Premium Square Quartz Glass Tubes: Engineering Excellence Meets Unmatched Performance

John Moncrieff’s Premium Square Quartz Glass Tubes combine precision engineering with outstanding material properties. Designed for demanding industrial, scientific, and architectural applications, these tubes deliver unmatched performance in thermal, chemical, and optical environments.

Dimensional Specifications

• Diameter Range: 1 mm – 800 mm for maximum versatility
• Length Capacity: Extended tube lengths available — 3,000 to 5,000 mm
• Wall Thickness: Precision-engineered from 0.5 mm to 10 mm

Superior Temperature Performance

• Hardening Point: Exceptional heat resistance up to 1730 °C
• Sustained Operation: Reliable continuous performance at 1000 °C
• Peak Performance: Tolerates short-term exposure up to 1450 °C
• Thermal Shock Resistance: Maintains integrity when rapidly cooled from 1100 °C

Industry-Leading Chemical Resistance

• Corrosion Protection: Inert to virtually all acids and alkalis (except hydrofluoric acid)
• Durability Comparison:
  • 30× more acid-resistant than ceramic
  • 150× more resistant than stainless steel
  • Superior performance even at low temperatures

Thermal Properties

• Ultra-Low Thermal Expansion: Coefficient (5.3 – 5.8) × 10⁻⁷
• Outstanding Thermal Stability: Excellent resistance to rapid temperature change
• Temperature Gradient Tolerance: Maintains structure under extreme fluctuations

Electrical Characteristics

• Superior Insulation: 10,000× higher resistance than standard glass
• High-Temperature Reliability: Retains electrical integrity under heat stress
• High-Voltage Suitability: Ideal for specialist and industrial electrical applications

Optical Excellence

• Broad Spectrum Transmission: Superior clarity from UV to infrared wavelengths
• Visible Light Transmission: > 93 % transparency for maximum brightness
• UV Transmission: 80 – 90 % transmittance for UV applications
• Spectral Range: Full transparency across violet to red light spectrum

John Moncrieff Ltd continues its legacy of engineering excellence by providing premium square quartz glass tubing built for performance, precision, and durability.

Contact our Technical Team to discuss your custom quartz tube requirements.