... copper 3.Size 6*109mm Copper groove heat pipe 1.Copper heat pipe2.Material copper3.for LED Wick structures ... for heat pipes: groove Heat pipe shapes : straight , bended The forms for the heat pipes: straight, Round, ... shapes and forms for heat pipesSurface finishing of heat pipes: natural, passivate nickel platingThe modifications for heat pipes: Bending and Flattening ...