... ect. from 1/2" to 48" Welding Neck Flange, Slip on FlangeDetailed Product DescriptionStandard for design and ... flange(PL flange),Slip-on flanges(SO flange),Welded neck flanges(WN flange),Blind flanges(BL flange),Threaded flange(TH flange), Socket welding flange(SW flange) ,PJ flange,Lap joint flange ... API) ,DIN ,BS,AS2129, JIS,EN 1092,customized design. ANSI A182 150lb 28" WNRF Forged Flange