50kN Heavy-Duty Alloy Steel D-Shaped Professional Carabiner Series

High-strength alloy steel D-shaped carabiner series designed for heavy-duty rescue, rigid high-altitude anchoring, and extreme industrial conditions. With a breaking strength of up to 50kN, the asymmetric D-shape mechanical design automatically directs the load toward the main spine under stress. The alloy steel construction is extremely wear-resistant and durable, capable of withstanding years of friction and cutting from steel cables, metal hangers, and jagged rock walls; the nose features a Keylock anti-snag design, ensuring smooth and efficient operation during high-load tasks.

Key Features

• 50kN Ultimate Breaking Load: Longitudinal strength of 50kN and transverse strength of 15kN, far exceeding standard aluminum alloy carabiners; the preferred choice for heavy-duty rescue and rigid systems.

• High-Hardness Alloy Steel: Resistant to impact, deformation, and extreme wear, preventing burrs or deep grooves even after prolonged contact with wire ropes or sharp metal components.

• Asymmetric D-Shape Mechanical Structure: Self-orienting under load, preventing connectors from shifting sideways and ensuring they remain locked in the strongest axis.

• Keylock Smooth Nose Design: Seamless and snag-free, allowing for smooth insertion and removal from equipment holes, cable thimbles, or webbing loops without catching.

• Textured Anti-Slip Locking Sleeve: Deeply embossed non-slip grip on both manual and auto-locking sleeves, ensuring agile operation even when wearing heavy gloves or working in wet, muddy conditions.

Specifications

• Main Material: High-strength alloy steel

• Ultimate Strength: Longitudinal 50kN | Transverse 15kN | Open Gate 10kN

• Dimensions: Width 69mm × Height 113mm

• Gate Opening: 22mm

• Weight (per unit): Approx. 237g

• Certifications: CE 1019, EN 12275, EN 362, XF 494-2023

Explanation of the Three Gate Mechanisms

• 【Manual Screw Lock】: Classic threaded sleeve; a durable structure resistant to sand and dust jamming, providing a solid, tactile locking sensation.

• 【2-Stage Auto Lock】: Twist-to-open, automatically snaps shut upon release, balancing speed of access with protection against accidental opening due to vibration.

• 【3-Stage Auto Lock】: Triple-action protection (push, twist, pull), offering the highest level of security against accidental opening, compliant with strict industrial fall protection and rescue standards.