There are many kinds of water tanks, our company only supply water tank for heat pump hot water system.
Water tank can be pressed water tank or unpressed water tank, can be vertical water tank or horizontal water tank, can install coil pipe, install electric heater.
The inside tank material is #304 stainless steel and thickness is 1mm to 2mm, the insulation is Polyurethane (PU) and thickness is 50mm, outside tank can be stainless teel, or colored steel.