... our company,we also offer custom made models. Hyperion solar heat pipe is certified by CE, ISO9001, CCC, RoHS. It ... use solar energy to heat water & save money for youProduct specification:1.Heat pipe material: Red copper2. Structure: All-glass ... . Copper tube: Diameter: Header: Φ14mm, copper pipe: Φ8mm Thickness: 0.6mm11. Lifetime:15years 11. Hail resistance:Φ25mm Super conduct heat pipe