name:flange size:DN125(5.5") CONCRETE PUMP PIPE FLANGES FROM 2" TO 6" PM,SCHWING,SANY,ZOOMLION METRIC,HEVI-DUTY,GROOVED,MALE/FEMALE FORGED, NO CASTED 1. We are a professional manufacturer of concrete pump pipes and parts in china. Our products include steel pipes, rubber hoses, elbows, bends, reducers, couplings, cleaning balls and so on.2. As a supplier of SCHWING,SANY,ZOOMLION, we alway try our ...