Huachen Instrument Factory on-site firing of glass

The linear expansion coefficient of G3.3 high borosilicate glass is 3.3 ± 0.1 × 10-6/K, and it is a type of glass composed mainly of sodium oxide (Na2O), boron oxide (B2O3), and silicon dioxide (SIO2). The content of boron and silicon in this type of glass is relatively high, with boron content ranging from 12.5% to 13.5% and silicon content ranging from 78% to 80%. Therefore, this type of glass is called high borosilicate glass. PYREX glass belongs to borosilicate glass. Acid resistant, alkali resistant, water-resistant, corrosion-resistant, with good thermal stability, chemical stability, and electrical properties, it has characteristics such as chemical resistance, thermal shock resistance, good mechanical properties, and high temperature resistance.