Hot Dipped Aluzinc or Galvalum Steel Coils

Hot Dipped Aluzinc or Galvalum Steel Coils System 1

Hot Dipped Aluzinc or Galvalum Steel Coils

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 50000 m.t./month

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Product Description:

General Information

Thickness: 0.25mm-4.0mm

Width: 900mm-1250mm

Alu-zinc Coating: 50-150g/m2

Internal Diameter: 508mm/610mm

Coil Weight: 4-8MT

Quality: commercial and structural quality

Surface Treatment: oiled & dry, chromated, anti-finger, non-skin pass/ skin pass

Standard: JIS G 3321, ASTM A792M, EN 10215

Steel Grade: SGCC, SGCD, CS,FS,SS，DX51D+Z DX52D+Z; S200GD, S220GD, S280GD, S350GD

Package: full wrapped with anti-damped paper inside, iron sheet wrapped outside, and bundled by iron strips

Technical Data

Chemical Composition	C	Si	Mn	P	S
Chemical Composition	0.04-0.06%	0.01-0.03%	0.18-0.22%	0.014-0.016%	0.006%-0.009%

Technical Data
Yield Strength	(Mpa) 280-320
Tensile Strength	(Mpa) 340-390
Elongation	20%-30%
Out-of-square	not exceed 1% Flatness
Bow	15mmmax
Edge Wave	9mmmax
Centre Buckle	8mmmax
Bending At 180 Degree	no crack, peeling and fraction

Application

Aluzinc Steel can be widely used in transportation, light industry, civil usage and farming. It is also the perfect building material in construction for making roofing tile, steel profiles for wall partition, T-bar, studs, fireproof door, air conditioning duct and home appliance.

Q: How are steel coils inspected for thickness?: Steel coils are inspected for thickness using various methods to ensure their quality and compliance with industry standards. One common method is using a non-contact laser measurement system. In this process, a laser beam is directed towards the surface of the steel coil, and the time it takes for the beam to reflect back is measured. By accurately calculating the time taken, the thickness of the steel coil can be determined. Another method involves using ultrasonic technology. Ultrasonic sensors are used to emit high-frequency sound waves that penetrate the coil. These sound waves bounce back differently depending on the thickness of the steel, allowing the sensors to measure the thickness accurately. Additionally, some manufacturers may opt for an eddy current testing method. This technique involves passing an alternating current through a coil, creating a magnetic field. The thickness of the steel coil affects the impedance of the coil, which can be measured. By analyzing the changes in impedance, the thickness of the steel coil can be evaluated. Furthermore, some companies employ a mechanical method called the caliper method. This method involves using a caliper gauge to physically measure the thickness of the steel coil by applying pressure to the coil and reading the measurement on the caliper. Regardless of the method used, it is crucial for steel coils to be inspected for thickness to ensure they meet the required specifications and provide the desired performance in various applications.

Q: How are steel coils inspected for coil set?: Steel coils are inspected for coil set using a variety of methods and equipment. Coil set refers to the curvature or shape of the coil, which can impact its performance and usability in various applications. One common method of inspecting steel coils for coil set is through visual inspection. Experienced operators or inspectors carefully examine the coils for any visible deformities or irregularities in their shape. This can be done by unrolling a portion of the coil and checking for any signs of buckling, twisting, or unevenness. Visual inspection is a straightforward and cost-effective way to identify obvious coil set issues. In addition to visual inspection, more advanced techniques are also used to accurately measure and quantify coil set. One such method is the use of a straight edge or a template. The straight edge is placed along the length or width of the unrolled portion of the coil, and any gaps or deviations from the straight edge indicate the presence of coil set. This method provides a more precise measurement of the extent and severity of the coil set. Another common technique is the use of specialized tools such as a non-contact laser measurement system. This system utilizes lasers to project a line on the surface of the coil and measures the distance between the line and the coil. Any variations in this distance indicate the presence of coil set. This method is highly accurate and provides detailed data about the coil's shape and curvature. Other methods may include using mechanical devices such as rollers or tensioners to unroll and measure the coil's shape. These devices apply controlled pressure to the coil to straighten it out, and any resistance or deviations encountered during the process are indications of coil set. Overall, the inspection of steel coils for coil set involves a combination of visual examination and precise measurement techniques. These methods help identify and quantify any deformities or irregularities in the coil's shape, allowing manufacturers and customers to make informed decisions about the usability and quality of the steel coils.

Q: If steel content is too cheap, what content should I be looking for? I don't think I could find something like a VG-10 here...: Confusion Sucks. Why are you going into all this crap over the content of steel in the knives, your only confusing yourself. I recommend you go to a chef's supply or a good store that sells chef's utensil's and knows what he is talking about, and look at something that is comfortable for you. Chris

Q: What are the different methods of annealing steel coils?: There are several different methods of annealing steel coils, each with its own advantages and applications. The main methods include full annealing, process annealing, and spheroidize annealing. Full annealing is the most common method and involves heating the steel coils to a temperature above its critical point, typically between 800 and 900 degrees Celsius (1472 and 1652 degrees Fahrenheit), and then slowly cooling it down in a controlled manner. This process helps to refine the grain structure of the steel, making it softer and more ductile. Full annealing is often used to relieve internal stresses, improve machinability, and enhance the overall mechanical properties of the steel. Process annealing, also known as subcritical annealing or stress relief annealing, is a method used to reduce the hardness and brittleness of steel coils. It involves heating the coils to a temperature below its critical point, typically between 550 and 650 degrees Celsius (1022 and 1202 degrees Fahrenheit), and then slowly cooling them down. This process helps to relieve internal stresses that may have developed during previous manufacturing processes, such as cold working or welding. Process annealing is commonly used to improve the formability and toughness of steel coils. Spheroidize annealing is a specific type of annealing that is used to soften high carbon and alloy steels. It involves heating the steel coils to a temperature slightly below its critical point, typically between 650 and 700 degrees Celsius (1202 and 1292 degrees Fahrenheit), and then holding it at that temperature for a prolonged period of time. This allows the carbides within the steel to transform into rounded or spheroidal shapes, which increases the steel's machinability and ductility. Spheroidize annealing is often employed in the production of cutting tools, bearings, and other applications where improved machinability is desired. In addition to these main methods, there are also variations and specialized techniques that can be used for specific purposes, such as recrystallization annealing, intercritical annealing, and solution annealing. Each method has its own set of parameters and temperature ranges, and the choice of annealing method depends on factors such as the type of steel, desired mechanical properties, and the intended application of the steel coils.

Q: What are the common surface defects found in steel coils?: Some common surface defects found in steel coils include rust, scratches, dents, pits, and mill scale.

Q: How are steel coils different from steel sheets?: Steel coils and steel sheets are different in terms of their shape and size. Steel coils are typically long and cylindrical, resembling a large spool, whereas steel sheets are flat and rectangular. Steel coils are often used in industrial applications such as manufacturing and construction, where they can be unrolled and cut into smaller pieces. On the other hand, steel sheets are commonly used in architectural and decorative purposes, such as roofing, cladding, or fabrication of appliances and furniture.

Q: How are steel coils processed for different levels of hardness?: Different levels of hardness can be attained in steel coils using a variety of methods. One common approach is heat treatment, in which the coils are heated to a specific temperature and then rapidly cooled to modify their microstructure and achieve the desired hardness. The heat treatment process can encompass quenching, tempering, or annealing, depending on the desired hardness level. Quenching involves quick cooling of the coils in a liquid medium like water or oil to achieve a high hardness level. On the other hand, tempering requires reheating the coils to a lower temperature and gradually cooling them to attain a desired balance between hardness and toughness. Annealing, on the other hand, involves heating the coils to a specific temperature followed by slow cooling to release internal stresses and obtain a softer and more malleable material. Additionally, mechanical processes like cold rolling or cold working can be employed to enhance the hardness of steel coils. These processes involve applying compressive forces to the coils, causing the material to deform and resulting in increased hardness. Overall, achieving different hardness levels in steel coils requires meticulous control of temperature, cooling rate, and mechanical forces to obtain the desired properties for specific applications.

Q: What are the main properties of steel coils?: Steel coils have several main properties that make them highly desirable for a wide range of applications. Firstly, steel coils are known for their exceptional strength and durability. They have a high tensile strength, meaning they can withstand heavy loads and resist deformation. This makes steel coils ideal for applications that require structural integrity and reliability. Secondly, steel coils are highly resistant to corrosion. They have a natural ability to form a protective oxide layer on their surface, which prevents rust and other forms of corrosion. This property makes steel coils suitable for outdoor applications or environments with high humidity or exposure to chemicals. Additionally, steel coils have excellent thermal conductivity, allowing them to efficiently transfer heat. This property makes them commonly used in heating and cooling systems, as well as in the production of various appliances and machinery. Furthermore, steel coils have good formability, meaning they can be easily shaped or bent into different forms without losing their strength. This property makes them versatile and adaptable for various manufacturing processes, such as stamping, rolling, or welding. Lastly, steel coils are available in a wide range of grades and thicknesses, allowing for customization based on specific application requirements. This versatility makes steel coils suitable for a diverse range of industries, including automotive, construction, manufacturing, and energy. Overall, the main properties of steel coils include strength, durability, corrosion resistance, thermal conductivity, formability, and versatility. These properties make steel coils a popular and reliable choice for a multitude of applications.

Q: How did the growth of the steel industry influence the development of other industries?: At least three ways: 1. Steel as a material that other industries could use to do things that couldn't be done before (for example, construction (skyscrapers, long bridges, etc.)) or could now be done at much lower cost and hence increased the size of the industry (automobiles, bearings, etc.)

Q: i heard steel type is good and i don't have any i have defeated all the trainers up to the icicle badge (i have got the icicle badge but not the one after) where can i get one?: you can get a steelix at the cave just before the elite four. but if you have wifi, you can trade for one.

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