... :aluminium alloy ISO9001,CCC Size:DN50,DN65, fire hose with couplingModel:KD KN KYMaterial:aluminium alloyISO9001,CCCSize:DN50,DN65, ... hose DiameterWorking PressureTesting PressureBursting PressureLength (mm)(MPa/BAR/PSI)(MPa/BAR/PSI)(MPa/BAR/PSI)(M/FEET) 251.0/10/150 ... 100115125140 1502002503002. Fire coupling Used for combining water band with water band ,fire hydrant ,water lance and fire-fighting ...