galvanized steel coils

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1) Quality Standard & Grade: JIS G3302, SGCC / ASTM 653M CQ/ EN10142 DX51D+Z

2) Thikness tolerance: +/-0.02mm Width tolerance:+/0.02mm

3) Zinc coating weight: 50g/m2

4) WEIGHT OF PER COIL: 3-5MT

5)Technology: cold rolled

6) Surface of Product: regular spangle / big spangle/ small spangle; Surface Treatment: chromated , non oiled, skin passed

7) Packing: export standard packing,packed with moisture resistant paper and metal

wrapping,securely tied for export,on metal skids7) Country of Origin :China

SIZE:0.27*750

Q:How are galvanized steel coils different from regular steel coils?: Galvanized steel coils differ from regular steel coils in terms of their protective coating. Galvanized steel coils are coated with a layer of zinc, which provides a protective barrier against corrosion and rust. This process, known as galvanization, involves dipping the steel coils into a bath of molten zinc or applying zinc onto the surface through various methods. Regular steel coils, on the other hand, do not have this protective coating, making them more susceptible to corrosion and rust. The zinc layer on galvanized steel coils not only acts as a physical barrier but also provides sacrificial protection, meaning that if the coating gets scratched or damaged, the zinc sacrifices itself to protect the underlying steel from corrosion. This makes galvanized steel coils highly durable and suitable for applications that require resistance to harsh environmental conditions, such as outdoor construction projects, automotive manufacturing, and the production of household appliances.

Q:How are steel coils used in the production of pipelines?: Steel coils are used in the production of pipelines as they are rolled into flat sheets and then formed into the required shape. These coils provide the necessary strength and durability for the pipelines, ensuring they can withstand the high pressure and harsh conditions they will be exposed to.

Q:They are showing on tv a special on how the new World Trade Center, building 1, is being built. Focusing on the steel and the guys fitting everything together.Where do builders go to buy all that steel framing? We do not build really tall buildings where I live so most of the steel is cut and welded on the job site. At World Trade Center 1, they seem to get the steel on trucks; already cut and welded.: Most of the parts are cut, welded, and fabricated indoors in a welding shop at another location. Then they're trucked to the site and simply need to be bolted together. This is made possible through the use of computer aided design and modeling programs, so that parts can be made to fit almost presciently in the field. They buy the steel from steel companies. I couldn't tell you exactly where it comes from, you'd have to ask the contractors themselves.

Q:How are steel coils processed for cold rolling or hot rolling?: Steel coils are first unwound and inspected for any defects. Then, they are cleaned and treated to remove any impurities. For cold rolling, the coils are passed through a series of rollers at room temperature to reduce their thickness and improve their surface finish. On the other hand, for hot rolling, the coils are heated to high temperatures and then passed through rollers to achieve the desired thickness and shape.

Q:Don't ask me why, but I took my stainless steel ring and I heated it up with my gas stove. I stuck it in there til the metal turned red, and the flame which is normally blue turned orange for some reason when the metal turned red. Anyway, afterwards i cooled it off in water and now it's all discolored and it feels different. It's weighs less and it doesn't feel the same. Plus, it's ugly cause it's all black and blue. What happened? Someone help: I would first check it with a magnet. If it is attracted to the magnet it has too much steel in it and that is what oxidized,not the CR. U might try to clean it with a good acid .

Q:What are the different types of steel alloys used in coil manufacturing?: There are several types of steel alloys used in coil manufacturing, including carbon steel, stainless steel, and high-strength low-alloy (HSLA) steel. Each alloy has different characteristics and properties that make it suitable for specific applications in coil manufacturing. Carbon steel is commonly used for general-purpose coils due to its affordability and versatility. Stainless steel is preferred for its corrosion resistance and aesthetic appeal, making it suitable for applications that require durability and a polished finish. HSLA steel, on the other hand, offers enhanced strength and toughness, making it ideal for demanding applications that require high performance and durability.

Q:How are steel coils used in the production of electronic devices?: Steel coils are used in the production of electronic devices for various purposes, such as creating magnetic fields, providing structural support, and acting as conductors in transformers and inductors. These coils are typically wound around a core material, such as ferrite or laminated iron, to enhance their magnetic properties and improve their performance in electronic circuits.

Q:What are the common coil storage conditions?: The common coil storage conditions include storing coils in a dry and clean area, away from direct sunlight and extreme temperature variations, and ensuring proper ventilation to prevent moisture buildup. It is also important to stack the coils properly, avoiding any damage or deformations, and to label and organize them for easy identification and retrieval.

Q:Can steel coils be used in outdoor applications?: Yes, steel coils can be used in outdoor applications. Steel is known for its durability and resistance to harsh environmental conditions, making it suitable for outdoor use. Additionally, steel coils are often coated or treated to further enhance their corrosion resistance, making them well-suited for various outdoor applications such as construction, automotive, and manufacturing industries.

Q:How does the surface finish of steel coils affect their performance?: The surface finish of steel coils significantly affects their performance. A smooth and even surface finish enhances the coil's ability to resist corrosion, improves paint adhesion, and enhances the overall appearance of the final product. Additionally, a properly finished surface reduces friction, facilitating better processing and handling during manufacturing. Therefore, the surface finish of steel coils plays a crucial role in determining their durability, functionality, and aesthetic appeal.

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