The toughened borosilicate sight glass is made of borosilicate glass, which is generally used in the observation ports of various high temperature containers and high pressure vessels. Is the use of high-quality borosilicate sight glass after cutting, grinding, tempering is processed, with high heat resistance, good compressive strength, good transparency, good chemical stability, high mechanical strength, is the first processing industrial sight glass, sight glass, sight glass, boiler piping flange sight glass.

Properties of toughened borosilicate sight glass:

1. Chemical properties:

Water resistance: the temperature resistance at 98 degrees is 1, and the water resistance of 121 degrees is grade 1.

Acid resistance: Na2O precipitation per square decimeter in sight glass is less than or equal to 100 g;

Alkali resistance: A2 grade

2. Physical properties:

The coefficient of thermal expansion of the average line: alpha (20 degrees ~300 degrees) = (32.5 + 0.5) x 10-7/;

Density: P =2.23 + 0.02 g/cm3;

Average thermal conductivity (20 degrees ~100 degrees): 1.2WM-1K-1

Working temperature: long-term temperature resistance 450 degrees, instant temperature resistance 500 degrees.

3. Optical properties:

Transmittance: the transmittance of visible light is greater than 92%;

Ultraviolet transmittance: the ultraviolet transmittance of 360-400nm is 90-92%, and the ultraviolet light is less than 360nm.

Infrared transmittance: 92%

Specification for toughened borosilicate sight glass

Circular sight glass: Phi 25mm~ Phi 700mm

Square sight glass: 20mm*20mm~750mm*1200mm

Product thickness: the float process is 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 20mm.

Pressing process: 8mm~50mm

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