Prime quality prepainted galvanized steel 730mm

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 m.t.
Supply Capability:
10000 m.t./month
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Construction building material galvanized color prepainted cold

rolled steel coil

 

Prepainted steel sheet is coated with organic layer, which provides higher anti-corrosion property and

a longer lifespan than that of galvanized steel sheets.

 

The base metals for prepainted steel sheet consist of cold-rolled, HDG electro-galvanized and hot-dip

Alu-zinc coated. The finish coats of prepainted steel sheets can be classified into groups as follows:

polyester, silicon modified polyesters, polyvinylidene fluoride, high-durability polyester, etc

Prime quality prepainted galvanized steel 730mm

 

Standard and Grade :

Pre-paint galvanized steel coil



ASTM A755M-03

EN10169:2006

JISG 3312-2012

Commercial quality

                  CS

DX51D+Z

CGCC

 

 

 

Structure steel

SS GRADE 230

S220GD+Z

CGC340

SS GRADE 255

S250GD+Z

CGC400

SS GRADE 275

S280GD+Z

CGC440

SS GRADE 340

S320GD+Z

CGC490

SS GRADE550

S350GD+Z

CGC570


S550GD+Z


Application:

Outdoor

Roof, roof structure, surface sheet of balcony, frame of window, door of garage, rolled shutter door, booth, Persian blinds, cabana, etc

Indoor

Door, isolater, frame of door, light steel structure of house, home electronic appliances, ect.

Specifications

Commodity Name: Prepainted Galvanized Steel Coil

Standard: AISI, ASTM, DIN, GB, JIS   

Grade: TDC52D+Z   

Thickness 0.13-8.0mm  

Width:600mm-1350mm

Zinc Coating:275g/m2

Polyester Coating Thickness:Top and Back coating thickness depend by Buyer Requirement.

Polyester Coating Type:2/2,1/2m,1/2.

Polyester Type: Polyester, silicone modified polyester, high durability polyester (HDP), polyvinylidene fluoride (PVDF)

Unit Roll Weight:5-20tons

Place of Origin Shanghai , China (Mainland)  

Surface Treatment :Color Coated

Manufacture Progress:HRC-CRC-GALVANIZED-COLOR COATED  

Application : Construction, electrical, transportation, steel plant, composite board plant, steel tile factory  

Payment & Shipping Terms:T/T ,L/C, and FOB CHINA 

Minimum Order Quantity: 25Tons  

Packge Type: Moisture-proof paper inner,Steel outside,Bundle by steel rope.

Package in Container : Wood as a foot pad, wire rope reinforcement,PPGI steel coil tied together by steel rope.


Q:
There are several testing methods used for steel billets to ensure their quality and suitability for various applications. These methods include: 1. Visual Inspection: This is the simplest and most common method used to assess the overall quality and surface condition of steel billets. Inspectors visually examine the billets for any visible defects such as cracks, surface irregularities, or foreign materials. 2. Dimensional Inspection: Steel billets must meet specific dimensional requirements. Dimensional inspection involves measuring the length, width, and height of the billets using calibrated tools to ensure they meet the specified tolerances. 3. Ultrasonic Testing: Ultrasonic testing is a non-destructive testing method that uses high-frequency sound waves to detect any internal defects in the billets. A transducer is used to send sound waves into the material, and any reflected waves are analyzed for indications of flaws or inconsistencies. 4. Magnetic Particle Inspection: This method is primarily used to detect surface and near-surface defects in steel billets. A magnetic field is applied to the billet, and a magnetic particle solution is then applied to the surface. Any defects or cracks will cause the particles to collect and create visible indications. 5. Eddy Current Testing: Eddy current testing involves passing an alternating current through a probe, which generates an electromagnetic field. When the probe is placed near the billet's surface, any changes in the electrical conductivity or magnetic permeability of the material will create eddy currents, indicating the presence of defects. 6. Chemical Analysis: Chemical analysis is performed to determine the composition of the steel billets, including the percentage of various elements such as carbon, manganese, silicon, and others. This analysis ensures that the billets meet the specified chemical composition required for their intended use. 7. Tensile Testing: Tensile testing measures the mechanical properties of steel billets, including their strength, ductility, and elasticity. A sample is taken from the billet and subjected to tension until it fractures. The force applied and the resulting elongation or deformation are measured to determine the billet's mechanical properties. By utilizing these testing methods, steel billets can be thoroughly assessed for any defects, dimensional discrepancies, and material properties, ensuring their compliance with industry standards and meeting the specific requirements for their intended applications.
Q:
Steel billets are a crucial component in various industries, serving as semi-finished steel products. They have multiple applications, including but not limited to: 1. Steel production: Steel billets act as the starting point for manufacturing different steel products. They are used to create bars, rods, wire, and structural sections, among other steel items. 2. Construction industry: The construction sector heavily relies on steel billets for producing beams, columns, and other structural elements. These billets are often shaped and sized according to specific project requirements. 3. Automotive industry: Steel billets find use in the automotive industry for fabricating various components, such as crankshafts, camshafts, axles, and gears. These billets undergo further processing to achieve the desired shapes and sizes for these components. 4. Machinery and equipment manufacturing: Machinery and equipment manufacturers employ steel billets to create high-strength and durable parts and components like gears, shafts, and bearings. 5. Pipe and tube manufacturing: Steel billets are indispensable raw materials in the production of pipes and tubes. They are either heated and pierced to create seamless tubes or rolled and welded to manufacture welded tubes. These tubes have applications in industries such as oil and gas, construction, and automotive. 6. Forging industry: The forging industry widely utilizes steel billets to forge components like crankshafts, connecting rods, and valves. The billets are heated and shaped using pressure and heat to achieve the desired strength and shape. 7. Shipbuilding industry: In the shipbuilding industry, steel billets are employed for constructing ship hulls, frames, and other structural components. These billets provide the required strength and durability for marine applications. To conclude, steel billets are the primary raw material for manufacturing a wide range of steel products used across industries such as construction, automotive, machinery manufacturing, pipe and tube manufacturing, forging, and shipbuilding.
Q:
There are several advantages of using steel billets over other materials. Firstly, steel billets have excellent strength and durability, making them ideal for use in various industries including construction, automotive, and manufacturing. Secondly, steel billets can be easily shaped and molded into different forms, allowing for versatility in design and application. Additionally, steel billets have high resistance to corrosion and are capable of withstanding extreme temperatures, making them suitable for both indoor and outdoor use. Lastly, steel billets are readily available in large quantities and are cost-effective, making them a preferred choice for many applications.
Q:
Yes, steel billets can be affected by extreme temperatures. High temperatures can cause the billets to soften and become more malleable, making them easier to shape or deform. On the other hand, extremely low temperatures can make the steel brittle and prone to cracking or fracturing. Therefore, it is important to carefully control and monitor the temperature conditions during the production and processing of steel billets.
Q:
Steel billets play a crucial role in the production of railway wagons, serving as the primary raw material for manufacturing various wagon components. Essentially, steel billets are semi-finished steel products that are cast into specific shapes, typically squares or rectangles, and serve as the starting point for further processing. In the production process, steel billets are first heated to a high temperature and then passed through rolling mills to shape them into desired forms such as beams, plates, angles, channels, or other structural components. These components form the structural framework of the wagons, providing strength, durability, and stability. The exceptional strength and ability of steel billets to withstand heavy loads make them ideal for railway applications. They possess excellent mechanical properties, including high tensile strength, ensuring the wagons can endure the stresses and strains experienced during operation. The use of steel billets also allows for flexibility in design and customization, as they can be easily shaped and formed according to specific requirements. Manufacturers can produce railway wagons of various sizes, configurations, and capacities to cater to different transportation needs. Furthermore, steel billets are highly resistant to corrosion, which is particularly important for railway wagons exposed to harsh environmental conditions. This resistance helps maintain the structural integrity of the wagons, preventing premature deterioration and ensuring their long service life. Overall, steel billets are indispensable in the production of railway wagons. They provide the necessary strength, durability, and customization options required for manufacturing robust and reliable wagons that can withstand the demanding conditions of railway transportation.
Q:
Steel billets are semi-finished metal products that serve as the starting material for various steel products. They possess several important properties that make them suitable for further processing and shaping into different forms. Firstly, steel billets exhibit a high level of strength and durability. This is primarily due to the composition of steel, which is predominantly made up of iron with small amounts of carbon and other elements. This composition gives steel billets excellent mechanical properties, including high tensile strength and resistance to deformation. Secondly, steel billets have good heat transfer properties. Steel is known for its ability to conduct heat efficiently, which makes it an ideal material for applications where thermal conductivity is required, such as in the manufacturing of automotive parts or construction materials. Additionally, steel billets possess good machinability. Machinability refers to the ease with which a material can be shaped or formed using various machining processes. Steel billets can be easily cut, drilled, and shaped into desired forms, allowing for efficient processing and fabrication. Furthermore, steel billets have excellent weldability. Steel is known for its compatibility with welding processes, allowing for the joining of different steel components or the repair of damaged steel structures. This property is crucial in various industries, including construction, automotive, and shipbuilding. Lastly, steel billets have a high level of recyclability. Steel is one of the most recycled materials globally, with a significant portion of steel production being derived from recycled steel. This makes steel billets an environmentally friendly choice, as they can be recycled and repurposed multiple times without losing their properties. In summary, the main properties of steel billets include high strength and durability, good heat transfer properties, excellent machinability and weldability, and a high level of recyclability. These properties make steel billets a versatile and widely used material in various industries, ranging from construction and manufacturing to automotive and aerospace.
Q:
Steel billets play a crucial role in the manufacturing of construction machinery as they serve as the raw material for producing various components and structures. These billets are initially heated and then shaped or machined into different forms such as plates, beams, or rods, which are essential in constructing the frames, chassis, and other structural parts of construction machinery. The high strength and durability of steel make it ideal for withstanding heavy loads and harsh working conditions, ensuring the reliability and longevity of construction machinery.
Q:
The sizes of steel billets can differ depending on the specific industry and application. However, there are various standard sizes that are frequently utilized. In the construction sector, steel billets commonly measure between 100mm x 100mm and 200mm x 200mm. These sizes are often employed in the fabrication of structural steel, such as beams, columns, and other load-bearing elements. For the production of automotive parts, the usual sizes of steel billets typically range from 150mm x 150mm to 250mm x 250mm. These sizes are commonly employed in forging and machining processes to manufacture components like crankshafts, connecting rods, and gears. In the oil and gas industry, larger steel billets are often necessary for manufacturing pipes and tubes. The typical sizes for this purpose range from 350mm x 350mm to 500mm x 500mm. These larger billets enable the production of seamless pipes capable of withstanding high-pressure environments. It should be noted that these are only general sizes and can vary depending on specific project requirements and regional standards. Additionally, customized sizes can also be produced based on the customer's requirements.
Q:
Steel billets can suffer from a range of defects, including surface defects, internal defects, and segregations. Surface defects refer to any abnormalities, cracks, or discontinuities that can be found on the outer surface of the steel billet. These defects encompass scale, scratches, pits, and surface cracks. They are typically caused by mishandling during transportation or storage, improper handling during manufacturing, or insufficient surface cleaning. Internal defects are flaws or imperfections that exist within the inner structure of the steel billet. These defects include inclusions, cavities, blowholes, porosity, and non-metallic inclusions. They can be a result of improper melting and casting processes, incorrect cooling and solidification, or the presence of impurities in the steel. Segregations involve the uneven distribution of elements or impurities within the steel billet. As a consequence, certain sections of the billet may possess different chemical compositions or mechanical properties. Inadequate mixing during the melting process, improper pouring and solidification, or the presence of impurities in the raw materials can cause segregations. To ensure the quality and integrity of steel billets, it is essential to detect and rectify these defects. Various non-destructive testing techniques, such as visual inspection, ultrasonic testing, magnetic particle testing, and eddy current testing, are employed to identify and characterize these defects. Once identified, appropriate measures, including grinding, machining, or heat treatment, can be implemented to eliminate or mitigate the defects.
Q:
To ensure quality and compliance with industry standards, various methods and techniques are employed to inspect the surface finish of steel billets. Visual inspection is a common approach, where trained inspectors carefully examine the billet's surface for any defects, such as scratches, pits, cracks, or irregularities. This examination is typically conducted under appropriate lighting conditions to enhance defect visibility. Another method employed is non-destructive testing (NDT), which encompasses techniques like magnetic particle inspection (MPI) and liquid penetrant inspection (LPI). MPI involves the application of a magnetic field to the billet, followed by the use of a magnetic particle suspension to reveal surface defects by adhering to them. On the other hand, LPI involves the application of a liquid penetrant solution to the billet's surface, which is subsequently removed and followed by the application of a developer to highlight any defects. Ultrasonic testing (UT) is also commonly utilized to inspect the surface finish of steel billets. UT employs high-frequency sound waves transmitted through the billet, with any reflected waves analyzed to detect surface or subsurface defects. This method provides detailed information about the surface condition and can even detect minute flaws. Additionally, surface profilometers can be employed to measure the roughness of the billet's surface. These devices utilize a stylus or laser to measure height variations on the surface, thereby providing data on roughness and texture. In summary, a combination of visual inspection, NDT techniques, and surface profilometry is employed to conduct thorough inspections of steel billets' surface finish. These inspections play a crucial role in ensuring that the billets meet the required surface finish standards and are suitable for further processing or manufacturing.

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