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Prime Steel stands as a premier manufacturer and supplier specializing in JIS B2220 flanges, setting itself apart with a commitment to excellence and precision in every product. Our flanges, designed in strict accordance with the Japanese Industrial Standards (JIS) B2220, exemplify reliability and durability in piping systems. At Prime Steel, we take pride in our meticulous craftsmanship, ensuring that each flange meets the stringent specifications of JIS standards.
Flange Type
Material Selection
Pressure Class (PN)
Facing Type
Size and Dimensions
Application Specifics
Japanese Industrial Standard (JIS B2220)
5K & 10K - DN 10 (NPS: 1/2") to DN 150 (NPS: 6"), 10K, 16K, & 20K - DN200 (NPS: 8") to DN600 (NPS: 24"), 20K & 30K - DN700 (NPS: 28")and above
5K, 10K, 16K, 20K, 30K
Flat Face (FF), Raised Face (RF)
Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Carbon Steel with Anti-Rust Coating
Oil and Gas Industry, Chemical Processing, Water Treatment, Power Generation, Mining Industry
JIS B2220 Flanges are classified into different pressure classes, denoted by a "K" value. The pressure class indicates the flange's ability to withstand specific levels of pressure. The common pressure classes for JIS B2220 flanges include:
JIS B2220 refers to a Japanese Industrial Standard (JIS) that specifies the dimensions, materials, facing types, and pressure-temperature ratings for steel pipe flanges. Flanges manufactured in accordance with JIS B2220 standards are commonly used in piping systems across various industries. These flanges facilitate the connection of pipes, valves, and other components, providing a means to create secure and leak-free joints.
The standardization provided by JIS B2220 ensures that flanges produced by different manufacturers are compatible and interchangeable, promoting uniformity and reliability in piping systems. When working with JIS B2220 flanges, it's important to refer to the specific standard and consider factors such as pressure, temperature, and material compatibility for the intended application.
Flange Types: JIS B2220 standardizes various types of flanges, each serving specific purposes. Common types include welding neck, slip-on, blind, socket welding, and threaded flanges.
Pressure Classes (K): JIS B2220 classifies flanges into different pressure classes, denoted by a "K" value. Pressure classes include 5K, 10K, 16K, 20K, and 30K. The pressure class indicates the flange's ability to withstand specific levels of pressure.
Facing Types: The standard specifies facing types, such as Raised Face (RF) and Flat Face (FF). The facing type influences the sealing surface and the type of gasket used.
Materials: JIS B2220 provides details on the materials used for manufacturing flanges. Common materials include carbon steel, stainless steel, alloy steel, and others. The choice of material depends on factors such as the transported fluid, temperature, and corrosion resistance requirements.
Dimensions: The standard defines the dimensions of flanges, including outer diameter, bolt hole diameter, flange thickness, and overall height. These dimensions ensure compatibility and proper fit with pipes and other components.
Marking: JIS B2220 specifies the marking requirements for flanges. Information such as the manufacturer's name or trademark, pressure class, and material designation may be marked on the flange.
Testing: The standard may outline testing procedures and requirements to ensure the quality and performance of the flanges. This may include hydrostatic testing and non-destructive testing methods.
JIS B2220 Welding Neck Flange
JIS B2220 Slip On Flange
JIS B2220 Blind Flange
JIS B2220 Socket Welding Flange
JIS B2220 Threaded Flange
Check JIS B2220 Flange Standard Dimensions Download
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