... ,HK40,steel 3.ISO9001:2008 Weld Neck Slip on Lap Joint Flange Varieties: threaded flange, slip-on flange (SO), socket welding ... flange, lap joint flange (LJF), welding neck flange (WNF), blind flange, orifice flange ... of smooth,can work under presure for long time,advanced testing equipment to ensure thye quality,7.Packing:wooden case,wooden pallet ...