carbon steel high-neck Flange 1, ASTM A 234 WPB 2 , 90% PRODUCTS ARE EXPORTED OVERSEAS 1, ASTM A 234 WPB 2 , 90% ... PRODUCTS ARE EXPORTED OVERSEASType: welding neck, slip-on, threaded, lap- ... SPSize range: from 1/2 to 56ββ (DN 15 to 1,400)Pressure: ANSI class 150 to 2,500Materials: A105, A182 F5 ... A234 WPB,WPC,WP5,WP11,WP22,WP91 carbon steel high-neck Flange