Compound glass tube has an inner glass tube, of a boron silicate glass, and an outer glass tube in two or three half-shells, with an intermediate transparent polymer bonding layer between them

摘要

The compound glass tube has an inner glass tube (1) preferably of DURAN (boron silicate glass), and an outer glass tube composed of two or three half-shells (2). The inner and outer tubes are bonded together by a transparent intermediate polymer layer (3).