. Recoiling with a slitter head: Combining the slitting and recoiling processes, this method employs a slitter head to simultaneously cut the steel coil into narrower strips and rewind them onto separate coils. 5. Recoiling with a looping pit: This technique involves feeding the steel coil through a looping pit, allowing for the accumulation of material as the coil is recoiled. This helps maintain a consistent line speed and tension throughout the recoiling process. Each of these methods possesses distinct advantages and is suitable for various applications. The choice of recoiling method depends on factors such as desired coil dimensions, material thickness and strength, and the required level of precision and quality.
- Q: if steel is heated from room temperature (20c) to (500c) what would be the change in density?coefficient for linear expansion of steel 12x10^-6 k density of steel 7800 kg
- First you have to convert the coefficient of linear expansion to a coefficient of volumetric expansion. Multiply the coefficient of linear expansion by 3: Coefficient of expansion of steel,β:12E-6/°K x 3 = 36E-6/°K Difference in temperature: 480°K ΔV = VoβΔT ΔV = Vo x (0.000036) x 480 ΔV = 1m? x 0.017 ΔV = 0.017m? Originally, the steel was at 7800 kg/m? Now, the steel was at 7800 kg/ 1.017m?, or 7670 kg/m? Change in density = 7670 - 7800 = -130kg/m?
- Q: What is the maximum diameter of a steel coil?
- The maximum diameter of a steel coil can vary depending on the specific manufacturing process and equipment used. However, in general, the maximum diameter of a steel coil can range from a few inches to several feet.
- Q: How can steel coils be recycled?
- Steel coils can be recycled by first removing any non-steel materials attached to them, such as plastic or rubber. The coils are then shredded into smaller pieces and sent to a steel mill, where they are melted down and transformed into new steel products. This process helps conserve natural resources, reduces energy consumption, and minimizes waste.
- Q: What is the maximum stacking height for steel coils?
- The maximum stacking height for steel coils depends on various factors such as the size and weight of the coils, as well as the strength and stability of the storage facility. Generally, it is recommended to stack steel coils up to a height of 3 to 5 coils, ensuring proper weight distribution and stability to prevent damage or accidents.
- Q: They say it's some six times stronger than steel. need some explanation.
- Most importantly, spider silk is extremely lightweight: a strand of spider silk long enough to circle the Earth would weigh less than 500 grams (18 oz). Spider silk is also especially ductile, able to stretch up to 140% of its length without breaking. It can hold its strength below ?40 °C. This gives it a very high toughness (or work to fracture), which equals that of commercial polyaramid (aromatic nylon) filaments, which themselves are benchmarks of modern polymer fiber technology. What this means in regard to what you have heard is that if you compared the tensile strength (type 'tensile strength' on wikipedia if you do not know what it means) of spider silk and a strand of steel at the same thickness, the silk would have a higher tensile strength than many grades of steel, upto that of high grade steel - of which they are about the same.
- Q: What are the different types of steel coil finishes?
- There are several different types of steel coil finishes, including hot rolled, cold rolled, galvanized, and coated finishes.
- Q: iam talking abt carbon steel of composition:-C=0.15wt% Mn=0.60wt% P=0.035wt% S=0.04wt% Cu=0.20 (min)wt%....
- The composition of the steel is almost tertiary to many other considerations, except that there are certain elements and percentages of elements which tend to affect the crystaline structure in the steel. The most basic question is whether the crystaline arrangement of atoms in the steel is martensitic or austenitic, and many factors influence that. In general, martensitic structure is magnetic and austenitic structure doesn't respond much to magnetic fields, but there are varying degrees of martensitic and austenitic -- there is never a pure state. Read the articles at bottom.
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Prepainted Rolled Steel Coil for Construction roofing Constrution
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 30000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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