Tempered borosilicate glass performance:
1、 Product execution standards: HG/T2144-91、 Ministry of Chemical Industry HGJ501-86
2、 Chemical composition: SiO2 AL2O3 B2O3 Na2O+K2O
80.00 2.8 12.8 3.8
3、 Chemical stability:
Water resistance:< 0.5mg/cm2
Acid resistance:< 0.5mg/cm2
Alkali resistance:< 80mg/cm2
4、 Thermal stability: △ T150 ℃, heat-resistant temperature ＜ 260 ℃
Bending strength: not less than 1100kgf/cm2
Hydraulic strength: at room temperature and -10 ℃, 16kg/cm2
Transmittance: not less than 90% every 2mm

Properties of high borosilicate glass:
1、 Mechanical properties:
Hardness: Grade 7
Elastic modulus: 67KNmm-2
Tensile strength: 40-120Nmm-2
2、 Chemical properties:
Water resistance level 1 (GB6582-86 Test method and grading for water resistance of glass particles at 98 ℃)
(GB12416.2-90 Test Method and Grading for Water Resistance of Glass Particles at 121 ℃)
Acid resistance level 1 (GB 6581-86 Weight test method and grading for boiling and hydrochloric acid corrosion resistance of glass)
Alkali resistance level 2 (GB 6580-86 Test method and grading for resistance to boiling mixed alkali aqueous solution erosion of glass)
3、 Optical performance:
Transmittance (2mm) 92%

Glass sheet specifications:50 × 10 ± 1, 60 × 10 ± 1, 70 × 10 ± 1, 80 × 10 ± 1, 95 × 12-13, 95 × 15-16, 100 × 15-16, 100 × 18-20, 120 × 15-16, 120 × 18-20, 130 × 15-16, 130 × 18-20, 140 × 15-16, 140 × 18-20, 150 × 18-20, 160 × 18-20, 165 × 18-20, 180 × 18-20, 180 × 24-26, 200 × 18-20, and 200 × 18-20. 24-26, etc.

The size of the glass tube can be customized and processed according to specific customer requirements.