... plies 4.steel wire,tire cord or fabric concrete pump rubber hoses1.Integrated hose end and inner wall harden, prolong work life ... .2.Hose end can be galvanized. Relevant Information:NameConcrete rubber hose; Delivery hose; End hose; Concrete pump hose; Boom hoseSize2/2.5/ ... hardenApplicationSchwing, Putzmeister, Kyokuto, Cifa, Sany, Zoomlion,JunJin etc 4M Concrete Pump Rubber Hose