Zinc Coated Gi Galvanized Steel Coil for Construction

Zinc Coated Gi Galvanized Steel Coil for Construction

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Basic Info.

Model NO.:roofing sheet

Surface Treatment:Galvanized

Technique:Cold Rolled

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

Steel Grade:Q235

Grade:Dx51d / Dx52d/ Dx53D/ S250,280,320gd

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

Base Material:Galvanized or Gavalume, Steel

Thickness:0.14mm to 1.5mm

Zinc Coating:40-150GSM

Length:up to The Thickness

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:According to Your Requirement

Production Capacity:20000 Metric Tons/Month

Product Description

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: 30000MT/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

MOQ	50MT
What knid of color we can offer	RAL not only RAL, we can provide the color according to customer' s sample
What is the paint?	PE, PVDF
What is the original material for color-coated coil? Galvanized steel coil/cold rolled coill?	PPGI(raw material GI), GI(raw material CRC) CRC( raw material HRC)
Surface	Regular/mini/zero spangle, chromated, skin pass, dry etc.
Coil Inner Diameter	508mm
Strength of material ?	G550= 550 mpa, normally around 280 mpa
what is the range of width we can do	750mm, 762mm, 914mm, 1000mm, 1200mm, 1219mm, 1220mm, 1250mm
Thickness of the zinc coating	Z40 to Z275
which color is most popular?	Blue in China, brown, red, green in oversea market
The weight of each coils?	Normally 5Tons. We can customized 3-6Tons
What is the leadtime?	Normally for coils we can delivery it within 25-30 days. Depends on the quantity
How many years of the paint would be lasting?	Different zinc, paint coating would lead to different result, and the environment has great impact on the life time of painting.
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: What are the common methods of cutting-to-length steel coils?: There are several common methods used for cutting-to-length steel coils, depending on the specific requirements and capabilities of the industry. 1. Shearing: This method involves using a shear blade to cut the steel coil into specific lengths. Shearing is typically used for thinner gauge materials and is a cost-effective method for high-volume production. 2. Slitting: Slitting is a process that involves passing the steel coil through a set of rotating circular blades. These blades cut the coil into narrower strips of the desired width. This method is commonly used for thinner gauge materials and is ideal for producing narrow strips or multiple widths from a single coil. 3. Laser cutting: Laser cutting uses a high-powered laser beam to melt and vaporize the steel coil, resulting in a precise and clean cut. This method is suitable for a wide range of materials and can be used for complex shapes and contours. Laser cutting is often used for high-precision applications and smaller production runs. 4. Sawing: Sawing involves using a saw blade to cut through the steel coil. This method is commonly used for thicker gauge materials and is ideal for cutting large sections or heavy-duty applications. Sawing can be done manually or with the use of automated sawing machines. 5. Rotary cutting: Rotary cutting is a method that uses a rotary shear to cut the steel coil into desired lengths. This process is commonly used for thicker gauge materials and is suitable for high-speed production. Rotary cutting provides a clean and accurate cut, making it a popular choice in many industries. It is important to note that each method has its advantages and limitations, and the selection of the appropriate cutting method depends on factors such as the material thickness, coil width, required precision, production volume, and budget constraints.

Q: All the appliances in my kitchen are stainless steel, and I hate how they look becuase every time I wash them they are full of streaks. Is there a good cleaner made for stainless steel that won't leave streaks?: WD40 is great for cleaning stainless steel anything for some reason it protects it from finger prints things so you won't have to clean it as often. WD40 is great for thousands of other uses too, it can remove stickers, dried paint from glass, wipes away crayon wax, lubricates squeeky parts, spray it on your lawnmower or bike before you put it away for winter it'll come out in spring rust free.... so you'll get more than your moneys worth from a small tin.

Q: What are the different coil leveling machine configurations used for steel coils?: There are several different coil leveling machine configurations that are commonly used for steel coils. These configurations vary based on the specific requirements of the steel coils being processed. One common configuration is the four-high leveling machine. This machine consists of four leveling rolls arranged in a stack. The steel coil passes through these rolls, which apply pressure to flatten and level the material. The four-high configuration is often used for thicker and heavier steel coils, as it provides a higher level of pressure and control during the leveling process. Another configuration is the six-high leveling machine. This machine has six leveling rolls arranged in two stacks of three rolls each. The steel coil passes through the first stack, where the initial leveling is performed, and then through the second stack for further refinement. The six-high configuration is often used for thinner steel coils, as it allows for a more precise and gentle leveling process. In addition to these configurations, there are also combination leveling machines available. These machines combine leveling with other processes, such as slitting or shearing, to provide a more comprehensive solution for steel coil processing. Combination machines are often used in applications where multiple steps are required to achieve the desired final product. Overall, the choice of coil leveling machine configuration depends on factors such as the thickness and weight of the steel coil, as well as the desired level of precision and efficiency. Manufacturers and processors must carefully evaluate their specific needs and select the appropriate configuration to ensure optimal results in the steel coil leveling process.

Q: What are the different types of steel finishes available for coils?: There are several types of steel finishes available for coils, including hot-dip galvanized, galvannealed, electro-galvanized, and painted finishes.

Q: How are steel coils used in the manufacturing of railroads?: Steel coils are used in the manufacturing of railroads as they serve as a primary raw material for producing railway tracks. These coils are processed and cut into appropriate lengths, then shaped into rails through a series of rolling and forging techniques. The resulting rails provide the necessary strength, durability, and stability required to support heavy loads and withstand the wear and tear of train traffic.

Q: What are the different grades of steel used for coils?: The different grades of steel used for coils vary depending on the intended application and specific requirements. Some common grades include low carbon steel (C1008/1010), medium carbon steel (C1035/1050), high carbon steel (C1074/1095), stainless steel (300 series), and advanced high-strength steel (AHSS) grades such as DP, TRIP, and TWIP. These grades offer varying levels of strength, ductility, corrosion resistance, and formability, allowing manufacturers to choose the most suitable grade for their specific coil processing needs.

Q: Can steel coils be cut or trimmed after delivery?: Yes, steel coils can be cut or trimmed after delivery using various cutting methods such as shearing, slitting, or laser cutting, depending on the desired specifications and requirements.

Q: What are the key factors affecting the strength of a steel coil?: The key factors affecting the strength of a steel coil are the quality of the raw material used, the manufacturing process employed, the level of heat treatment, and the presence of any impurities or defects in the steel.

Q: What are the challenges in storing and handling steel coils?: Storing and handling steel coils presents numerous obstacles due to their size, weight, and potential risks associated with transportation and storage. The following are some of the challenges: 1. Space requirements: Steel coils are typically large and bulky, necessitating ample storage space. Finding suitable storage facilities that can accommodate the size and weight of the coils can be difficult, particularly in urban areas with limited space. 2. Weight and handling: Steel coils can weigh several tons, making safe handling a challenge. Specialized equipment, such as cranes or forklifts with sufficient lifting capacity, is necessary to move and position the coils without causing damage or injury. 3. Stackability: Storing steel coils in a secure and efficient manner requires careful consideration of their stackability. Coils must be stacked in a way that prevents deformation or damage to the lower coils, ensuring stability and minimizing the risk of toppling. 4. Corrosion prevention: Steel coils are susceptible to corrosion, especially when exposed to moisture or harsh environmental conditions. Implementing proper corrosion prevention measures, such as protective coatings or climate-controlled storage, is essential to maintain the quality and integrity of the coils. 5. Safety risks: Handling steel coils can be hazardous, as they can unexpectedly shift during transportation or storage. This poses a risk to workers involved in the handling process. Adequate training, appropriate personal protective equipment (PPE), and strict safety protocols are vital to minimize the potential for accidents or injuries. 6. Transportation challenges: Transporting steel coils from manufacturing facilities to storage facilities or end-users can be logistically complex. Coordinating the loading, securing, and unloading of the coils onto trucks or shipping containers requires careful planning and adherence to safety regulations. 7. Quality control: Steel coils must be stored and handled in a manner that maintains their quality. Mishandling or improper storage conditions can result in deformations, scratches, or other defects that can impact the performance and value of the steel. In conclusion, the challenges encountered in the storage and handling of steel coils necessitate attention to detail, appropriate equipment, and adherence to safety protocols to ensure the integrity of the product, the safety of workers, and the efficiency of operations.

Q: What are the challenges in coil leveling for high-strength steel?: Achieving optimal results in coil leveling for high-strength steel involves addressing several challenges. The steel's inherent hardness and strength present one of the main obstacles. High-strength steel is designed with enhanced mechanical properties, including tensile strength and hardness, making it difficult to deform and shape. To overcome the steel's high-strength nature, specialized leveling equipment is needed. This equipment must exert sufficient force to counter the steel's resistance to deformation. This may involve using stronger and more durable leveling rollers or increasing the pressure applied during the leveling process. Failing to apply the appropriate force can result in incomplete leveling, leading to residual stress and dimensional inaccuracies in the final product. Another challenge in coil leveling for high-strength steel is the potential for springback. Springback refers to the material's tendency to return to its original shape after being deformed. High-strength steel is especially prone to springback due to its higher elastic modulus. This can result in uneven leveling and dimensional variations in the coil. To mitigate springback, advanced leveling techniques can be utilized. These techniques include overbending and pre-bending the steel. Overbending involves bending the steel beyond the desired level, allowing it to spring back to the desired shape. Pre-bending, on the other hand, involves intentionally bending the steel in the opposite direction before leveling it, counteracting the effects of springback. These techniques require precise control and expertise to ensure accurate leveling. Additionally, high-strength steel often has a more pronounced yield point. The yield point is the stress level at which permanent deformation occurs. This can make it challenging to achieve consistent and uniform leveling throughout the coil. Proper adjustment of the leveling equipment and careful monitoring of the leveling process are necessary to effectively address this challenge. Furthermore, high-strength steel coils are often thinner and more sensitive to surface imperfections. Careful regulation of the leveling process is crucial to avoid causing damage to the steel surface, such as scratches or indentations. This may involve using softer leveling rollers or implementing protective measures, such as cushioning materials or coatings, to prevent surface defects. In summary, the challenges in coil leveling for high-strength steel revolve around its inherent hardness, springback tendencies, yield point behavior, and sensitivity to surface imperfections. Overcoming these challenges requires specialized equipment, advanced leveling techniques, precise control, and expertise to ensure accurate and high-quality leveling results.

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