German standard flangeDIN2630~2637 (WN) with neck butt welding flangeDIN2574~2579 (PL) flat welding flangeDIN with neck flat welding flangeDIN2525~2560 (BL) flange coverDIN 2566 (Th) threaded flangeDIN2641~2642 (PJ/SE) butt welding ring loose flange
German standard flangeDIN2630~2637 (WN) with neck butt welding flangeDIN2574~2579 (PL) flat welding flangeDIN with neck flat welding flangeDIN2525~2560 (BL) flange coverDIN 2566 (Th) threaded flangeDIN2641~2642 (PJ/SE) butt welding ring loose flange
