Product Description

We could supply borosilicate glass tube , glass rod and glass sheet.We have large quantity in stock.Welcome to our factory. Sample is available for checking the quality. Size : OD: ****5mm **7, *7, *8, *0 for the solar water heater) Delivery time : *0 days Package: Three-layer carton box, five-layer or wooden box. Tube ends : rough , incision, polished or burning ends. Colore : Clean, bule, yellow, green, purple, pink, red, black, etc Main composition: 1) SiO2: *0�0.5% 2) B2O3: *3�0.2% 3) Al2O3: 2.4�0.2% 4) Na2O(+K2O): 4.3�0.2% Chemical properties: 1) Coefficient of mean linear thermal expansion (*0�C/**0�C): 3.3�0.1 (***6K*1) 2) Transformation temperature: **5�*5�C 3) Working point: 1, **0�*0�C 4) Softening point: **0�*0�C 5) Density at *0�C: 2.*3g/cm 6) Hydrolytic resistance at *8�C: ISO***-HGB1 7) Hydrolytic resistance at **1�C: ISO***-HGA1