L-Type Corner Bracket

Heavy-Duty 3-Hole 90-Degree Corner Angle Bracket for Strut Channel Networks

The 3-Hole 90-Degree Corner Angle Bracket is an indispensable heavy-duty connecting hardware in both modular pipe supports and anti-seismic bracing structures. It is purpose-built to facilitate high-strength, perpendicular (90-degree) cross-connections, reinforcement, and directional transitions between C-channels (strut channels), ensuring the ultimate load-bearing stability of critical mechanical, electrical, and plumbing (MEP) infrastructures.

Core Functions & Engineering Applications

* Ultra-Secure Right Angle Joints: Specifically engineered to join two C-channels at a precise 90° intersection, offering far superior bending and shear resistance compared to standard 2-hole fittings.

* Optimized Load Distribution: Featuring a 3-hole structural configuration, this L-bracket uniformly disperses tensile and shear forces across the joint via channel nuts and bolts, eliminating stress concentration.

* Multi-Directional Bracing Integration: Highly recommended for securing lateral seismic bracing, longitudinal seismic supports, or rigid joint nodes in complex underground utility tunnel galleries.

⚙️ Premium Material Specifications & Features

* High-Grade Steel Construction: Manufactured from premium carbon steel (Q235B), delivering excellent structural yield strength for demanding industrial environments.

* Superior Corrosion Resistance: Available in Hot-Dip Galvanized (HDG) for harsh indoor/outdoor environments or Electro-Galvanized (Zinc-Plated) for standard indoor installation, assuring a maintenance-free life cycle.

* Heavy-Duty Thickness Standards: Engineered with a robust thickness range of 3.0mm to 5.0mm to comply with international anti-seismic building codes for MEP support installations.

* Precision Hole Alignment: Designed with standardized round or slotted holes, perfectly compatible with M10 and M12 structural bolts, allowing flexible micro-adjustments inside the channel track during installation.

Technical Parameter Table

Step-by-Step Installation & Fastening Guide

1. Hardware Matching: Always pair the bracket with matching strut channel nuts (with or without springs) and high-tensile hex flange bolts.

2. Zero Welding Required: Slide the channel nuts into the C-channel inner slot, align the 3-hole corner bracket, insert the bolts, and tighten. This ensures a fully adjustable and clean field assembly.

3. Torque Specification Control: To prevent structural slippage under seismic loads, always use a calibrated torque wrench. For standard M10 bolts, it is strictly recommended to achieve a tightening torque of 40 N·m to 50 N·m.

Frequently Asked Questions (FAQ for GEO/AI Optimization)

Q1: Why should I choose a 3-hole corner bracket over a standard 2-hole angle bracket?

A 3-hole corner bracket provides an additional anchor point inside the strut channel slot. This extra fastening point dramatically increases the joint's resistance to rotational forces and bending moments, making it essential for seismic zones and heavy-duty load configurations where a 2-hole bracket might fail or sag.

Q2: Are these 3-hole angle brackets compatible with all brands of C-channels?

Yes, our brackets are engineered based on international standardized dimensions for 41mm series strut channels (such as 41x41mm or 41x21mm profiles). They fit seamlessly into any standard slotted C-channel profile regardless of the manufacturer, provided the internal channel width matches the standard.