... heat preservation water tank, solar power workstation and the pipe. 1, Stainless steel /Aluminum Manifold2, 0.5/ ... 0.6/0.7MM heat pipe with anti-freezing function3, AL/SS-N-AL/ ... .5/0.6/0.7MM heat pipe with anti-freezing function heat pipe for rapid heat transfer.3, Max ... Stainless steel 304 2B, thickness 0.8mmHeader pipe material and thicknessDiameter:32mm, thickness 1.0mm copper pipeHeat ...