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Ultimate Guide to JIS B2220 Carbon Steel Flanges: Specs & Uses

Jan. 28, 2026

The importance of choosing the right flange cannot be overstated, especially when it comes to ensuring the integrity and efficiency of piping systems. One of the most popular options in the industry is the JIS B2220 carbon steel flange, renowned for its reliability and performance in various applications.

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Specifications of JIS B2220 Carbon Steel Flanges

JIS B2220 carbon steel flanges are manufactured according to Japanese Industrial Standards (JIS), ensuring consistent quality and performance. Typically, these flanges are made from carbon steel, which offers excellent strength and corrosion resistance when properly treated. The specifications of these flanges include a range of pressure ratings (from PN2.5 up to PN25) and different classes of sizes, which cater to various industrial needs. Common flange types include slip-on, blind, weld neck, and threaded, each serving unique purposes in pipeline construction.

Dimensions of JIS B2220 flanges can vary, but they are typically available in standard diameters ranging from 10A to 2000A, with corresponding thicknesses that depend on the pressure class required. The use of high-quality carbon steel in these flanges ensures durability even under high-pressure conditions. Additionally, surface treatments such as galvanization or painting may be applied to enhance the corrosion resistance of these flanges, extending their lifespan in challenging environments.

Common Applications of JIS B2220 Carbon Steel Flanges

JIS B2220 carbon steel flanges find extensive use across various industries, demonstrating their versatility and adaptability. They are widely used in oil and gas, chemical processing, power plants, and water treatment facilities. The reliability of these flanges in high-pressure and high-temperature environments has made them a preferred choice among engineers and contractors alike.

In oil and gas applications, JIS B2220 carbon steel flanges are often utilized in the construction of pipelines and various equipment setups. Their ability to effectively seal connections mitigates the risk of leaks, which is crucial in ensuring safe operations. In chemical processing, these flanges are essential for connecting pipes and vessels, allowing for the safe handling of hazardous materials.

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Similarly, in power generation, where pressure and temperature are critical factors, JIS B2220 flanges provide the necessary strength and corrosion resistance. They play a vital role in the effective functioning of steam lines and condensate systems. Likewise, in water treatment facilities, these flanges help ensure that the piping systems remain intact and efficient, contributing to the overall quality of treated water.

Considerations for Selecting JIS B2220 Carbon Steel Flanges

When selecting JIS B2220 carbon steel flanges, several factors should be considered. First, understanding the specific requirements of the application, including pressure ratings and temperature ranges, is essential. Users must also consider the compatibility of the flange with other materials in the piping system to avoid galvanic corrosion.

Furthermore, it is crucial to source JIS B2220 flanges from reputable manufacturers who adhere to quality standards. This guarantees that the flanges will meet the required specifications and safety standards, ensuring reliability in the long term.

Overall, the JIS B2220 carbon steel flange is a critical component in industrial applications, known for its durability, versatility, and performance. For those seeking further information or assistance in choosing the right flanges for your project, please contact us. Our team is here to help you find the best solutions to meet your needs.

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