Technical data:MaterialBorosilicate Glass 3.3Outer Diameter58mmInner diameter47mmTube Thickness1.6±0.1CoatingAL-SS-CUTypeNon-pressureTUbe LIfeAt Least 15 YearsWarranty5 YearsApplicationSolar Water HeaterPackage5 layers corrugated paper/3 foams
/3 stripsAbosorption of Selective Coating≥0.92Emission of SeElectric Contact & Materials lective Coating≤0.06Vacuum&lHardware Accessories e;3x10-3paStagnation Temperature>200ºCWeighing & Measuring Apparatus Solar Radiance Exposure≤3.6MJ/m2Coefficient of Average Heat Loss<0Lab Utensil and Disposable .80W/(m2ºC)Selective Abosrber Hand Tools CoatingAL-SS-CUMaximum Strength0.6Mpa
Why Choose Us?Our Advantage:
FAQ:
1. What is your production capacity per year?
--Production capacity could reach 10 million pcs per year.
2. Do you produce the high borosilicate glass tubes all by yourself?
--Yes, we have 2 furnaces in our factory and over 20 coating lines. We could assure the stability of quality from the glass tubes to solar vacuum tubes.
3. How about the guarantee?
--Five years guarantee and 15 years' lifespan.
4. Is OEM available?
--Yes, we could help you design the logo and print logo on tubes and packages.