Solar water heater

glass tube:58x1800mm
inner tank material:SS3042B food grade
out tank material:galuanized aluminum with powder painting;
frame material:galuanized steel sheet mould forming with powder painting;
insulation:50mm polyurethane total forming;
note:
1.with heater exchanger 12mm,max.pressurized 8bar;
2.state water supply direct enter into the inlet water hole,go through the heat exchanger hot water come out from the outlet water hole;
3.the air vent hole can connected with central heat supply pipe to heat the tank water