... :Carbon/Stainless 4. Size:1/2"-72" Forged Galvanised Flange 1)material: Carbon steel (A105, RST37-2/S235JRG2, ... 304L, 316, 316L...) 2) Standard: DIN, ANSI, JIS, AS2129, API, BS4504, GOST 3)TYPE: SLIP ON, WELDING NECK, PLATE, BLIND ... ~72' 'TypeLap-Joint Flange (LJ), Socket-welded Flange (SW), Slip-on Flange (SO), Welding-Neck Flange (WN), Threaded Flange (TH), Blind flange etc.American SeriesCLASS 150 ...