Standard: ANSI B16.47 Class:150, 300, 600, 900 Size: 26" - 60" Type: WN, SO, SW, TH, BL We Zhejiang Chaowei New Material ... , Petrochemical, Energy, Nuclear, Automotive, Military, and so on..ANSI B16.47 FlangeClass:- 150, 300, 400, 600, 900Size:- 26" -60"Types: - ... Welding Neck (WN), Slip-on (SO), Blind (BL), Socket Weld (SW), Lap Joint, Threaded (TH), Orifice, Plate (PL), LongWelding Neck (LWN ...