Underground Fire Hydrant 1)Material:ductile iron 2)Size: DN65, DN80, DN100 3)Work pressure:PN10,PN16 Underground Fire Hydrant1)Material: ductile iron2)Size: DN65, DN80 ... : claw couplings.6)Height:Hydrant height can be adjusted as buyer's requirement.Surface Boxes For Underground Fire Hydrants1)Size:DN65,DN80,DN1002 ...