Beijing Kaixingda Industrial Technology Development Co., Ltd.
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Specifications Transparent glass tube 3.3
size: from 3-315mm, and the tubes of 37, 47, 58, 70 for the solar water heater.
Borosilicate transparent glass tube 3.3 :
size: 3-320mm the high borosilicate glass tube 3.3 enjoys good heat-proof, anti-rot, mechanical capacity, high working temperature, good technical quality and the favourable price.
Main composition:
1) SiO2: 80±0.5%
2) B2O3: 13±0.2%
3) Al2O3: 2.4±0.2%
4) Na2O(+K2O): 4.3±0.2%