... "5. Type:Slip-on flanges,Blind flanges, Spectacle flanges, Plate flanges,TG flanges, Lap joint flanges,Welding neck flanges,Socket ... party16. Used for : petroleum,chemical,power,gas,water,linepipe, heat exchanger,shipbuilding,construction,etc.17. Tolerance:not less than +_8% of ... first, Customer upmost .19. Our declaration :our company try to enlarge market field not only in domestic but also overseas ...