... Flange (WN,SO,Blind) 2 Size:1"-48" 3 Standard:ASTM,GB,DIN,JIS 4 Material:A105, 1 Carbon steel pipe fitting ... 2 ISO9001 cerfitication supplied 3 High quality and reasonable price 4 Standard :ASME ,DIN,GB Manufacturer for butt welded pipe fitting ... ProductsPipe fitting 1 Flange (WN,SO,Blind,Lap Joint) 2 ... ,machine stainless steel blind flange/B16.5