... ,201,202,405,410,420,430,904L,Duplex,etcTypePlate Flange, Flat Flange, Slip on Flange, Welding Neck Flange, Long Welding Neck Flange, Blind ... Flange, Socket Welding Flange, Thread Flange, Screwed Flange, Lap ... .Photoes:4.Package:5.Certificates:6.Cooperation: stainless steel socket welding flange