... :flange size:DN125(5.5") CONCRETE PUMP PIPE FLANGES FROM 2" TO 6" PM,SCHWING,SANY,ZOOMLION METRIC,HEVI-DUTY,GROOVED ... hoses, elbows, bends, reducers, couplings, cleaning balls and so on.2. As a supplier of SCHWING,SANY,ZOOMLION, we alway try ... CONCRETE PUMP PIPE FLANGE SPECIFICATION:TYPE2"3"4"5"6"2"HD2.5"HD3"HD4"HD5"HD6"HDSch 5" male/femaleSch ...