SPA ----不锈钢SUS 304 2B用于歧管 SPB ----用于歧管的铝合金
SPA----stainless steel SUS 304 2B for the manifold
SPB----Aluminum alloy for the manifold
1. Borosilicate glass according to ISO3585:1991; transmittance of borosilicate glass:0.92.Absorbance of solar selective absorptive coating:0.94; Hemispherical emittance:0.08; Getter according to GB/T9505-1998.
2. Start-up temperature: no more than 25.
3. Start-up time: no longer than 2 minutes under normal sunshine.
4. Low temperature resistance: no breaks at -30.
5. Heat impact resistance: no damage after over 3 time's alternative impact of cold water below 25 and hot water over 90.
6. Pressure resistance: can withstand 0.6Mpa.
7. Hail resistance: no damage by the impact of 25mm diameter hail.