Prepainted Rolled Steel Coil for Roofing Steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
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Basic description Info.
Surface Treatment:Coated
Technique:Cold Rolled
Standard:JIS
Color:All Ral Color Are Available
Zinc Coating:30-120G/M2
Width:914-1250mm
Thickness:0.18-0.6mm
Export Markets:Global
Additional Info.
Trademark:VST
Packing:Standard Export Package
Origin:China
Production Capacity:10000t/Month
Main Feature:
1, Pre-painted Steel Coil Can be used in building material field, galvanized wire steel tape and mainly other fields.
2, All color can be customized
3, Good quality with competitive price
Secifications
Performance testing of color coated steel coil | ||
Item | Method | Consequence |
Tensile Test | Tic-Tac-9mm 5mm cross cupping | No damage |
Bending Test | T≤ 3 | No damage |
Boiling Test | 100° Cboiling 1 hour | No damage |
Water Resistance | 1000hours immersion in 40° C(edge) | No damage |
Moisture Resistance | 50° C90%100hours(edge) | No damage |
Fire Resistance | Samples were placed in incubators, remove greenhouse cooling, and then test the adhesion | Long-term Environment in 100° C |
Fire Extinction | Liquefied petroleum gas or natural gas burner | Immediately turn off |
Drug Resistance | 10%hydrochloric acid, saturated calcium, 10%H2SO4, 10%NAOH, gasoline, ethanol | No color and trace change |
Salt spray test | 5%Nacl, 35± 2° C, 500hours | No damage |
Coating performance test standard | ||
Test item | Positive standard | Back standard |
Dry film thickness(um) | 14-16 | 7-9 |
Glass(60degree) | High 70± 5, medium40± 5, low30± 5 | 30± 5degree |
T bending | 3 | 3 |
Impact strength | 6.3 | 5.8 |
Pencil hardness(H) | H | H |
MEK(Per) | > 100 | > 100 |
Cross cut | 0 class | 0 class |
Acid resistance | 50%H2SO4 immersion in300hrs, no color, wrinkling, fading, change | |
Alkali resistance | 50%H2SO4 immersion in300hrs, no color, wrinkling, fading, change | |
Aging-resistance | 1 st class loss of color and glass | |
Salt spray | 500 | |
Images
FAQ
1.What's your MOQ?
25MT, it is for one container.
2.Do you have QC teams?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.
3. What's your normal delivery time?
Our delivery time about 10-20days for standard sizes, if you have other requirements like hardness and width ,it is about 20-40days. But don't worry ,we also try our best for the delivery time ,because time longer and our cost is higher.
4.Are the products tested before shipping?
Yes, all of our PPGI and GI was qualified before shipping. We test every batch every day.
- Q: How are steel coils used in the manufacturing of metalworking tools?
- Steel coils are used in the manufacturing of metalworking tools by being formed and shaped into various components such as blades, cutting edges, and handles. These coils serve as the primary raw material, which is then processed and treated to create durable and high-quality tools that can withstand the rigors of metalworking processes.
- Q: How are steel coils inspected for oil or rust residues?
- Steel coils are typically inspected for oil or rust residues through visual examination, as well as using various testing methods such as wiping the surface with a white cloth to check for any visible stains or residues. Additionally, some inspectors may also use specialized equipment such as ultraviolet lights or moisture detectors to identify any hidden oil or rust contaminants.
- Q: I understand that Stainless Steel is a low carbon steel having minimum 10.5% chromium content in it there r 60 different type of stainless steel. Kindly informa) Is this info correct?????b) Which stainless steel can get rusted or can have superficial rust????
- Stainless steel is a generic term for a whole range (there are more than 60 types) of Fe-Cr alloys. They all contain some amount of C and some alloys include a good number of other alloying elements. In almost all cases, the materials have corrosion resistance due the Cr atoms that are in solid solution with the Fe matrix. Under corrosive conditions, the Cr forms a thin tight coherent layer of Cr-oxide. This Cr oxide coating prevents further corrosion so long as it is not chemically or physically removed. If the SS has been subject to mechanical abrasion, the corrosion resistance can sometimes be restored by a light exposure to nitric acid which passivates the surface, restoring the Cr-oxide layer. The carbon content is an important factor in corrosion preformance but so is the heat treatment. Under the wrong conditions and in different environments, all SSs can rust. One of the most common corrosion problems is sensitization which occurs in the heat affect zone (HAZ) around welds. If the C content is high enough and the heat is high enough, the Cr atoms in solid solution form Cr-carbides and are no longer available to form a protective Cr-oxide. The corrosion resistance can be restored by appropriate heat treatment.
- Q: What are the different methods of corrosion protection for steel coils?
- There are several methods of corrosion protection for steel coils, including but not limited to: 1. Coating: Applying a protective layer such as paint, polymer, or zinc coating on the surface of the steel coil to prevent direct contact with corrosive agents. 2. Galvanizing: Immersing the steel coil in a bath of molten zinc, creating a protective coating that prevents corrosion. 3. VCI (Vapor Corrosion Inhibitor): Using volatile corrosion inhibitors that release molecules to form a protective layer on the steel coil, preventing corrosion. 4. Oil or Wax Coating: Applying a layer of oil or wax on the surface of the steel coil to act as a barrier against moisture and corrosive elements. 5. Cathodic Protection: Using sacrificial anodes or impressed current to protect the steel coil by providing a more easily corroded metal that attracts corrosion instead. 6. Desiccants: Placing desiccant materials such as silica gel or molecular sieves inside the packaging to absorb moisture and prevent corrosion. 7. Environmental Control: Maintaining controlled humidity levels, temperature, and proper ventilation in storage areas to minimize the risk of corrosion. 8. Proper Handling and Storage: Implementing safe handling practices during transportation and storing steel coils in dry, covered areas away from corrosive substances. It is important to select the appropriate method based on the specific application, environment, and desired level of protection for the steel coils.
- Q: What are the different methods of heat treatment for steel coils?
- There are several different methods of heat treatment for steel coils, each with its own benefits and applications. 1. Annealing: This method involves heating the steel coils to a high temperature and then slowly cooling them, usually in a controlled atmosphere. Annealing helps to relieve internal stresses, improve ductility, and refine the grain structure of the steel, making it softer and more machinable. 2. Normalizing: Normalizing is similar to annealing, but the cooling process is typically faster. This treatment is often used to refine the grain structure and achieve a more uniform hardness throughout the steel coils. It also helps to remove any residual stresses and improve the mechanical properties of the material. 3. Quenching and tempering: In this two-step heat treatment process, the steel coils are first heated to a high temperature and then rapidly cooled by immersion in a quenching medium, such as oil or water. This causes the formation of a hard, brittle phase called martensite. To improve the toughness and reduce the brittleness, the coils are then reheated to a lower temperature and held there for a specific period of time. This process, known as tempering, helps to reduce the internal stresses and increase the ductility and toughness of the steel. 4. Case hardening: Case hardening is a heat treatment method used to increase the surface hardness of the steel coils while maintaining a relatively soft and ductile core. The process involves heating the coils in the presence of a carbon-rich atmosphere, allowing carbon to diffuse into the surface layer of the steel. This creates a hard outer layer, known as the case, while preserving the desired mechanical properties in the core. 5. Stress relieving: Stress relieving is performed by heating the steel coils to a specific temperature and holding them there for a sufficient period of time. This process helps to reduce residual stresses that may have been introduced during previous manufacturing or heat treatment processes. Stress relieving can improve dimensional stability, reduce the risk of distortion or cracking, and enhance the overall performance of the steel coils. Overall, the choice of heat treatment method for steel coils depends on the desired properties, intended application, and specific requirements of the end product. Each method has its own advantages and can be tailored to achieve the desired balance between hardness, toughness, ductility, and other mechanical properties.
- Q: What are the dimensions of steel coils used in automotive component manufacturing?
- The dimensions of steel coils utilized in the manufacturing of automotive components can differ based on the distinct specifications of each component. Nevertheless, the industry typically adheres to standard dimensions, which usually span from 0.5 to 3 millimeters in thickness and 600 to 2,000 millimeters in width. The weight of these coils may vary, but typically falls within the range of 2 to 25 metric tons. These dimensions are carefully selected to ensure hassle-free processing and conversion of the coils into the essential automotive components, while simultaneously meeting the necessary standards for strength and durability, which are essential for their use in vehicles.
- Q: Can anyone suggest a free font that looks like steel with rivets? I'm looking for something industrial looking.
- Rivet Font
- Q: How do steel coils compare to stainless steel coils?
- Steel coils and stainless steel coils are both widely used in various industries for their strength and durability. However, there are some key differences between the two that should be considered when choosing the appropriate material for a specific application. One of the main distinctions between steel coils and stainless steel coils is the composition of the materials. Steel coils are made primarily of iron and carbon, with other elements added to enhance specific properties. On the other hand, stainless steel coils are made of iron, carbon, and a significant amount of chromium, which gives them their unique corrosion-resistant properties. Due to the presence of chromium, stainless steel coils offer superior resistance to corrosion, tarnishing, and rust compared to regular steel coils. This makes stainless steel coils particularly suitable for applications in environments with high humidity, moisture, or exposure to corrosive substances. In contrast, steel coils are more prone to rust and may require additional protective coatings or treatments to prevent corrosion. Another significant difference is the appearance of the two materials. Stainless steel coils have a shiny and reflective surface, giving them an aesthetically pleasing look. They are commonly used in applications where appearance is important, such as kitchen appliances, architectural structures, or decorative purposes. Steel coils, on the other hand, have a matte or dull finish and are often used in industrial applications where appearance is not a primary concern. In terms of strength, both steel and stainless steel coils offer excellent mechanical properties. However, stainless steel coils generally exhibit higher tensile strength and greater resistance to high temperatures. This makes them suitable for applications that require strength, such as construction, automotive, or aerospace industries. Lastly, cost is a factor that should be considered when comparing steel coils to stainless steel coils. Steel coils are generally more cost-effective than stainless steel coils due to the lower cost of raw materials and simpler manufacturing processes. However, when the added value of corrosion resistance and longevity is taken into account, stainless steel coils may prove to be a more economical choice in the long run, as they require less maintenance and replacement. In conclusion, steel coils and stainless steel coils have different properties and characteristics that make them suitable for specific applications. Stainless steel coils offer superior corrosion resistance, a shiny appearance, and higher tensile strength, while steel coils are more cost-effective. The choice between the two ultimately depends on the specific requirements of the application, such as the environment, aesthetics, strength, and budget.
- Q: Where are the coils and the steel plates used? Where did the steel plate come from?
- Steel plate is divided into many kinds of PU, low alloy, boiler plate, vessel plate, high strength plate, etc..
- Q: What are the major challenges faced by steel coil manufacturers?
- Some major challenges faced by steel coil manufacturers include fluctuations in raw material prices, increasing competition from international markets, the need to meet strict quality and safety standards, and the impact of global economic conditions on demand for steel products. Additionally, environmental regulations and sustainability concerns have also become important challenges for steel coil manufacturers.
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Prepainted Rolled Steel Coil for Roofing Steel
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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