... ,SS400,SF440A,A105 2.Size:1/2"-40" 3.Type:weld neck 1. Type:plate,slip-on,welding neck,threaded,socket ... weld, lap-joint Flange(LJ),Socket-welded,Blind Flange,Reducing Flang, ... custom design as well. Looking forward to your enquiry ! flange,Weld Neck Flange with hub