... . detailed record cards of process 1. A105 Q235 Forged Carbon Steel Flange 2. Material:CS 3. Size:1/2"-48" 4. ... flanges, Blind flanges, Lap joint flanges, Welding neck flanges, Spectacle flanges,TG flanges,Socket welding flanges and Threaded flanges,Square flanges.6 ... FM ,RTJ,RJ ,MALE ,FEMALE and so on .8. Used for : petroleum,chemical,power,gas,water,linepipe, heat exchanger,shipbuilding,construction ...