Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible Pump for Corrosive Liquids
For example: ZJ350QJ(HR)300-246/6-350KW  350 indicates that the applicable well diameter is not less than 350 millimeters. Q stands for submersible (initial letters of Chinese Pinyin); J stands for well use (initial letters of Chinese Pinyin); 300 indicates a flow rate of 300m3/h; 246 indicates a head of 246 meters; /6 indicates 6-stage impeller series. H: stands for stainless steel seawater pump; R: stands for hot water submersible pump.
Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible PumpScope of Application
Suitable for farmland irrigation, garden watering, fountain landscapes, rainwater recycling systems, mine drainage, emergency rescue, urban water supply, and extracting underground water sources for enterprises and institutions. The equipment features low noise, high efficiency, and energy savings.
Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible PumpTechnical Parameters:
Outlet flange diameter 200mm. Number of fixing bolts: 12, model 16×60 (grade 8.8), bolt center distance 256mm. For user convenience in installation, a matching flange (outer diameter 282mm, inner diameter 220mm, thickness 20mm) is provided with the unit for on-site welding of the pump short pipe.
Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible PumpPermissible Media Range
1: Clear water without impurities, chilled water/cooling water, rainwater, underground water from coal mines, iron mines, metal mines, drinking water, mineral water, etc.
2: Permissible working water temperature range +5 to +25℃
3: Solid impurity content (by mass) not greater than 0.01%
4: pH value (acidity/alkalinity) 6.5-8.5 If the liquid is corrosive, stainless steel, tin bronze, or other corrosion-resistant materials must be used.
5: Hydrogen sulfide content not greater than 1.5mg/L
6: Chloride ion content not greater than 400mg/L
7: The unit must operate completely submerged in water.
Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible PumpMotor Parameters
The submersible motor is lubricated by clean water. Before use, the motor cavity must be filled with clean water (Note: It must be filled completely; otherwise, the motor's service life will be reduced). If water is forgotten, the motor will burn out quickly.
Motor protection class: IPX8
Motor insulation class: F-class insulation
Power supply: 380V/660V/1140V/3000V/6000V/10000V  50HZ /60HZ  If customers require special voltage or frequency, please notify us in advance.

If customers require special voltage or frequency, please inform us in advance.
Materials
Impeller: Cast iron HT200, or tin bronze (various grades) such as: ZCuSn3Zn8Pb6Ni1
Pump casing: Cast iron HT200, or stainless steel such as: 2Cr13, 304, 316, 316L, 2205.
Pump shaft: Cold-drawn steel chrome-plated, or stainless steel 2Cr13 (tempered at 1050℃ for enhanced torque)
Motor seal: Rubber seal O-ring; mechanical seal.
Motor expansion adjustment bag made of rubber.
Tianjin Zhijiang Pump IndustryZJ350QHStainless Steel Submersible PumpEquipment Advantages
--Careful factory assembly ensures quick and reliable on-site installation
--Multi-stage impeller design for extremely low noise
--Built-in check valve to prevent water hammer impact.
--High single-stage head reduces overall unit height and increases operational stability. Pump shaft diameter φ50mm enhances torsional resistance. Bushings made of natural rubber material for increased wear resistance, with hard bushings made of imported materials.
Supply Scope
Submersible pump unit (including pump body and submersible motor), built-in one-way check valve, one matching outlet flange, 16×60 (grade 8.8) bolts (12 pieces), one operation and maintenance manual, one certificate of conformity, one packing list, and outer packaging.

The above models are for illustrative purposes only. Online prices do not represent actual selling prices. Please inquire by phone for specific pricing.