Prepainted Aluzinc Steel in coil High Quality

Prepainted Aluzinc Steel in coil High Quality System 1

Prepainted Aluzinc Steel in coil High Quality

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Loading Port:: Shanghai

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< p="">

Q: How do steel coils contribute to the construction industry?: Steel coils are a crucial component in the construction industry as they are used to manufacture various structural elements like beams, columns, and girders. These coils are transformed into different shapes and sizes, providing the necessary strength and durability required for construction projects. Additionally, steel coils are also used in the production of roofing, siding, and other building materials, making them an essential resource in the construction industry.

Q: What minerals are mixed to make steel?: W - weldable steel WT- Weldable Noctch-tough steel R - Atomospheric corrosion-resistant steel A - Atomospheric corrosion-resistant steel weldable steel R - Atomospheric corrosion-resistant steel weldable Notch-tough steel Q- Quenched and tempered Low-alloy Steel QT-Quenched and tempered Low-alloy Steel Notch-tough steel For W and WT: C, Mn, P, S, Si, small quanties Cb,V,Al For R, A, AT: C, Mn, P, S, Si, Cr, Ni, Cu small quanties Cb,V,Al For Q: C, Mn, P, S, Si, Cr, Ni, Cu, and small amounts of boron See CSA G40.21 if you want more info

Q: The strip tower height: Defects: cold-rolled steel sheet (coil)

Q: I don't know it is low alloy steel or high allow steel or medium carbon steel: Yes,30CrNiMo8 is a high grade alloy steel. *These steels generally contain higher carbon concentration (0.25%). As they are hardenable their mechanical properties can be tailored to specific needs by suitable adjustment of the annealing temperature. Finished products can be hardened to have a high surface hardness in combination with a tough and ductile core. The mechanical properties increase with increasing carbon concentration. Cr and Ni add additional improvements in properties. The Mn grades are a little cheaper. V and Mo add improved temperature resistance. The grades Cxx are developed for less stringent quality requirements but are cheaper.

Q: I wanted to get a cheapo ring and I found one I like, but it's stainless steel. Is that bad? Will it get dull and tarnished fast?: go with silver its cheap but not as bad as steel

Q: How are steel coils used in the production of metal signs?: Steel coils are used in the production of metal signs as they are processed and shaped into flat sheets that serve as the base material for the signs. These coils are unrolled and flattened, then cut and formed into the desired shape before being painted or coated for aesthetics and protection.

Q: How are steel coils used in the manufacturing of safety systems?: Steel coils are used in the manufacturing of safety systems as they serve as a key component for reinforcement and support. These coils are often used in the construction of structural elements such as beams, columns, and frames, providing strength and stability to ensure the safety and durability of the overall system. Additionally, steel coils are utilized in the production of safety equipment such as guardrails, barricades, and safety barriers, offering protection and preventing accidents in various industries and applications.

Q: What are the environmental impacts of producing steel coils?: The production of steel coils has several environmental impacts. Firstly, it involves the extraction of iron ore, which requires mining activities. These mining operations can lead to deforestation, habitat destruction, and soil erosion. Additionally, the extraction and processing of iron ore require large amounts of energy, contributing to greenhouse gas emissions and air pollution. Furthermore, the production of steel coils involves several stages, such as smelting and refining, which are energy-intensive and emit significant amounts of carbon dioxide, sulfur dioxide, and nitrogen oxides. These emissions contribute to air pollution, acid rain, and climate change. Water consumption is another notable environmental impact. Steel production requires large volumes of water for cooling and processing purposes. This high water demand can strain local water resources and potentially lead to water scarcity or pollution if not managed properly. Moreover, the steel industry generates substantial amounts of waste and by-products, such as slag, dust, and sludge. Proper disposal and treatment of these waste materials are crucial to prevent soil and water contamination. Lastly, transportation plays a role in the environmental impact of steel coil production. The transportation of raw materials and finished products can contribute to carbon emissions and air pollution, especially if long distances are involved. To mitigate these environmental impacts, various measures can be taken. Implementing more efficient production processes, such as recycling and using renewable energy sources, can reduce energy consumption and emissions. Additionally, improving waste management practices, investing in water conservation technologies, and optimizing transportation logistics can help minimize the environmental footprint of steel coil production.

Q: I know that the steel is significantly harder than when air cooled, but why is the quenched steel harder?: When steel is slowly cooled, lots of carbon diffusion takes place because it is not very soluble in steel at room temperature. The carbon is in solution at high temperatures, and is rejected out of the lattice as it cools. And when this happens, the microstructure will consist of ferrite and pearlite, and the lattice structure will be base centered cubic (bcc). If it is cooled fast enough, then the carbon gets trapped in the interstitial sites of the lattice and distorts it to a body centered tetragonal (same as bcc, but elongated in one direction) This elongation strains the lattice and makes it harder. Also, when cooled fast enough the atoms do not have time to diffuse like they normally would and they shear into place. This forms the hard phase of martensite that is desired of heat treated steel. But then it must be tempered back some because it is too brittle.

Q: What are the common transportation defects in steel coils?: There are several common transportation defects that can occur in steel coils. One of the most common is coil damage caused by improper handling or securing during transportation. This can result in dents, scratches, or even tears in the steel. Another common defect is coil edge damage, which can occur if the coils are not properly protected or if they rub against each other during transit. This can lead to deformation or even breakage of the coil edges. Additionally, coil shifting is another common defect, which happens when the coils are not properly secured or braced, causing them to move and shift during transportation. This can result in misalignment or damage to the coils. Finally, coil corrosion is a common defect that can occur if the coils are exposed to moisture or other corrosive elements during transportation. This can lead to rust and deterioration of the steel. Overall, proper handling, securing, and protection measures are crucial in order to prevent these common transportation defects in steel coils.

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