Prime quality prepainted galvanized steel 740mm

Prime quality prepainted galvanized steel 740mm System 1

Prime quality prepainted galvanized steel 740mm System 2

Prime quality prepainted galvanized steel 740mm System 3

Prime quality prepainted galvanized steel 740mm System 4

Prime quality prepainted galvanized steel 740mm

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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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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

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:Can steel billets be used in the production of jewelry?: Steel billets are typically not used in the production of jewelry due to their composition and properties. Steel is an alloy primarily composed of iron and carbon, with additional elements such as manganese, chromium, and nickel. This composition gives steel its strength and durability, making it ideal for various industrial applications, but not for jewelry production. Jewelry is often crafted from precious metals like gold, silver, and platinum, which possess unique characteristics that make them suitable for adornment. These metals are malleable, meaning they can be easily shaped and molded into intricate designs. Additionally, they have a lustrous appearance and are resistant to tarnishing or corrosion. Steel, on the other hand, is much harder and less ductile compared to precious metals. It cannot be easily manipulated into delicate and intricate shapes required for jewelry making. Furthermore, steel has a dull gray color, which does not provide the desired aesthetic appeal in jewelry. While it is technically possible to create jewelry using steel billets, it is not a common practice due to the aforementioned reasons. Steel is primarily used in industries where its high strength and durability are necessary, such as construction, automotive, and machinery manufacturing.

Q:How are steel billets used in the manufacturing of machinery?: Steel billets are used in the manufacturing of machinery as a primary raw material. They are heated and shaped into various components, such as gears, shafts, and structural frames, which are then assembled to create the machinery. The high strength and durability of steel billets make them ideal for withstanding heavy loads and harsh working conditions, ensuring the reliability and longevity of the machinery.

Q:What are the common defects in steel billets during continuous casting?: Steel billets during continuous casting can experience various common defects. These defects include surface cracks, central segregation, inclusion defects, internal cracks, surface and subsurface defects, and pipe defects. Surface cracks are cracks that appear on the billet's outer surface. They can occur due to excessive cooling or improper mold lubrication. These cracks can weaken the structural integrity of the billet and potentially cause breakage during subsequent processing. Central segregation is a defect that arises from an uneven distribution of elements within the billet. This uneven distribution leads to variations in composition across the billet's cross-section. As a result, the billet may possess inconsistent mechanical properties, making it unsuitable for certain applications. Inclusion defects occur when non-metallic particles or impurities become trapped within the billet during casting. These particles can originate from the refractory lining, mold powder, or the steelmaking process itself. Inclusion defects weaken the material and diminish its overall quality. Internal cracks are cracks that develop within the billet's body. Thermal stresses or improper cooling are often the culprits behind these cracks. Detecting internal cracks visually is challenging, and they can compromise the structural integrity of the billet. Surface and subsurface defects encompass various issues such as surface depressions, oscillation marks, and hot tears. Surface depressions arise from excessive mold oscillation or poor mold conditions. Oscillation marks result from non-uniform mold oscillation, leading to uneven cooling and inconsistent billet dimensions. Hot tears occur when the billet contracts unevenly during solidification, resulting in cracks on the surface or subsurface. Pipe defects are hollow cavities that form within the billet during solidification. Shrinkage is the main cause of these cavities, and they can weaken the material. If these pipes propagate to the surface, they can cause breakage during subsequent processing. Overall, these defects pose significant challenges in producing high-quality steel billets. Continuous improvement in casting techniques, process control, and quality assurance measures are crucial in minimizing these defects and ensuring defect-free billet production.

Q:How do steel billets contribute to the manufacturing of sports equipment?: The manufacturing of sports equipment benefits greatly from the use of steel billets. Firstly, steel billets serve as the primary material for the production of steel bars and rods. These bars and rods are then utilized to create the framework and structure of sports equipment, including golf clubs, tennis rackets, and hockey sticks. The exceptional strength and durability of steel make it the perfect material for these applications, as it can withstand the intense impact forces and stresses that occur during sports activities. Furthermore, steel billets are also employed in the manufacturing of various components for sports equipment, such as weights, dumbbells, and barbells. These components necessitate a material with high density that can handle heavy loads, and steel provides the necessary strength and stability. Additionally, steel billets find use in the production of accessories for sports equipment, such as ball bearings, springs, and fasteners. Despite their small size, these components play a vital role in the overall performance and functionality of sports equipment. Steel's exceptional resistance to corrosion and its ability to endure extreme conditions make it the preferred choice, ensuring long-lasting and reliable performance. Moreover, steel billets enable the production of high-quality and precision-made parts for sports equipment. Steel's malleability and formability allow it to be shaped into various intricate designs and configurations, guaranteeing that sports equipment meets the specific requirements of athletes and performs optimally. In conclusion, steel billets are a crucial element in the manufacturing of sports equipment. Their strength, durability, versatility, and formability make them the ideal material for producing frames, components, and accessories that enhance the performance and longevity of sports equipment.

Q:What is the average weight of a steel billet?: The average weight of a steel billet can vary depending on its size and dimensions. However, a typical steel billet can weigh anywhere between 1,000 kilograms (2,204 pounds) to 5,000 kilograms (11,023 pounds). These weights are typical for industrial-grade steel billets used in various manufacturing processes such as forging, rolling, and extrusion. It's important to note that the weight of a steel billet can also be customized based on specific requirements and industry standards.

Q:What are the main factors affecting the fatigue strength of steel billets?: The main factors affecting the fatigue strength of steel billets include the material composition and quality, the presence of surface defects or imperfections, the applied stress levels, the frequency or rate of the applied cyclic loading, and the temperature conditions during the fatigue process.

Q:What is billet?: Steel billet is a product made by steel-making furnace by casting.The billet can be divided into two kinds from the manufacturing process, mould blank and continuous casting billet.

Q:What are the main factors that influence the strength of steel billets?: The strength of steel billets is impacted by various factors, including the chemical composition, heat treatment, and microstructure of the steel. The chemical composition plays a significant role in determining the strength of steel billets. Alloying elements like carbon, manganese, silicon, and chromium can enhance strength by forming solid solutions or precipitates that increase hardness and tensile strength. It is crucial to control impurity levels and maintain the desired balance of alloying elements to achieve the desired strength properties. Heat treatment is another important factor that affects the strength of steel billets. This process involves heating the steel to a specific temperature and then cooling it at a controlled rate. It significantly impacts the microstructure of the steel, which ultimately influences its strength. For example, quenching and tempering can result in the formation of desired microstructures like martensite or bainite, which enhance strength and toughness. The microstructure of steel billets also plays a crucial role in determining their strength. The arrangement of crystal grains and the presence of different phases within the steel greatly influence its mechanical properties. Fine-grained structures generally exhibit higher strength due to a greater number of grain boundaries, which inhibit dislocation movement and enhance strength. Additionally, the presence of specific microstructural features like precipitates or second-phase particles can contribute to the strength of steel billets. Other factors such as the manufacturing process, cooling rate during solidification, and mechanical working (such as rolling or extrusion) can also affect the strength of steel billets. These factors impact grain size, grain boundary density, and defect concentration, all of which influence the mechanical properties of the steel. In conclusion, the strength of steel billets is influenced by the chemical composition, heat treatment, and microstructure of the steel. These factors can be carefully controlled and optimized to achieve the desired strength properties for various applications.

Q:What is the typical density of a steel billet?: The typical density of a steel billet depends on the specific type of steel being used. However, in general, the density of a steel billet ranges from 7.75 to 8.05 grams per cubic centimeter (g/cm³). This density can vary slightly depending on the composition and quality of the steel. It is important to note that the density of a steel billet can also be affected by any impurities or contaminants present in the material.

Q:What is the active carbon. What is the difference with the charcoal?: Activated carbon activated carbon after activation of the solid carbon black porous. A general powder, granular or pellet, carbon as a main component, also containing a small amount of oxygen, hydrogen, nitrogen, sulfur and chlorine. The early production of activated carbon as raw materials for wood, hard shell or animal bone, later used by coal production method a: the steam and gas activation method. The use of water vapor or carbon dioxide at 850 ~ 900 C carbon activation.

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