ASTM Z70 Prepainted Rolled Steel Coil for Construction Roofing
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 28000 m.t./month
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Structure of ASTM Z70 Prepainted Rolled Steel Coil for Construction Roofing
Description of ASTM Z70 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 ASTM Z70 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 ASTM Z70 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 ASTM Z70 Prepainted 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 | 25MT max |
Export package | Cardboard inner sleeves, Waterproof paper, galvanized steel covered and steel strip packed |
FAQ of ASTM Z70 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 color. And we could give more discount if you make big order like 1000 tons and more. Further more, the more appropriate payment term your can offer the better price we can provide.
2. How long can we receive the product after purchasing?
Usually within thirty working days after received 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: I work the Copper plating line at a custom plating facility in MI.I like to use jumper cables with the jumper cable clamps to help confirm electric current is getting to my parts that I am plating. The acids in the Acid copper is constantly eating the steel and copper clamps. WIll I get a good enough current through stainless steel clamps? I use stainless steel hooks, but our maintenance man thinks that is one of the reasons why I have prblems with my parts turning out. I still think it has to do with the clamps getting eatin up. My question is Is stainless steel as good or reliable enough to run an electrical current to my parts if I am using stainless steel or is it best to use another method to try and get a better connection.Please state your sources or experience with working with electricity. I need to get honest answers and not this is my opinion. We are talking about my making a living so this is important to me so I can bring food home to my table. Thanks for all the help.
- Stainless Steel Conductivity
- Q: How are steel coils recycled?
- Steel coils can be recycled through a process that involves melting them down in a furnace, removing impurities, and then shaping the molten steel into new coils or other steel products. This recycling method helps conserve resources, reduce waste, and significantly cut down on energy consumption compared to producing steel from raw materials.
- Q: What is the lifespan of coated steel coils?
- The lifespan of coated steel coils can vary depending on various factors such as the quality of the coating, the environment in which they are used, and the maintenance practices followed. However, with proper care and maintenance, coated steel coils can last for several decades.
- Q: What is the role of steel coils in the manufacturing of appliances?
- Steel coils play a crucial role in the manufacturing of appliances as they serve as the primary raw material for the production of various components. These coils are used to create sturdy and durable structures, such as frames and panels, that form the foundation of appliances. Additionally, steel coils can be molded, shaped, and cut into specific sizes, allowing manufacturers to create different parts and components needed for appliances, including doors, shelves, and interior structures. Overall, steel coils provide strength, stability, and versatility, making them an essential element in the manufacturing process of appliances.
- Q: Guitar?I have a steel- string, but prefer nylon.:)
- As people say, nylon strings are (generally) for classical/spanish acoustic guitars - put steel on those and goodbye guitar; the neck will bow and can break.. On other guitars then steel is what you need - if you put nylon on you will have no sustain and tonality. A reasonable guide is the string winding mechanism of the classical guitar. Actually, steel is a pretty much generic term as lots of steel strings are now coated or wound with bronze or phosphor-bronze etc. Strings also come in different gauges or thicknesses depending on what you play. Lighter strings are best for finger-picking and heavier for strumming. Electric guitar strings tend to be strung lighter than acoustic. Finally, a guitar is built for a certain string gauge. If you put strings on that are too light then you may get fret buzz but if you put strings on that are too heavy you could bow the neck of the guitar.
- Q: What is the process of pickling and oiling steel coils?
- The process of pickling and oiling steel coils involves several steps. First, the steel coils are immersed in a pickling bath containing a mixture of acids to remove any impurities, scale, and rust from the surface of the steel. This helps to improve the quality and appearance of the steel. After pickling, the coils are rinsed with water to remove any residual acid. Next, the coils are coated with a thin layer of oil. This oil acts as a protective barrier, preventing the steel from rusting or corroding during storage, transportation, and further processing. The oil also helps to enhance the surface finish of the steel. The pickled and oiled steel coils are then typically rolled or processed further according to specific requirements. This could involve additional annealing, cold rolling, or other treatments to achieve the desired properties or dimensions. Overall, the pickling and oiling process is crucial in preparing steel coils for various applications, ensuring they are clean, corrosion-resistant, and ready for further processing or use.
- Q: What is the process of galvanizing steel coils?
- Enhancing the durability and protecting steel coils from corrosion involves a series of steps in the galvanization process. To begin, the steel coils undergo a thorough cleaning to eliminate any dirt, oil, or impurities on the surface. This is achieved through an acid pickling process, where the coils are immersed in a diluted acid solution or treated with a chemical cleaner. The aim is to ensure the surface of the coils is free from contaminants, allowing for better adhesion of the zinc coating. Following the cleaning process, the coils are rinsed to remove any remaining acid or cleaner, preventing adverse reactions in the next stage. The subsequent step involves the actual galvanization, where the cleaned coils are submerged in a bath of molten zinc. To guarantee an even coating, the coils are carefully passed through the zinc bath using rollers or other mechanisms. The zinc bath is maintained at a specific temperature, typically around 450°C (842°F), enabling the molten zinc to bond with the steel surface. Upon withdrawal from the zinc bath, excess zinc is eliminated by passing the coils through air knives or by centrifugal spinning. This ensures control over the thickness of the zinc coating, resulting in a uniform appearance. Once the galvanization process is complete, the steel coils are gradually cooled to room temperature. This facilitates the solidification and firm bonding of the zinc coating with the steel surface, creating a protective barrier against corrosion. The final step involves inspection and quality control. The galvanized steel coils are carefully examined for any defects, such as uneven coating or areas with insufficient zinc coverage. This inspection is typically conducted visually or using specialized equipment capable of detecting anomalies. Additionally, the coating thickness is measured to ensure it meets the required specifications. In conclusion, the galvanization process for steel coils is designed to enhance their longevity and shield them from rust and corrosion. By applying a layer of zinc coating to the steel surface, the coils become more resistant to environmental factors, making them suitable for a wide range of applications across various industries.
- Q: How are steel coils used in the manufacturing of industrial valves?
- Steel coils are used in the manufacturing of industrial valves as they are processed and formed into various valve components, such as bodies, flanges, and stems. These coils are cut, shaped, and welded to create the necessary parts that make up the valve, ensuring its strength, durability, and functionality in industrial applications.
- Q: Some stainless steel products are as shiny as chrome. Can all/most stainless steel be polished to a chrome like luster.
- No they can not, it depends on the type of finish the stainless steel has. They do make a product called never dull. It is a polishing cloth that will soften the metal as it polishes.
- Q: Question about steel type used in bridges.?
- It is used for other things besides bridges and that might be a bad use. Corten was used for very tall light standards in the Fort Worth Water Gardens with the clear understanding that it was to be kept dry. As time passed and personnel changed, somebody decided the round base with bolts sticking up was ugly and put dirt and plantings in the basin in the concrete holding the poles. The watering of the plants kept the rust going through the steel and one pole eventually fell, killing two people. The other light poles were removed.
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ASTM Z70 Prepainted Rolled Steel Coil for Construction Roofing
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 28000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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