1.The vacuum tube glass material to use high borosilicate and have 12 clad layers. (absorptivity0.92 emissivity0.06resistance 25mm haily) (type:47mm*1500mm,58mm*1800mm15,18,20,24,30,36tubes capacity:86-300L)
2.Outer tank shell are pearly-lustre board.(460mm0.4mm thickness)
3.I...
Products: solar heater tube,
water tube boiler