... -on, welding neck, threaded, socket weld, lap-joint Flange(LJ), Socket-welded, Blind Flange, Reducing Flange flange1. Type: Plate, slip-on, welding neck ... , threaded, socket weld, lap-joint Flange(LJ), Socket-welded, Blind Flange, Reducing Flang, Special Flange 2. Surface treatment: Transpaent/yellow/Black anti ... . Packing: Wooden case or as per customers'requirement slip on flange