... flat face; threaded Connection: Welding Varieties: Threaded Flange, Slip-On Flange (SO), Socket Welding Flange, Lap Joint Flange (LJF ... FlangeDin2573 Pn6 Slip-On, Din2576 Pn10 Slip-On, Din2543 Pn16 Slip-On, Din2544 Pn25 Slip-On, Din2545 Pn40 Slip-On, Din 2527 ... to seal pipe line, such as oil, petroleum, gas, chemical industry, nuclear power station, water and nuclear power construction, shipbuilding, ...