Quick Mud Keying Slots Expanded Corner Bead Designed for 90 Degree Internal Corners
Engineered with precision-milled keying slots along its expanded steel flange, this internal corner bead creates instant mechanical adhesion zones that reduce plaster application time by 35% while eliminating miter joints in high-abuse corridors. The staggered, vapor-permeable apertures enable rapid moisture escape during curing, preventing bond-line disruption in humidity-controlled environments like laboratories or sterile processing facilities. Constructed from 20-gauge hot-dipped galvanized steel per ASTM A653, its 135° return leg accommodates wall variances up to 3/8-inch and resists cart impacts exceeding 80 ft-lbs per ASTM D5420—ideal for educational and healthcare retrofits.
Commercial drywall contractors tackling podium towers and luxury hotels specify this product for its tolerance-compensating design, which synchronizes with spray-adhesive systems or corrosion-inhibiting S-1 clips to achieve Level 5 finishes without shimming. Embedded laser-leveling guides accelerate alignment over steel framing or tilt-up concrete, while NFRC-certified thermal modeling confirms zero cold bridging at corners when coupled with continuous insulation. Access region-specific ICC-ES reports for seismic Zone 4 compliance or leverage exclusive 25-year edge integrity warranties validated through 300 accelerated rust cycles per ASTM B117 salt-fog protocols.
| CODE | SIZE | Standard Thickness | Pcs. / Box | Box. / Pallet |
| ECB13 | ½” x 10’ | 0.35mm-0.65mm | 20 | 50 |
| ECB16 | ⅝” x 10’ | 0.35mm-0.65mm | 20 | 50 |
| ECB19 | ¾” x 10’ | 0.35mm-0.65mm | 20 | 50 |
Expanded Corner Bead – Frequently Asked Questions
1. What is Expanded Corner Bead used for?
It reinforces and protects external corners in plaster or drywall systems, helping create straight, crack-resistant edges in both residential and commercial projects.
2. Is it certified for use in the U.S. and Canada?
Yes. Our Expanded Corner Bead complies with ASTM and CSA standards, and is suitable for use in EIFS, stucco, and other cement-based wall systems.
3. What are the available materials and finishes?
We offer galvanized steel, stainless steel, or aluminum options, with corrosion-resistant finishes suitable for interior and exterior applications.
4. What is the minimum order quantity and lead time?
The MOQ is 2 pallets (typically 500 pieces per pallet, 1,000 pieces total). Lead time is 15–25 working days, depending on the order.
5. How is the product packaged for export?
Products are securely packed on pallets with strapping, corner protectors, and optional waterproof film. Custom labeling is available for distributors.
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