Product Overview
This Fire brigade hook ladders is a 4-meter aluminum alloy fire hook ladder, model TGL4. The main body is made of aluminum alloy and complies with the XF137-2007 Fire Ladder standard.
The Fire brigade hook ladders has passed type testing conducted by the National Fire Equipment Quality Inspection and Testing Center and has obtained CCC certification from the Fire Product Conformity Assessment Center of the Ministry of Emergency Management. All test results meet the required standards.
Core Specifications
The working length is 4 meters, with a tolerance of ±0.1 meters.
The minimum ladder width is 250 mm, with a tolerance of ±2 mm.
The rung spacing is 340 mm, with a tolerance of ±2 mm.
The total ladder weight is 7 kg, with a tolerance of ±0.5 kg.
The lightweight overall design makes the ladder convenient to handle and operate.
Main Materials
The side rails are made of 6061-T6 aluminum alloy.
The rungs are made of 6463 aluminum alloy.
The hooks are made of No. 45 steel.
All components are manufactured from specialized materials, achieving a balance between structural strength and practical usability.
Structural Strength Performance
The horizontal bending residual deformation ratio is no greater than 0.08%, which is far below the standard requirement of 0.20%.
The rung bending residual deformation ratio is 0.08%, meeting the standard requirement of no more than 0.5%.
The rung shear strength complies with the standard; no breakage occurred at the connection between the rung and the side rail, nor in the rung itself during testing.
The hook strength meets the required standards. After testing, the hooks showed no damage, deformation, or cracks.
The torsion angle of the ladder section is no more than 8.5° in the forward direction and 8.0° in the reverse direction, both within the specified limits.
During the lateral sway test, the residual deformation ratio was 0.05%, which is far below the standard requirement of 0.3%.
Workmanship Details
The rungs and side rails fit tightly, with no looseness or jamming.
The metal rungs feature anti-slip surfaces to enhance safety during use.
All fasteners are securely tightened, with no protruding nail heads, sharp edges, or burrs.
The rivets are firmly installed, with flat, semi-circular heads.
The outer surface is smoothly polished, free of burrs, and smooth to the touch.
Operational Performance
The ladder unfolds and retracts smoothly without jamming during use.
The positioning device is reliably designed, ensuring stable locking after unfolding and preventing loosening.
The ladder is easy to operate, and a single person can complete basic unfolding and retraction.
The hooks are securely connected, providing stable attachment and ensuring operational safety.
Accessories and Labels
A dedicated nameplate is affixed to the right side rail, displaying the product name, model, specifications, and other key information.
Clear warning labels are included, and official certification marks are affixed where applicable.
An instruction manual is provided for convenient reference regarding usage methods and safety precautions.
All markings are clear and complete, and accessories are fully supplied, complying with relevant fire safety product requirements.
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