Introduction of three-phase stainless steel submersible electric pump The three-phase stainless steel submersible electric pump is made of 304 stainless steel or other stainless steel, duplex steel, copper, etc. Beautiful, small size, (outer diameter only 128mm), three-phase power supply, easy installation, mechanical seal for shaft seal, strong corrosion resistance (PH value 4-10), no noise, no …