1)no water in evacuated collector tubes 2)evacuated collector tube with heat pipe 3)certificate:solar keymark,CE,SGS,SRCC

Specifications:

aluminum fin for Solar  collector  with copper heat pipe

a)       dimension of vacuum tube: ø58*1800mm;ø70*1900mm

b)      quantity of tubes:15,18,20,24,30 tubes

c)      aluminum fin ,thicknness: 0.25mm    ;   length:1680mm

d)       hail resistance: diameter 25mm

e)      manifold: red copper heat pipe

f)       the material of manifold casing: aluminum alloy

g)       insulation of manifold: rock wool

h)      max.pressure:9 bar

i)      working pressure:6 bar

j)        coating of vacuum tubes :selective sputtering coating:

SS-C/CU&AL/N (three target) and AL-N/AL (signle target) ,which depends on customer`s requirement.

k )Certificates:ISO9001-2008,CE,Keymark ,SRCC , CCC , SGS and so on.

3 years international responsibility for free repairing or exchange due to original quality problems

aluminum fin for solar collector with heat pipe