1)Type:weld neck, slip on, flat, lap joint, socket, blind, thread 2)Standard;ANSI,ASTM,DIN,JIS,UNI 3)Size: ... flange2) Type: welding-neck flange, slip on flange, screwed flange, blind flange,lap joint flange, socket-welding flange3) Standard: ASME, ANSI ...