... steel flange,stainless steel flange,alloy steel flange* ASME/ANSI B16.5 : WELDING NECK FLANGE, SLIP-ON FLANGE, BLIND FLANGE,HIGH HUB BLIND FLANGE,,SOCKET WELD FLANGE.LAPJOINT FLANGE, THREADED FLANGE ... , PN25, PN40 threaded flange DIN2565,2566,2567,2567 loose flange DIN 2641,2642,2656,2673Material: carbon steel ST37.2, stainless steel 1.4301 ...