Borosilicate glass tube big diameter

Large Diameter Borosilicate Glass Tube — Industrial Grade

Our large diameter borosilicate glass tubes are precision-manufactured for demanding industrial applications including sight glass assemblies, level gauges, flow indicators, and process observation windows. Made from borosilicate 3.3 glass, they combine exceptional thermal shock resistance with outstanding chemical durability and optical clarity.

Key Properties

• Material: Borosilicate glass 3.3 (low thermal expansion coefficient: 3.3 × 10⁻⁶/K)
• High thermal shock resistance — withstands rapid temperature changes without cracking
• Excellent chemical resistance to acids, alkalis, and solvents
• High optical transparency — ideal for visual process monitoring
• Smooth inner surface — low friction, easy to clean
• Available in large OD sizes not commonly stocked elsewhere

Typical Dimensions (Large Diameter Range)

• Outer diameter: 50mm – 200mm (custom sizes available)
• Wall thickness: 3mm – 10mm depending on OD and pressure rating
• Standard lengths: 300mm, 500mm, 1000mm (custom cut available)

Typical Applications

• Industrial sight glass bodies and observation windows
• Large-bore level gauge tubes for tanks and vessels
• Chemical reactor observation ports
• Lamp envelopes and high-temperature enclosures
• Custom laboratory and process equipment

Why Borosilicate for Large Diameter Tubes?

Standard soda-lime glass cannot reliably handle the thermal and chemical stresses common in industrial process environments. Borosilicate glass 3.3 is the material of choice for critical applications where safety, visibility, and longevity are non-negotiable.

Please specify required OD, ID (or wall thickness), and length when enquiring. Custom sizes and pressure-rated configurations available on request.