... produces of 3.3 high borosilicate glass, with a good appearance, high temperature, resistance strong pressure, acid and alkali, high transparency, good quality, ... glasses 1.7,2.0,3.0,3.3,4.0,5.0,6.0,8.0,10.0 ... .0 mm thickness, etc., the maximum size of 2000mm × 750mm , the minimum size of 20mm diameter Resistance to bending strengthnot ... ): 3.3 ×10-7 K-1Softening temperature:820°C high borosilicate Glass