stainless steel flange,duplex,weld neck flange.. 1.ss 201,301,304,316,etc. 2.all sorts of design 3.ISO,SGS stainless steel flange,duplex,weld neck ... flange.. Type:Slip On Flange, Welding Neck Flange, Socket Welding Flange, Threaded Flange, Lap Joint Flange, Blind Flange and other kinds ...