JISB2220-2012istheJapaneseIndustrialStandardforsteelpipeflanges.Thisstandardspecifiesthedimensions,materials,manufacturingmethods,inspection,andmarkingrequirementsforsteelpipeflangesusedinpressurepipingsystems.Itcoversflangeswithnominalsizesrangingfrom10Ato1500A(10mmto1500mm)andpressureratingsfrom5Kto63K.Thestandardappliestoflangesusedinvariousindustrialapplications,includingpetrochemicalplants,powergenerationfacilities,andgeneralindustrialpipingsystems.JISB2220-2012ensurescompatibilityandinterchangeabilityofflangesmanufacturedaccordingtothisstandard,facilitatingpropersealingandconnectioninpipingsystems.Thestandardincludesdetailedtechnicalspecificationsfordifferentflangetypessuchasweldneck,slip-on,blind,andlapjointflanges.
