carbon steel high-neck Flange 1, ASTM A 234 WPB 2 , 90% PRODUCTS ARE EXPORTED ... -on, threaded, lap-joint, socket welding and blindManufacturing standards: API, ANSI, BS, JIS, UNI, MSS, SPSize range: from 1/2 to ... 56’’ (DN 15 to 1,400)Pressure: ANSI class 150 to 2,500Materials: A105, A182 F5,F11,F12 ... WPB,WPC,WP5,WP11,WP22,WP91 carbon steel high-neck Flange