... , Φ430, Φ445, Φ450, Φ460, Φ470, Φ480, Φ490,Φ500,Φ520(mm) color according to consumers' requirementmaterials galvanized sheet and stainless steelthickness 0 ... absolutely.3 The price is reasonable.4 You can customize color and size as you need.5 Safe and reliable.6 ... High strength of materials. 450-480mm Solar water heater outer tank Galvanized Cover