We use the outstanding material, processing by well-skilled techniqu, to guarantee the high quality. ISO9001:2000, CE, CCC

We use the outstanding material, processing by well-skilled technique, to guarantee the high quality.

ISO9001:2000, CE, CCC

Parameters:

Material                                       hign 3.3 borosilicate glass

Models                                        Φ47/58/70

Structure                                     Graded Cr-Al-N/AL/Cu coating double-layer tubes(most advanced coating in current world)

Outer tube diameter                    47±0.7mm/58±0.7mm

Inner tube diameter                     37±0.7mm/47±0.7mm

Tube thickness                             06±0.15mm/1.8±0.15mm

Absorptance                                 0.94~0.96

Emittance                                     0.04~0.06

Transmittance of outer tube         0.92

Stagnation temperature(height)   219~300

Presure-endure                             1.0Mpa

Stable advanced coating up to 420.

React swiftly and collects solar energy effectively.

The tube can bear the impact of the steel ball(diameter 30mm) fall in height 450mm.

High level vacuum ensure operation under Bad weather(–50°c_500°c)

Ideal heat collection efficiency in extreme cold water, with hot water available at a temperature of -30°c

Long time warranty to 15 yeas.

Solar collector tube/pipe