Color Coated Zinc Steel Coil of Building Materials

Color Coated Zinc Steel Coil of Building Materials

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 20000 m.t./month

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Basic Info.

Surface Treatment:Coated

Grade:Galvanized or Gavalume

Width:914, 1000, 1200, 1219, 1220, 1250

Treatment:Galvanized or Gavalume

Color:Ral Standard, or Buyer′s Sample Color

Zinc Coating:40-150GSM

Length:up to The Thickness

Base Material:Steel

Lacquer:Top Side15-25 Micro, Back Side 5 Micro

Surface:Passivation Unoiled Free Spangle Passivated

Export Markets:Global

Additional Info.

Trademark:STW or OEM

Packing:Export Seaworthy Packing

Standard:JIS G3312 / CGCC

Production Capacity:20000 Metric Tons/Month

Specifications;
1.     Aluzinc coating mass: 30g-275g/sqm
2.     Coil weight:4-6 tons per coil
3.     Edge treatment: Mill edge or cut edge.
4.     Technical treatment: Bright annealed, flatting, cold harden.
5.     Surface treatment: Annealed, bright finish, dull/bright finish, slit edge.
6.     Spangle: Normal/small/big/zero spangle.
7.     Delivery terms: FOB / C&R / CIF
8.     Supply Ability: 20000MT/month
9.     Application: The construction industry: The roof structure, keel, grill, Clapboard, ceilings, fire shutter doors, etc; The light industry, the Automobile, agriculture, animal husbandry, fishery, casing of household Electronic application, civilian smoke stack, etc.
10.   Delivery time: Within 30 days after the receipt of L/C or Signed the contract or according to customer's requirement.
Special design available according to requirement; Anti-corrosion And high-temperature resistant with black painting; All the production process Are made under the ISO9001: 2000 strictly

Zinc Coating	60-275g( as required)
Thickness Range	0.14-1.5mm
Coil Inner Diameter	508mm
Coil weight	3-5MT(as required)
Surface	Regular/mini/zero spangle, chromated, skin pass, dry etc.
Width range	600-1250mm(900mm, 1215mm, 1250mm, 1000mm the most common)
Applications	With excellent cold bending molded manufacturablity, good decoration effect, strong anti-corrosion ability, galvanized steel coils and sheets are also pollution-free and easily recycled. Accordingly, they can be used as final products and basic plates of color coated steel coils and widely applied in construction, home appliances, decoration, ect.

Q: Can you reload spent casings if they are steel?: Technically they are reloadable but it's way too much effort and it'll probably cost more to do than its worth. I know you're probably asking this for surp. 7.62x54r right? The steel will have to be fully resized every time and you should only do it 1-2 time max to be safe. Also if your ammo is berdan primed the primers are very hard to find and these are a whole different beast than boxer primed. Short answer is yes but not worth it IMO.

Q: What are the factors affecting the strength of steel coils?: The strength of steel coils can be influenced by several factors. These include the grade of steel used, the manufacturing process employed, the thickness and width of the coils, the quality of their surface, how they are stored and handled, and the environmental conditions they are exposed to. When choosing and using steel coils, it is crucial to take these factors into account to ensure that they meet the necessary strength requirements for their intended use.

Q: Brass as a rule I believe is betterhowever I do not plan to get into reloading any time soon I just want some cheap practice ammo so will steel case ammo hurt my gun (semi auto) any more than brass ammo and if so how much more?: However okorder /.. I my self am a RCBS, Lyman and Forster fan but I do use some of the Lee crimp and necking dies because I do like the design better, as well as the lee case trimmer design. D58 Hunting with Rifle, Pistol, Muzzle loader and Bow for over 3 decades. Reloading Rifle, Pistol and shotgun for over 3 decades.

Q: What are the different types of steel coil surface defects?: During the manufacturing or handling process, various steel coil surface defects may arise. Some commonly encountered types are as follows: 1. Rust: When moisture or oxygen comes in contact with the steel coil, rust, a reddish-brown discoloration, may develop on its surface. 2. Scratches: While the steel coil is being handled or transported, superficial marks known as scratches can be incurred. These marks can vary in depth and severity, ranging from light surface scratches to deep gouges. 3. Stains: Exposure to chemicals or other substances can lead to stains, discolored patches that appear on the coil's surface. Removing them may prove to be challenging. 4. Roll marks: During the rolling process, impressions or indentations called roll marks may form. Uneven pressure or misalignment of the rolls causes them, resulting in lines or patterns on the coil's surface. 5. Edge wave: Imperfectly flat edges of the coil can result in a defect known as edge wave. This defect causes the edges to appear wavy or uneven and can impact the coil's overall appearance and performance. 6. Oil spots: If the oil or lubricants utilized in the manufacturing process are not adequately removed, surface defects called oil spots can manifest. These spots appear as dark patches or spots on the coil's surface and may hinder the adhesion of coatings or paints. 7. Pitting: Small, shallow depressions or pits on the coil's surface are indicative of a defect called pitting. Factors like corrosion, uneven cooling, or impurities in the steel can cause this defect. 8. Holes: Holes are severe surface defects that can arise due to various factors, including corrosion, mechanical damage, or manufacturing errors. These defects come in different sizes and can significantly compromise the coil's structural integrity. Promptly addressing these surface defects is crucial for maintaining the quality and performance of the steel coil. Regular inspections, proper handling, and appropriate surface treatments can help minimize the occurrence of these defects.

Q: I have two theories, which one's correct?My book says that steel is made up of 98% iron and 2% carbon.98% of iron's molar mass (55.85 g/mol) is 54.733.2% of carbon's molar mass (12.01 g/mol) is .2402.If you add them up that gives you that steel has a molar mass of 54.97 g/mol.However, steel's chemical formula is Fe(3)CThat would make it's molar mass 179.56 g/mol.( Because 3(55.85) + 12.01 = 179.56 )Which one is correct?: Steel is an alloy - a mixture not a compound; it doesn't have a chemical formula. Only elements and compounds have molecular weights, not mixtures that aren't composed of a uniform molecule, so neither answer is correct.

Q: How are steel coils stored in warehouses?: Steel coils are typically stored in warehouses by stacking them horizontally on top of each other, often using specialized racks or shelves designed to support their weight. Coils are usually aligned in rows with adequate space between each stack to allow for easy access and movement of the coils. Additionally, some warehouses may use protective materials, such as wooden or plastic spacers, to prevent scratching or damage to the coils during storage.

Q: What are the different methods of joining steel coils?: There are several methods of joining steel coils, including welding, using mechanical fasteners, and adhesive bonding. Welding is a common technique that involves melting and fusing the edges of the coils together using heat. Mechanical fasteners, such as bolts or screws, can also be used to secure the coils together. Additionally, adhesive bonding involves using a strong adhesive to bond the coils together. Each method has its own advantages and considerations depending on the specific application and requirements.

Q: What are the different methods of blanking steel coils?: There are multiple techniques utilized for blanking steel coils, including: 1. Shearing: To achieve the desired size and shape, shearing involves cutting the steel coil using a shear or a set of shears. This method is commonly used as it is fast and cost-effective, particularly suitable for thin to medium-thickness steel coils. 2. Laser cutting: Employing a high-powered laser beam, laser cutting is a precise and efficient method for cutting through steel coils. It is ideal for complex shapes and thick steel coils, providing clean and accurate cuts. Consequently, it is favored for high-quality blanking. 3. Waterjet cutting: A versatile method, waterjet cutting employs a high-pressure stream of water mixed with an abrasive material to cut through steel coils. It generates no heat and can cut through various materials, including steel. It is particularly suitable for cutting thick steel coils and intricate shapes and designs. 4. Stamping: This method involves pressing a die into the steel coil to cut out the desired shape. It is commonly used for high-volume production as it can rapidly cut multiple pieces simultaneously. Stamping is suitable for cutting simple shapes and is often combined with other processes, such as shearing or laser cutting, for more complex shapes. 5. Plasma cutting: Plasma cutting utilizes a high-velocity jet of ionized gas to cut through the steel coil. It is suitable for cutting thick steel coils and can handle a wide range of materials. Known for its speed and versatility, plasma cutting is a popular method for blanking steel coils. These methods of blanking steel coils offer various benefits depending on project requirements, such as speed, precision, complexity of shapes, and material thickness. The selection of the method relies on factors like cost, production volume, desired quality, and turnaround time.

Q: How are steel coils tested for dimensional accuracy?: Steel coils are typically tested for dimensional accuracy using various methods such as measuring the width, thickness, and diameter of the coil. This can be done using specialized instruments like calipers, micrometers, and laser scanners to ensure the coil's dimensions meet the required specifications.

Q: What are the different coil winding methods used for steel coils?: The different coil winding methods used for steel coils include cross-winding, helical winding, and layer winding. Cross-winding involves winding the steel coil in a crisscross pattern to ensure even distribution of the material. Helical winding involves winding the steel coil in a spiral pattern, which provides strength and stability to the coil. Layer winding involves winding the steel coil in layers, with each layer placed on top of the previous one, ensuring efficient use of space and easy unwinding of the coil.

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