... TP2 1060mm*22mm/25mm*0.6mm (L*OD*Wall thickness) 2 pcs Riser tube: full copper ... TP2 1886mm*10mm*0.45mm (L*OD*Wall thickness) 7/8 pcs Fin: Aluminium 0.3mm ... 8, pressure standing 9, no blasting 10, leakproofApplicationThe water heating systems for commercial, buildings, hotels, hospitals, ... ,Southeast Asia, Mid East ,Western Europe. CE, Solar Keymark split flat plate solar water heater collector