Submergence Depth of HL Vertical Long Axis Oblique Flow turbine pumps

The required submergence depth of HL vertical long-axis oblique flow Flow turbine pumps: HLB, HLBK, HLKT, HLBS, HLKS, etc., vertical long-axis pump, long-axis oblique flow Flow turbine pumps, vertical oblique flow pump, long-axis pump, submergence depth of vertical long-axis Flow turbine pumps, for reference only, subject to physical object!