Cold Rolled Galvanized Steel Coil for Steel Tube

Cold Rolled Galvanized Steel Coil for Steel Tube System 1

Cold Rolled Galvanized Steel Coil for Steel Tube

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 36 m.t.

Supply Capability:: 30000 m.t./month

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Packaging & Delivery

Packaging Detail:	Standard seaworthy export package
Delivery Detail:	25 days after recepit of 30% TT

Specifications

Cold roll galvanized coil
Thickness: 0.14-2.0mm
Width: 600-1250mm
Zinc coating:Z60-275g/sqm
ID coil:508/610

Cold roll galvanized coil

Thickness: 0.14-2.0mm
Width: 600-1250mm
Zinc coating:Z60-275g/sqm

The detailed information:

Commodity	Hot dip galvanized steel coil and sheet
Techinical Standard	JIS 3302 / ASTM A653 / EN10143
Grade	DX51D / DX52D/ DX53D/ S250,280,320GD
Types	Commercial / Drawing / Deep Drawing / Structural quality
Width	600-1250mm
Thickness	0.14-2.0mm
Type of coating	galvanized
Zinc coating	Z60-275g/m2
Surface treament	chromed / skinpass/ oiled/slightly oiled/ dry/ anti-fingerprint
Surface structure	zero spangle / minimized spangle / regular spangle/ big spangle
ID coil	508mm or 610mm
Coil weight	3-8 MT per coil
Package	Properly packed for ocean freight exportation in 20''containers
Application:	Industrial panels, roofing and siding for painting
Price terms	FOB,CFR,CIF
Payment terms	30%TT in advance+70% TT or irrevocable 70%L/C at sight
delivery time	25 days after recepit of 30% TT
Remarks	Insurance is all risks
	MTC will be handed on with shipping documents
	We accept the third party certificatation test

Q: How do steel coils contribute to acoustic performance in buildings?: Steel coils can contribute to acoustic performance in buildings by providing a solid structure that reduces vibrations and sound transmission. The use of steel coils in construction helps dampen noise by absorbing and dissipating sound waves, resulting in a quieter and more comfortable indoor environment.

Q: How are steel coils inspected for uniformity using statistical analysis?: Various techniques and procedures can be employed to inspect steel coils for uniformity using statistical analysis. The primary goal is to guarantee that the coils meet the required specifications and exhibit consistent quality throughout. One prevalent inspection method involves obtaining a representative sample of steel coils from a batch or production run. These coils are selected randomly to ensure a fair representation of the entire batch. Statistical analysis is then conducted on this sample to assess the uniformity of the coils. The initial step entails measuring various physical properties of the coils, such as thickness, width, weight, and surface defects. These measurements are recorded for each coil in the sample. The collected data is subsequently subjected to statistical analysis, encompassing mean, standard deviation, and range calculations. By calculating the mean values of the measured properties, one can determine the average values for thickness, width, weight, etc. These mean values can be compared to the desired specifications to identify any deviations or inconsistencies. The standard deviation serves as an indicator of the variability or dispersion of the data, revealing the degree to which the coils adhere to the desired specifications. A smaller standard deviation denotes greater uniformity. Furthermore, range calculations can be executed to ascertain the difference between the maximum and minimum values of the measured properties within the sample. A smaller range implies a higher level of uniformity. Statistical analysis can also incorporate the use of control charts, such as X-bar and R-charts, to visually track the variation in the measured properties over time. These charts offer a graphical representation of the data, facilitating the identification of any trends or out-of-control conditions. In summary, statistical analysis provides a systematic approach to evaluating the uniformity of steel coils by providing objective measurements and statistical indicators. By analyzing the collected data, manufacturers can detect any deviations from the desired specifications and implement appropriate corrective measures to ensure consistent quality throughout the production process.

Q: How are steel coils used in the production of HVAC ductwork?: Due to their durability and strength, steel coils find widespread use in the production of HVAC ductwork. Galvanized steel is typically used to make these coils, as it offers protection against corrosion and extends the lifespan of the ductwork. To initiate the manufacturing process, the steel coils are unrolled and cut to the desired length. Subsequently, they are passed through a machine that shapes the steel into either a rectangular or round duct form. This shaping process employs various techniques like roll forming or press braking. Once the steel has taken the desired duct shape, it is joined together using different methods such as welding or locking mechanisms. Rectangular ducts are commonly welded, while round ducts often incorporate locking mechanisms like snap locks or Pittsburgh seams. These joining techniques ensure the ductwork is secure and airtight. Following the assembly of the ductwork, additional processes like insulation or lining may be applied. Insulation aids in minimizing heat loss or gain, while lining improves the acoustic properties of the ductwork. These supplementary steps are often undertaken to comply with specific requirements or regulations. In conclusion, steel coils are essential in the production of HVAC ductwork due to their strength, durability, and corrosion protection. Steel's versatility allows for the fabrication of ductwork in various shapes and sizes, making it a popular choice for HVAC systems.

Q: How are steel coils used in the production of power transmission towers?: Steel coils are used in the production of power transmission towers as they provide the necessary strength and durability to support the towers and withstand the transmission lines' weight and environmental conditions. The steel coils are shaped and welded into various sections and components, such as the legs, base plates, and cross arms, which are then assembled to create the tower structure. The coils' high tensile strength ensures the towers can withstand the mechanical stresses and loads imposed by the transmission lines, making them a crucial component in the construction of power transmission towers.

Q: Why is the selection of steel building erector of extreme importance while starting a new steel building project?: Steel building erectors play an important role as they are well versed with all the ups and downs of erecting a steel building and can prevent your construction project from unnecessary delays. There are lot of inexperienced steel building erectors in the market who can offer you their services at a much cheaper rate. Be cautious! It never works in the long run. A qualified steel building erector will always provide an initial professional insight of your project and cost effective solutions for your project.

Q: What are the different types of steel coil slitting techniques?: There are several types of steel coil slitting techniques, including rotary slitting, loop slitting, and oscillating slitting. Rotary slitting involves using circular blades to cut the steel coil into narrower strips. Loop slitting involves creating a loop in the steel coil and then cutting it with straight blades. Oscillating slitting uses a reciprocating blade that moves back and forth to cut the coil into smaller widths.

Q: What is the role of steel coils in the production of appliances?: The role of steel coils in the production of appliances is to provide a strong and durable material for various components, such as the outer body, internal structures, and key parts. Steel coils are used to manufacture appliance parts like panels, frames, and brackets, ensuring stability, strength, and longevity. The versatility and strength of steel make it an ideal choice for appliances, as it can withstand heavy loads and provide the necessary support and protection.

Q: How are steel coils weighed?: Steel coils are usually weighed using industrial scales or weighing machines. These scales are specifically designed to handle the heavy weight of steel coils and provide accurate measurements. The coils are placed on the scale, and the weight is determined based on the pressure exerted on the scale's sensors.

Q: What are the weight ranges of steel coils?: The weight ranges of steel coils can vary depending on their dimensions and intended use. Generally, steel coils can range from a few hundred pounds to several tons in weight. For example, hot-rolled steel coils typically weigh between 10 and 25 tons, while cold-rolled steel coils can weigh anywhere from a few hundred pounds to 20 tons. The weight of steel coils can also vary based on factors such as the thickness and width of the coil, as well as the grade and type of steel being used. Ultimately, the weight range of steel coils is determined by the specific requirements of the industry and application in which they are being used.

Q: I have some steel wool and a charged 9V Battery, when I connect 2 wires to the battery, then touch the wool with the ends of the wires the wool instantly starts burning, but when I connect 2 wires to the piece of steel wool (a new piece not same one of course) and touch the battery with the ends of the wire nothing happens (see image...): The reason the steel wool catches fire is because the strands of steel are so fine and they have a high resistance. The thin strands get to red-hot very quickly, compared to larger gauge copper wire which has lower resistance and can dissipate the heat over its larger mass. When you connect the battery to the wire first, then touch the steel wool, you are making solid contact with the steel wool and your hand makes sure that the wire stays in contact. The current continues to flow and the wool heats up. When you connect the wire to the steel wool first, as soon as you connect the battery the current melts that tiny bit of steel wool touching the wire and electrical contact is lost. The current stops flowing. No fire. If you want to connect the wire first and not have to hold it, you have to make sure that the current keeps flowing, perhaps by using a braided copper wire and spreading out the individual strands to make multiple contacts. Either that, or remove the insulation from a longer section of the wire and make sure that the entire un-insulated part of the wire is in contact with the steel wool. Maybe even weigh it down. Remember that any strands of steel wool touching that wire will melt as soon as the current starts, so you have to make sure that the wire will maintain contact somehow, the same way that your hand pushes the wire against it.

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