... material:natural rubber,steel wire 3.layers: 4layer or 2 layer concrete pump rubber hoseWe can supply all model rubber hose ... or 4layer pressure: 85BARProduct details:Name Concrete Pump Rubber hose Size DN125(5"), DN100(4")Length 3000mm,4000mm ... ,5000mm,6000mmReinforment Three plies of Steel Wire Hose Ends148mm, 127mmWorking Pressure 85barBurst Pressure 250barApplication Capacity ...