Key specifications/special features of u pipe solar collector:
1. Solar vacuum tube with U pipe
2. Manifold material: aluminum alloy, thickness is 1.5 mm
3. Size of vacuum tube: 47ױ500mm
4. Quantity of tube: 10, 15, 20, 25 and 30 pieces
5. Maximal pressure bearing: 1.0Mpa
6. Insulation ma...