... size:5.5" weight:4.9kgs concrete pump bolt coupling 5.5"NameConcrete pump pipe couplingSize2”-8”,other ... sizes upon requestTypeSnap,adjustable,bolt,two bolt,four bolt,fixable coupling etc.(upon request)MaterialCarbon steelTechnicPrecision castingApplicationContection of ... pipeBrandsSANY,SCHWING,PUTZMEISTER,KYOKUTO,CIFA,ZOOMLION,etc. concrete pump bolt coupling 5.5"