Pre-Painted Galvanized/Aluzinc Steel Roof with Different Color

Pre-Painted Galvanized/Aluzinc Steel Roof with Different Color System 1

Pre-Painted Galvanized/Aluzinc Steel Roof with Different Color

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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2.Main Features of the Pre-Painted Galvanized/Aluzinc Steel Roof：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent heat resistance performance

• High strength

• Good formability

• Good visual effect

3.Pre-Painted Galvanized/Aluzinc Steel Roof Images

Pre-Painted Galvanized/Aluzinc Steel Roof with Different Color

4.Pre-Painted Galvanized/Aluzinc Steel Roof Specification

Standard: AISI, ASTM, BS, DIN, GB, JIS

Grade: SGCC SGCH SGCD DX51D

Thickness: 0.13-3.0mm

Model Number: AISI, ASTM, BS, DIN, GB, JIS

Surface Treatment: Galvanized, anti-finger,

Application: Container Plate，panel sandwich

Width: 30-1500mm

Length: any length

color: RAL color

5.FAQ of Pre-Painted Galvanized/Aluzinc Steel Roof

What’s the brand of the paint?

We use the best brand of all of the word—AKZO.

What’s the wet and heat resistance of the roof?

More than 1000 hours.

What’s the basic material of this product?

Galvanized/Aluzinc Steel

What’s the coating composition of Hot-Dip Galvanized Steel Coil?

The coating composition is 55% aluminium in weight ratio, 43.4% zinc, and 1.5% silicon, with excellent corrosion and heat resistance performance.

Q: Is steel harder than iron or is iron harder than steel?Please explain... and help!Thanks: steel is harder than iron Iron is a chemical element. It is a strong, hard, heavy gray metal. It is found in meteorites. Iron is also found combined in many mineral compounds in the earth's crust. Iron rusts easily and can be magnetized and is strongly attracted to magnets. It is used to make many things such as gates and railings. Iron is also used to make steel, an even harder and tougher metal compound. Steel is formed by treating molten (melted) iron with intense heat and mixing it (alloying) with carbon. Steel is used to make machines, cars, tools, knives, and many other things.

Q: What are the common certifications required for steel coils?: The common certifications required for steel coils depend on the specific industry and application of the coils. However, there are several widely recognized certifications that are commonly required. 1. ISO 9001: This certification ensures that the manufacturer has implemented a quality management system that meets international standards. It verifies that the manufacturer has the necessary processes and controls in place to consistently produce high-quality steel coils. 2. ISO 14001: This certification focuses on environmental management systems. It ensures that the manufacturer is committed to minimizing its environmental impact and reducing waste in the production process. 3. ISO 45001: This certification pertains to occupational health and safety management systems. It ensures that the manufacturer has implemented measures to protect the health and safety of its employees and stakeholders. 4. ASTM International Standards: The American Society for Testing and Materials (ASTM) has established various standards for steel coils. These standards cover aspects such as chemical composition, mechanical properties, and dimensional tolerances. Compliance with these standards ensures that the coils meet the specified requirements and are suitable for their intended use. 5. EN Standards: The European Committee for Standardization (CEN) has developed a set of standards for steel coils, known as EN standards. These standards cover similar aspects as ASTM standards but are specific to the European market. 6. JIS Standards: The Japanese Industrial Standards (JIS) are widely used in the steel industry in Japan and other countries in Asia. Compliance with JIS standards ensures that the coils meet the specific requirements of the Japanese market. 7. Product-specific certifications: Depending on the application of the steel coils, additional certifications may be required. For example, if the coils are intended for automotive use, certifications such as ISO/TS 16949 (Quality Management Systems for the Automotive Industry) may be necessary. It is important to note that the specific certifications required may vary depending on the region, industry, and customer requirements. Manufacturers should consult with their customers and industry standards organizations to determine the exact certifications necessary for their steel coils.

Q: How are steel coils inspected for yield strength using tensile testing?: Tensile testing is the method used to inspect the yield strength of steel coils. This involves subjecting a sample of the coil to controlled tension until it reaches its breaking point. Through this test, various mechanical properties of the steel, including yield strength, can be determined. To conduct the tensile testing for yield strength inspection, a small strip of the coil is cut and prepared. The strip is then placed in a machine specifically designed for tensile testing. This machine consists of two grips that securely hold the strip at opposite ends. Subsequently, the machine applies a steadily increasing force to the strip, causing it to elongate until it eventually breaks. Throughout the test, the machine measures the force applied and the elongation of the strip. The yield strength is determined by identifying the point on the stress-strain curve where the material begins to undergo plastic deformation, meaning it exhibits permanent deformation without any increase in load. Typically, the yield strength is reported as the stress required to cause a specific amount of plastic deformation, such as 0.2% or 0.5%. This value represents the maximum stress that the steel can endure without experiencing permanent deformation. By performing tensile testing on a sample of the steel coil, it becomes possible to ascertain its yield strength. This information is vital in ensuring the quality and dependability of the steel coil, as it indicates the maximum stress it can tolerate before permanent deformation occurs. Furthermore, this testing method allows for the comprehensive evaluation of other mechanical properties, including ultimate tensile strength, elongation, and modulus of elasticity, thus providing a thorough understanding of the steel's performance characteristics.

Q: How are steel coils inspected for bendability using bend testers?: Steel coils are inspected for bendability using bend testers, which are specialized machines designed to measure the flexibility and bend resistance of the coils. The process involves several steps to ensure accurate and reliable results. Firstly, the steel coil is prepared by securing it firmly in place, usually using clamps or other mechanisms to prevent movement during testing. This ensures that the coil remains stable and allows for consistent and repeatable measurements. Next, the bend tester is set up according to the specified testing parameters. These parameters typically include the desired bend angle, the speed at which the bend is applied, and the number of cycles to be performed. The bend tester is equipped with a bending mechanism that exerts a controlled force on the coil, simulating the bending conditions it may undergo during its application or use. Once the bend tester is set up, the bending process begins. The machine applies a gradually increasing force to the steel coil until it reaches the desired bend angle. This force is carefully measured and monitored throughout the process to ensure accuracy. During the bending process, the machine records and displays important data, such as the applied force, the angle of bend, and any indications of cracking or other defects. This data is crucial for evaluating the bendability of the steel coil and determining whether it meets the required standards. After the desired bend angle is reached, the coil is released from the bending mechanism, and any residual stresses are allowed to relax. This relaxation period is important to observe any potential spring-back effect, where the coil partially returns to its original shape after bending. The amount of spring-back is also measured and recorded for further analysis. Finally, the inspection results are analyzed to determine the overall bendability of the steel coil. If the coil meets the specified bendability criteria, it can be considered acceptable for its intended application. However, if any cracks, fractures, or excessive spring-back are detected, further investigation and analysis may be required to identify the cause and determine appropriate corrective actions. In conclusion, bend testers play a vital role in inspecting steel coils for bendability. Through a controlled and systematic process, these machines accurately measure the flexibility and resistance to bending, helping to ensure the quality and reliability of steel coils used in various industries.

Q: how much pressure can steel withstand? and how much pressure can concrete withstand? per m3 or cm3? thanks: A common allowable stress for steel is 24,000 psi for A36 steel. Note that allowable stress is a working stress that is less than ultimate stress the stress at which the material will rupture. This allowable stress keeps the steel within the elastic range. Concrete allowable stress is typically around 3000 psi. Concrete, though, being a mixed material has variable values for allowable stress. Reinforced concrete design theory suggests that concrete should not be considered to be able to carry much, if any, tensile force. This explains why you will see steel rebar or reinforcing bars cast in to the concrete. The steel is there to carry any tensile forces, while the concrete is there to carry compression forces. This is a VERY basic explanation. There are entire books on both of these subjects...

Q: I noticed that Jimmy Page finger picked on a steel acoustic guitar on quite a few tracks like Stairway to heaven and other ones and I was wondering how did he do it? I know it is more difficult to finger pick on a steel acoustic because of the rougher steel strings and higher tensions so I was wondering do they make specific strings that allow for fingerstyle playing? Also Randy Rhoads finger picked a steel acoustic on Dee along with a Classical guitar.: First okorder /... In truth their are many, many players who finger pick acoustic guitars, once you get the hang of the various picking patterns it's not extremely difficult to do. There aren't really any specific strings that are required to finger pick. It will mostly come down to the players preference and the type of music they are doing. It is actually more difficult to finger pick an electric guitar since you have less room between the strings and the pickup so you will find that a lot of times you will hit the pickup with the metal finger pick which can be a bit disturbing but practice helps. Pat SImmons of the Doobie Brothers uses finger picks on a Gibson ES335 all the time.

Q: what are the characteristics when of iron or steel when stretched? which one could be stretched further? which one stretches more evenly?thankyou: Technically, this is known as ductility. a material which can be permanently bent and stretched is said to be ductile. Pure iron, when it lacks carbon and impurities like sulfur and phosphorus, is relatively soft, ductile, and weak. It's about as soft as brass. It can be stretched to about 50% of it's original length before it breaks. The amount a sample can be stretched without breaking is known as elongation. The key to steel is the addition of about 2 parts per thousand of carbon, or around 0.2%. This alters the crystal structure and makes steel much harder, stronger, and tougher, though it also becomes somewhat less ductile. Mild steel, with a low carbon content, has an elongation of around 30% Adding more carbon makes the steel yet stronger, but further reduces the elongation. Adding more than 2-3% carbon produces what is known as Cast Iron. Cast iron is brittle. It has virtually no ductility. It's pretty cheap to produce though.

Q: How do steel coils contribute to the manufacturing of oil and gas equipment?: Steel coils are essential in the manufacturing of oil and gas equipment because they provide the necessary raw material for various components. Coils are used to fabricate pipes, valves, tanks, and other critical parts, ensuring their strength, durability, and resistance to high pressure and extreme temperatures. Additionally, steel coils can be easily shaped and formed into different sizes and specifications, enabling manufacturers to meet the specific requirements of oil and gas equipment.

Q: i like stainless steel guns, especially the SW 686 .357, i plan on getting one but my question is would polishing the stainless steel make the gun more prone to corrosion over leaving it as it is? and will the polished surface appear uneven after use and sitting? obviously all metal takes some sort of upkeep but is polished more high maintenance than non-polished?: Stainless Revolver

Q: How are steel coils used in the production of metal roofing panels?: Steel coils are a critical component in the production of metal roofing panels. These coils, which are rolled sheets of steel, play a crucial role in shaping and forming the panels. To start with, the steel coils are unwound and fed into a machine called a roll former. This machine uses a series of rollers and dies to gradually shape and bend the steel into the desired profile of the metal roofing panel. The coils pass through these rollers, which apply pressure and force to mold the steel into the required shape and size. Once the metal has been formed into panels, it may undergo additional processes to enhance its durability and appearance. This can include galvanizing or coating the panels with various protective layers to prevent corrosion and improve weather resistance. These additional steps help to ensure that the metal roofing panels are able to withstand harsh environmental conditions and provide long-lasting performance. Steel coils are preferred in the production of metal roofing panels due to their strength and durability. Steel is known for its exceptional strength-to-weight ratio, making it a suitable material for roofing applications. Additionally, steel is highly resistant to various weather conditions, including high winds, heavy rains, and extreme temperatures. This makes it an ideal choice for roofing panels that need to withstand the elements and provide reliable protection for buildings. Overall, steel coils are an essential component in the manufacturing process of metal roofing panels. They are used to shape and form the panels, which are then further processed to enhance their durability. The use of steel in these panels ensures that they can withstand harsh weather conditions and provide long-lasting performance for residential, commercial, and industrial buildings.

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