... , Welding Neck, Blind, Threades, Lap-joint, Socket welding,flange Steel Flanges Fittings The main flange products of our company include: Welding-neck ... , BS, JIS, UNI, NS and AS, GB, HB, JB, etc. Steel Flanges Fittings1)Standard: ANSI, JIS, DIN, UNI, BS2)Specification:DN10 ...