prepainted steel coil JIS G 3312 System 1

prepainted steel coil JIS G 3312 System 2

prepainted steel coil JIS G 3312

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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PREPAINTED STEEL COIL

Packaging & Delivery

Packaging Detail: seaworthy export package

Delivery Detail: on request

Specifications

1. more than 10 years’ experience on this field

2. advanced equipments

3. competitive price

4. soonest delivery

Product Description :

Commodity

PREPAINTED STEEL COIL

Technical Standard: JIS 3312

Grade：CGCC

Types:Commercial / Drawing / Deep Drawing / Structural quality

Width: 900mm/1000mm/1219mm/1200mm/1220mm/1250mm

Thickness: 0.2mm~4.0mm

Type of coating: galvanized

Zinc coating: Z40-275g/m2,Z40-Z450g/m2

ID coil: 508mm or 610mm

Coil weight: 3-10/MT per coil

Package:Properly packed for ocean freight exportation in 20''container

Application::home appliances, constructions, building, machineries

Our Advantages :

1. Expertise:
More than 10 years of manufacture: we know how to properly handle every step of production.
2. Competitive price:
We can offer competitive prices to our customers.
3. Accuracy:
We have excellent technicians and leaders, which can ensure our products are exactly what you want.
4. Materials:
All galvanized steel coils are made of high-quality raw materials.
5. Certificate:
Our products are certified by ISO9001.
6. Productivity:
We have large-scales of production lines,, which can guarantee all your orders will be finished in earliest time.

Hr CGL Technical Process:

Coil loading-> uncoiling-> cutting-> welding-> entry accumulator-> Heating and deoxidization-> galvanizing-> air cooling->water quenching-> air dryer-> tension leveler-> Passivation->air dryer->exit accumulator-> oiling-> cutting-> recoiling->coil unloading-> packing

The furnace heating style: improved Sendzimir heating technology

Hourly output: max.76.3t/h

Process after coating: tension leveling, Passivation or oiling

Our Service

Our quality

Test Equipments of Prepainted Galvanized Steel Coil : Salt-spray tester; Atomic absorption spectrophotometer; Rockwell typer hardness tester; Tensile test machine; Metrohm titration; Laboratory Bend test machine.

Our packing

Properly packed for ocean freight exportation in 20''container, galvanized metal fluted rings on inner and outer edges, galvanized metal & waterproof paper wall protection disk, galvanized metal & waterproof paper around circumference.

R&D department

R&D department concentrates on researching and developing reliable products with best quality. The quality department test and control every process of production to guarantee the best quality of product

Q: How are steel strips formed into various shapes?: Steel strips are formed into various shapes through a process known as metal forming. There are several techniques that can be used to achieve this, including hot rolling, cold rolling, and stamping. Hot rolling is a process where steel strips are heated above their recrystallization temperature and then passed through a series of rollers to shape them into the desired form. The high temperature makes the steel more malleable, allowing it to be easily bent and formed. This method is commonly used to produce shapes such as bars, beams, and tubes. Cold rolling, on the other hand, involves passing the steel strips through a set of rollers at room temperature. This process is typically used to create thinner and more precise shapes, such as sheets and foils. Cold rolling can also be used to improve the surface finish and mechanical properties of the steel strips. Stamping is yet another method used to form steel strips into various shapes. In this process, a die is used to press the steel strip into a specific shape. The die is usually made of hardened steel and has the desired shape engraved on it. The steel strip is placed between the die and a punch, which exerts pressure to deform the material and reproduce the shape of the die. Overall, steel strips can be formed into various shapes through the application of heat, pressure, and mechanical force. The specific method used depends on the desired shape, size, and properties of the final product.

Q: How are steel strips processed for waterjet cutting?: Precision and accuracy are ensured in the waterjet cutting process of steel strips through a series of steps. Initially, the surfaces of the steel strips are cleaned and prepared by eliminating any dirt, debris, or rust. The objective is to establish a clean and smooth cutting surface. Once the cleaning process is completed, the steel strips are placed onto a waterjet cutting machine. This machine is equipped with a high-pressure waterjet nozzle that expels a stream of water combined with an abrasive material, typically garnet, at incredibly high speeds. The waterjet possesses the capability of cutting the steel strips with exceptional precision. Prior to commencing the actual cutting process, the waterjet cutting machine is programmed with specific cutting parameters. These parameters encompass the desired dimensions, shapes, and angles of the steel strips. By using specialized software, the machine operator inputs these parameters, which are then translated into instructions for the waterjet cutting machine. When the cutting parameters have been set, the machine operator initiates the cutting process. The high-pressure waterjet is directed onto the steel strip, successfully cutting through it with extreme accuracy. The waterjet has the capacity to cut through steel of various thicknesses, ranging from thin strips to thicker plates, depending on the capabilities of the machine. Throughout the cutting process, continuous monitoring of the waterjet ensures that the desired dimensions and shapes are being attained. If necessary, the machine operator may make adjustments to the cutting parameters in order to maintain accuracy. Upon completion of the waterjet cutting, the steel strips are meticulously extracted from the machine. Additional processing, such as deburring or sanding, may be conducted to guarantee a smooth and refined edge. In conclusion, the process of waterjet cutting steel strips encompasses the cleaning and preparation of the strips, programming the cutting parameters, and utilizing a high-pressure waterjet for precise cutting of the steel. This method is renowned for its accuracy, versatility, and ability to cut through steel of varying thicknesses.

Q: How do steel strips compare to other materials in terms of cost?: Steel strips are typically more cost-effective compared to other materials due to their durability, versatility, and abundance.

Q: How are steel strips waterjet cut?: Using a highly pressurized stream of water mixed with abrasive particles, steel strips undergo waterjet cutting. This involves directing the waterjet onto the steel strip, which is held in place by a cutting bed or fixture. The high-pressure pump generates the waterjet, typically with a range of 30,000 to 90,000 psi. To create a narrow and high-velocity stream, the waterjet is focused through a small orifice, usually around 0.010 to 0.060 inches in diameter. To cut the steel strip, a computer-controlled system moves the waterjet along the desired cutting path. As the high-pressure waterjet stream makes contact, it erodes the steel material and effectively slices through the strip. The addition of abrasive particles, such as garnet, helps accelerate the erosion of the steel and enhances the cutting process. Waterjet cutting offers numerous advantages for cutting steel strips. It provides a precise and clean cut with minimal heat-affected zones, which prevents distortion or warping of the steel. Moreover, the process can cut through various thicknesses of steel strips, ranging from thin gauges to thick plates. Additionally, waterjet cutting is a versatile method that can handle complex shapes and intricate designs, making it suitable for a wide range of applications in industries such as automotive, aerospace, and manufacturing. In conclusion, waterjet cutting of steel strips is an efficient and accurate process that utilizes the power of water and abrasive particles to achieve precise and high-quality cuts.

Q: Is the coil strip? Is hot rolled coil and hot rolled strip the same?: We found differences between strip and hot rolled strip width is below 1000mm, so it can be distinguished by the Ruifeng strip and Wuhan specifications eye coil, as to why some people use a strip coil, it depends on their factory mill can tie what width, this demand is also different.

Q: How are steel strips used in the oil and gas industry?: Steel strips are commonly used in the oil and gas industry for a variety of applications. They are used as reinforcements in pipelines, providing structural support and ensuring the integrity of the pipeline system. Steel strips are also utilized in the manufacturing of storage tanks and other equipment used in the extraction, transportation, and processing of oil and gas. Additionally, they are employed in the fabrication of various components such as valves, flanges, and fittings, which are essential for the efficient operation of oil and gas infrastructure.

Q: What are the common tensile strengths for steel strips?: The common tensile strengths for steel strips can vary depending on the specific grade and type of steel being used. However, generally speaking, the tensile strengths for steel strips typically range from 300 to 2,500 megapascals (MPa). For instance, low carbon steel strips typically have tensile strengths in the range of 300 to 600 MPa, while high carbon steel strips can have tensile strengths ranging from 1,200 to 2,500 MPa. Furthermore, stainless steel strips, which are known for their corrosion resistance and strength, generally have tensile strengths ranging from 600 to 1,500 MPa, depending on the specific grade and composition. It is important to note that these ranges are approximate and can vary based on factors such as the manufacturing process, heat treatment, and alloy composition. Therefore, it is always recommended to consult the manufacturer's specifications or standards for accurate tensile strength values for specific steel strips.

Q: How are steel strips tempered for improved toughness?: To enhance toughness, steel strips undergo a heat treatment process known as tempering. This involves heating the strips to a specific temperature, typically ranging from 300 to 700 degrees Celsius, and then rapidly cooling them. Depending on the desired level of toughness, the cooling is achieved by quenching the steel in oil, water, or air. During the heating stage, the steel strips undergo a transformation called austenitization, which alters their crystal structure. This results in the formation of martensite, a hard and brittle phase. However, martensite lacks toughness and is prone to cracking under stress. To enhance toughness, the steel strips are then subjected to tempering. This involves reheating them to a lower temperature, typically between 150 and 300 degrees Celsius, and holding them at that temperature for a specific duration. This allows the martensite to transform into tempered martensite, which is more ductile. Tempering helps relieve internal stresses, reduce brittleness, and improve toughness and ductility in the steel strips. It also enables the adjustment of the final mechanical properties according to the specific requirements of the application. In summary, steel strips are tempered to improve toughness by undergoing a carefully controlled heat treatment process. This transforms the hard and brittle martensite phase into a more ductile tempered martensite phase, ensuring that the strips possess the desired combination of hardness and toughness for different industrial applications.

Q: What are the international standards for steel strips?: The international standards for steel strips are set by various organizations such as the International Organization for Standardization (ISO) and the American Society for Testing and Materials (ASTM). These standards define the requirements and specifications for the manufacturing, testing, and usage of steel strips globally. ISO standards for steel strips cover aspects such as dimensions, tolerances, surface quality, mechanical properties, and chemical composition. ISO 9444-2 specifies the tolerances for hot-rolled stainless steel strips, while ISO 16162 outlines the requirements for continuously hot-dip coated steel flat products. ASTM standards provide guidance for steel strips used in various industries. For example, ASTM A109/A109M covers the requirements for cold-rolled carbon steel strip, while ASTM A568/A568M specifies the general requirements for steel, carbon, and high-strength, low-alloy hot-rolled and cold-rolled strip. Other organizations, like the European Committee for Standardization (CEN) and the Japan Industrial Standards (JIS), also establish their own standards for steel strips that are widely recognized and used in their respective regions. Complying with these international standards ensures that steel strips meet the necessary quality and performance requirements, facilitating their use in a wide range of applications such as automotive parts, construction materials, and electrical appliances.

Q: What are the different corrosion prevention techniques for steel strips?: There are several corrosion prevention techniques for steel strips, including the use of protective coatings, such as paints or zinc coatings, which act as a barrier between the steel and the corrosive environment. Another technique is the application of corrosion inhibitors, which are chemicals that can be applied to the steel surface to inhibit the corrosion process. Additionally, proper storage and handling practices, such as keeping the steel strips in a dry environment and minimizing exposure to moisture or corrosive substances, can also help prevent corrosion.

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