1. type:welding neck Flange, blind Flange, socket welding Flange, slip on Flange, lap joint Flange and thread Flange 2. material: carbon steel, stainless steel and alloy steel Flanges3. standard: ANSI, JIS, BS, DIN, EN, GB, UNT, AS, AWWA, MSS, API, LWN, ORIFICE, 8-FIGURE, RINGS AND GEARS4. size:...