... , 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 ... : widely used in oil, chemical industry, electric power, shipping industry and other pipe projects Carbon Steel A105 Flange 1 ...