Technical standards and performance characteristics of JIS B2220 flanges
This international standard sets rigorous requirements for the geometric parameters and physical-mechanical characteristics of steel flanges, including Slip On Flanges and Welding Neck Flanges. The documentation covers a wide range of nominal diameters from 10A to 1500A, ensuring compatibility with main and process pipeline systems of various pressure classes: 5K, 10K, 16K, 20K, 30K, 40K, and 63K.
The EV Group China engineering department emphasizes that product selection must be based on precise compliance of nominal pressure and operating conditions (temperature regimes, aggressiveness of the medium) with the requirements of JIS B2220. Each batch of metal products supplied by EV Group China undergoes mandatory inspection for compliance with tolerances for the flatness of sealing surfaces and the quality of welded joints of welding neck flanges.