Flat Plate Solar Collectors Separate pressurized tank CE,CCC,ISO9001,ISO14001 certificate Split Flat Plate Solar Hot Water Heating SystemFeather:1. Special Anodized aluminum ... thread sizeMaximum torqueConnection pip sizeSupersonic melting solderCopper Silver solderType C-copper tube, to AS 1432-1973Φ 25mm OD, 0. ... 71 mm wall thicknessType C-copper tube, to AS 1432-1973Φ 12 mm OD, 0 ...