... 3.1 year warranty 4.ISO9001,CCC approvals stainless steel deep well submersible water pump 380V Operation parameters : 1. Flow range : ... 500 m3/h 2. Lift range : 10-600m 3. Applicable well Borehole diameter : φ175-φ400mmProduct overview : QJ submersible pumps are ... widely used in agriculture irrigation, sprinkler irrigation, well water lifting and water supply, drain system of industrial and ...