Features:
1) Inner tank: sus304-2B stainless steel, advanced welding technique,
thickness 0.5mm
2) Out shell: zinc and aluminum coated steel sheet or color steel sheet
3) Corrosion resistant
4) Isolation layer: 50-65mm imported polyurethane foam for superior
heat preservation
5) Frame materials: galvanized steel, electrostatic powder coated
6) Type: 15, 18, 20, 24, 30 tubes
7) Capacity: 130-250 liter