ASME B16.5 Square Flanges is constantly utilized in high-pressure structures, for example, water overwhelmed or steam Pipe for off to 3,000 PSI working weight and made by JIS B2291 standard is an accessory piece that joins JIS clear drag size pipes together and have a functioning stack of up to 210kgf/cm2. This is unclear from 210 Bar, or 21MPa in Stainless Steel Square Flanges. https://www.shasanpiping.com/square-flanges-manufacturers-exporters-suppliers-stockists.html