... , 900, 1500, 2500 Size: 1/2" - 24" Type: WN, SO, SW, TH, BL We Zhejiang Chaowei New Material Co.,Ltd are ... : - Welding Neck (WN), Slip-on (SO), Blind (BL), Socket Weld (SW), Lap Joint, Threaded (TH), Orifice, Plate (PL), LongWelding Neck (LWN ...