... : ISO9001:2008 Size: 1/2"-48" Product: SO Flange, WN Flange, Blind, RF Flange,etc Pipe Carbon Steel A105 FlangeCertificate: ISO9001:2008Size: 1 ... /2"-48"Product: SO Flange, WN Flange, Blind, RF Flange,etcPiplded neck flange, slip on neck flange and blind flange2) Standard: ASME, AISI, JIS, DIN ...