High Quality Prepaint Aluzinc Steel Coil

High Quality Prepaint Aluzinc Steel Coil System 1

High Quality Prepaint Aluzinc Steel Coil

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 80000 m.t./month

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Product Description:

Specification

1. Thickness: 0.3-0.8mm

2. Width: 914-1250mm

3. Inner Diameter: 508mm

4. Weight of Steel Coil: 3-15MT

5. Available Dipped Layer: 50-150g/m2

6. Surface Texture: Normal Coated

7. Type of coating structure: 2/1 Coat the top surface of the steel sheet twice, coat the bottom surface once, and bake the sheet twice.

8. Front Side Paint Thickness: 15-20μm (bottom paint+top paint)

9. Back Side Paint Thickness: 5-10μm

Mechanical Properties

1. Mechanical properties of base metals

Grade	Tensile Test
Grade	Yield Strength MPa	Tensile Strength MPa	Elongation A80mm % ≥
DC51D+Z	140-350	270-500	22
DC52D+Z	140-300	270-420	26
DC53D+Z	140-300	270-380	30

2. Common performance of front coating

(1). Thickness: ≥20μm

(2). Pencil Hardness: 2H

(3). 60° specular glossiness of coating: >60

(4). 180°bend: ≤3T

(5). Impact: ≥9J

(6). Salt Fog Resistant: ≥500h

(7). Color difference:<3ΔE

Q: What we have to keep in mind before buying a steel building?: Before okorder /... Hope this will prove helpful to you.

Q: How is the critical temperature of structural steel affected by fireproofing? What temperatures can fireproofed structural steel withstand?: This would depend upon the method of fireproofing. Steel used to be insulated with an asbestos coating. Of course the steel under the insulation had the same critical temperature as the uncoated steel but was protected from external heat by the insulation. More commonly it would be an alloy and there are so many that one could not guess except to say it should be higher than the original.

Q: What are the common defects in steel coil surface finishes?: Common defects in steel coil surface finishes include scratches, pits, roll marks, stains, and unevenness. These defects can be caused by various factors such as improper handling, processing issues, or equipment malfunction. These surface defects affect the aesthetics and quality of the steel coil, making it unsuitable for certain applications or requiring additional processing to rectify the defects.

Q: Can steel coils be stored in a corrosive environment?: Ideally, steel coils should not be stored in a corrosive environment as exposure to corrosive elements can lead to degradation and damage to the steel surface. Corrosion can weaken the structural integrity of the coils and affect their performance. To ensure the longevity and quality of the steel coils, it is best to store them in a dry and non-corrosive environment.

Q: Can steel coils be cut or trimmed after delivery?: Yes, steel coils can be cut or trimmed after delivery. This process is commonly known as slitting, where the steel coil is passed through a set of circular blades to create narrower strips of steel. Trimming can also be conducted to remove any unwanted edges or imperfections. Both cutting and trimming are common practices in the steel industry to meet specific size and shape requirements for various applications.

Q: I have a mountain bike w/ 26 wheels. My question is what's the biggest difference between aluminum vs. steel? If most of my riding is off-road, wouldn't the steel wheels be stronger/more durable?: Aluminum is by far the better choice for wheels, mirageguitarwork is right on the money with his description. One other thing that detracts from steel wheels is that they rust. Wheel builders used to chrome plate them, but all this did was add weight. The wheels would eventually still rust, and this weakens them even more.

Q: i want a good modern carbon steel (not stainless) knife. trying to keep it under 50$ also nothing to gruesome just a small pocket knife. thank you: Well, okorder /... They did make other folders in M2 steel, but the thing is those are out of production and the cost is very high. Spyderco made M4 steel folder knives, and so did Benchmade. Although,both are outside of 50$ budget. I guess Opinels are best option.

Q: What are the challenges in welding steel coils?: There are several challenges in welding steel coils that need to be addressed in order to ensure successful and high-quality welds. One of the main challenges is achieving proper joint preparation. Steel coils often have different surface conditions, such as rust, scale, or oil, which need to be cleaned or removed before welding. This requires extensive cleaning and preparation to ensure a clean and sound welding surface. Another challenge is the control of heat input. Steel coils are typically thin, and excessive heat can cause distortion, warping, or even burn-through. Welding operators need to carefully control the heat input to prevent these issues and maintain the integrity of the coils. Moreover, the presence of residual stresses is a significant challenge. Steel coils are often subjected to various stresses during manufacturing, transportation, and handling, which can lead to distortion or cracking during welding. Adequate preheating and post-weld heat treatment may be necessary to relieve these stresses and prevent any potential defects. Ensuring proper weld penetration is also crucial. Steel coils may have varying thicknesses, and achieving consistent and adequate weld penetration throughout the joint can be challenging. Welding operators need to choose the appropriate welding parameters and techniques to ensure complete fusion and a strong bond. Lastly, the size and weight of steel coils can pose logistical challenges during welding. Handling large and heavy coils requires specialized equipment and proper positioning to ensure safe and efficient welding. Additionally, the length of the coils may require multiple passes or continuous welding, which demands skilled operators and precise coordination. Overall, welding steel coils requires careful attention to joint preparation, heat control, stress relief, weld penetration, and logistical considerations. Overcoming these challenges ensures the production of high-quality and durable welded steel coils.

Q: I mean about if I had a piece of metal, how can i decide that's iron or steel?Sorry for bad English.: Iron and steel have different thermal expansions and specific heats. You could either heat it up and see how much it changes in length or you could put it in water inside a calorimeter and observe how much the temperature of the water changes

Q: iam talking abt carbon steel of composition:-C=0.15wt% Mn=0.60wt% P=0.035wt% S=0.04wt% Cu=0.20 (min)wt%....: The composition you mention is not a low carbon steel.The carbon and manganese content are high enough to mean that the crystal grain size will be small. A very large grain size is needed in steels for transformers,motors etc.The large grain size and lack of carbides in low silicon steels for magnetic purposes allows the easy movement of magnetic domain walls.Transformer steels typically have a carbon content of about 0.003% and 3.5%Si with the phosphorus and sulphur at a tenth of the levels you mention.The high Si content increases the electrical resistivity of the magnetic core and reduces the power loss from eddy currents(the core metal has voltages generated in it by the changing magnetic fields) and the power lost in eddy currents heats up a transformers core so it needs extra cooling;the loss is inversely proportional to the resistivity and 3.5%Si increases resistivity of iron by a very large amount.The presence of high silicon with ultra low carbon and manganese level allows the soft magnetic steels to be annealed at very high temperatures(850 to 1100deg C)without a phase change so that the crystals have 10,000 to 10,000,000 times the volume of the crystals in heat-treatable (Just)steel you mention.Fine for playing with and demonstrating electromagnetism but not as electrical engineering feedstuff.

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