type,forged flange standard, ASTM. BS, JIS, DIN, GB Size, 1/2"-48" Detailed Product Description Pipe Flange/carbon steel flange/ pipe steel flange Standard; ASTM ... ,B16.36, MSS SP44 Types, Welding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, Blind Flange, Orifice Flange, Ring Joint Flanges, Long Welding Neck ...