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U-Shaped Glass: Technical Specifications and Applications

2025-08-07

1. Definition & Production Process

U-shaped glass, also known as channel glass, is a building glass material manufactured from recycled glass and quartz sand. Key production stages include:

Melting at 1470°C
Forming via continuous rolling process
Annealing treatment
Optional enhancements:
Embedded wire mesh for reinforcement
Textured surfaces using patterned rollers

2. Classification Systems

Category	Types/Parameters
Surface Finish	Standard fine pattern, Wave pattern, Fine stripe, Thick stipple, Transparent
Mechanical Strength	Standard (≥70MPa flexural strength), Tempered (≥150MPa), Film-reinforced
Color Treatment	Clear, Color-glazed, Filmed, Sandblasted/Frosted

3. Key Technical Properties

Property	Performance Data
Optical	85% light transmission (single layer); <50% transmission (double U-section with air gap); Reduces light pollution via diffuse reflection
Thermal	U-value down to 1.84 W/(m²·K); 30% improved insulation when filled with thermal materials
Mechanical	Withstands structural deformation stresses; Vertical span up to 6 meters

4. Architectural Applications

Facades:
- Double-skin curtain wall at Shenzhen Bay Super Headquarters Base
- Curved facade at Shanghai Expo Chile Pavilion
Interiors:
- Light-transmitting partitions at Wanho Haomei Art Hotel
- Landscape screens at Ningbo Jiuzhuli Project
Special Structures:
- Airport terminal skylights (designed to DIN-1249)
- Illuminated art walls at Shanghai Glass Museum

5. Installation Requirements

Joint Design:
- Elastic gaskets + flexible sealants
- ±15mm joint width for thermal expansion
Geometric Limits:
- Max. height: 6m
- Min. curvature radius: 500mm
- Vertical tolerance: ≤5mm (≤5m height), ≤7mm (5-7m height)
Structural Compliance:
- Transfers loads to main structure via aluminum frames
- Non-load-bearing use only
- 10-20mm air layer mandatory in double-layer installations

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