Split Pressurized Heat Pipe Solar Collector CE,SOLAR KEYMARK, ISO9001,SGS High quality competitive price Best Regards Split Pressurized Heat Pipe Solar CollectorSpecifications Details:1 ... ): 58*1800mm3. Tube Quantity: 10,12,15,18,20,25,30 pieces.4. Manifold: Aluminum alloy.5. Flow pipe: Copper.6 ... be glad to give you answers. Split Pressurized Heat Pipe Solar Collector