... -60mm ,can stand stonger pressure 3.outer tank:stainless steel 201 4.CE Pressurized Solar Water Storage Tank for solar system 1)EXW ... , drain outlet Features description:1. widely used for hot water storage in residential buildings, hotels, office buildings, schools, restaurants and ... ,thickness 50-60mm.3.Flanging roll inner tank,can be bear more stronger pressure.4.Screw thread connector is inside,can ...