Product Overview
This Single Straight Ladder is a 3-meter aluminum alloy fire ladder, model TDL3. The main body is made of aluminum alloy and complies with the XF137-2007 Fire Ladder standard.
The Single Straight Ladder 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.
Thoughtful Craftsmanship Details
The working length is 3 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 6.5 kg, with a tolerance of ±0.5 kg.
The lightweight design and standardized dimensions ensure easy handling and precise manufacturing.
Core Component Materials
The side rails are made of 6061-T6 aluminum alloy, which offers high strength and toughness to withstand operational loads.
The rungs are made of aluminum alloy and are sturdy, durable, and equipped with anti-slip surfaces.
High-quality materials are used for all core components, ensuring overall structural stability.
Structural Stability
The horizontal bending residual deformation ratio is no greater than 0.06%, which is far below the standard requirement of 0.15%.
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.
During the warpage test, all ladder feet remained in contact with the ground.
The torsion angle is ≤6.5° in the forward direction and ≤6.0° in the reverse direction, both within the specified limits.
Practical Performance
During the slippage test, no displacement occurred on the test surface, ensuring stable operation.
After completion of the single-leg load test, the support legs and connecting fittings showed no loosening, damage, or deformation.
The maximum cantilever bending deformation of the side rails was ≤1.0 mm for inward bending and ≤0.8 mm for outward bending, indicating minimal deformation.
During the lateral sway test, the residual deformation ratio was ≤0.04%, far below the standard requirement of 0.3%.
All performance indicators meet the relevant standards and are suitable for firefighting operations.
Opening and Closing Structure Features
When unfolded, the angle between the rungs and side rails forms a standard right angle, ensuring even load distribution.
When folded, the side rails remain straight without warping or misalignment, resulting in a compact and orderly storage configuration.
Unfolding and folding are simple and can be completed quickly by a single person. The compact folded size facilitates transportation, storage, and on-site handling.
Workmanship Details
The rungs and side rails fit tightly, with no looseness or jamming.
The metal rungs feature anti-slip surfaces to enhance operational safety.
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.
Official Certification and Accessories
A dedicated nameplate is affixed to the side rails, clearly indicating the product name, model, and other key information.
Warning labels are applied, and official certification marks are affixed after certification.
An instruction manual is included to guide proper operation and maintenance.
All product markings are complete and compliant with relevant fire protection product regulations.
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