name:flange size:DN125(5.5") CONCRETE PUMP PIPE FLANGES FROM 2" TO 6" PM,SCHWING,SANY,ZOOMLION ... FORGED, NO CASTED 1. We are a professional manufacturer of concrete pump pipes and parts in china. Our products include steel pipes ... , ELBA, IHI, NIIGATA, etc, concrete boom pumps, trailer pumps or shotcrete machines.4. OEM available from us.ZHONGLING CONCRETE PUMP PIPE FLANGE SPECIFICATION:TYPE2 ...