1. Product Overview
Expanded Metal Angle Bead (also known as Corner Bead) is a critical finishing accessory used in plastering and stucco work. It features a solid metal nose that acts as a straight-edge guide and expanded mesh wings that provide superior reinforcement. By embedding the mesh into the plaster, it creates a perfectly straight, crisp corner that is highly resistant to chipping, cracking, and impact damage.
2. Manufacturing & Craftsmanship
The production of Angle Bead combines precision forming with expanded metal technology:
Simultaneous Punching & Stretching: The edges of a galvanized steel or stainless steel strip are slit and stretched to form a diamond mesh pattern, while the center remains solid.
Precision Roll-Forming: The strip is then passed through a series of rollers to form the central "nose" or "bead." This nose ensures the correct plaster depth and provides a straight edge for the trowel.
Galvanization Protection: Utilizing high-grade G60 or G90 Hot-Dipped Galvanized Steel to prevent rust streaks from bleeding through the finished wall surface.
Chemical Treatment: In some versions, the surface is treated to improve the adhesion of modern synthetic plasters.
3. Key Technical Advantages
Impact Protection: The solid metal nose reinforces the most vulnerable part of the wall (the corner), absorbing shocks that would normally shatter plaster.
Superior Bonding: The expanded mesh wings allow plaster to flow through the openings and bond directly to the substrate, creating a monolithic structure.
Installation Accuracy: Acts as a leveling guide, making it easier for workers to achieve a straight and plumb vertical corner.
Flexible Sizing: Available in various wing widths and nose heights to accommodate different plaster thicknesses (10{mm} to 20{mm}).
4. Technical Parameters
| Parameter | Specification |
| Material | Hot-Dipped Galvanized Steel, Stainless Steel 304 |
| Wing Width | 30mm, 45mm, 50mm, 63mm (Standard: 45mm-50mm) |
| Bead Height (Nose) | 2mm – 10mm (Determines plaster thickness ) |
| Thickness | 0.3{mm} - 0.5{mm} |
| Length | 2.4m, 2.7m, 3.0m (Customizable) |
| Angle | 90^(Adjustable during installation ) |
| Mesh Size | 10X20{mm} (Approx.) |
5. Key Applications
Interior Plastering: Reinforcing corners in residential and commercial rooms.
Exterior Stucco: Providing durable corners for sand-cement renders on building facades.
Door & Window Reveals: Ensuring clean, sharp lines around openings.
Archways: Specialized flexible versions (Arched Corner Beads) are available for curved structures.
