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The double-leg chain rigging is a complete set of lifting tools composed of two high-strength alloy steel chains, connecting rings and hooks (or special grippers), designed for double-leg symmetrical lifting tasks. Its core structure disperses the load through two chains, making it suitable for hoisting and suspending objects of different shapes and weights, especially for scenarios where the center of gravity shifts or where force needs to be balanced.
Load balancing system
The double-branch structure combined with the balance beam design can automatically adjust the force difference on both sides of the chain (error ≤5%), avoiding the deformation risk caused by unilateral overload. It is particularly suitable for hoisting goods with asymmetrical shapes.
Redundant safety protection
Double insurance mechanism: When one leg fails unexpectedly, the other leg can still maintain 70% of the rated load, leaving emergency operation time for rescue.
Quick length adjustment
It can achieve ±15cm fine-tuning of the single-sided chain without tools, solving the needs of scenarios with high requirements for hole position accuracy, such as containers and steel structures.
ergonomic improvement
The mid-mounted rotating lifting ring design enables the operator to control the retraction and extension of the two chains with one hand, which increases efficiency by 40% compared to the traditional split structure.
S (6) grade chain rigging
Angle specification | Single limb(T) | Two limbs(T) | Three limbs(T) | Four limbs(T) | |||
0° | 0-45° | >45-60° | 0-45° | >45-60° | 0-45° | >45-60° | |
Load conversion coefficient | 1 | 1.4 | 1 | 2.1 | 1.5 | 2.1 | 1.5 |
φ6 | 1 | 1.4 | 1 | 2.1 | 1.5 | 2.1 | 1.5 |
φ8 | 1.5 | 2.1 | 1.5 | 3.1 | 2.2 | 3.1 | 2.2 |
φ10 | 2.5 | 3.5 | 2.5 | 5.2 | 3.7 | 5.2 | 3.7 |
φ12 | 3.5 | 4.9 | 3.5 | 7.3 | 5.2 | 7.3 | 5.2 |
φ14 | 5 | 7 | 5 | 10.5 | 7.5 | 10.5 | 7.5 |
φ16 | 6 | 8.4 | 6 | 12.6 | 9 | 12.6 | 9 |
φ18 | 8 | 11.2 | 8 | 16.8 | 12 | 16.8 | 12 |
φ20 | 10 | 14 | 10 | 21 | 15 | 21 | 15 |
φ22 | 12 | 16.8 | 12 | 25.2 | 18 | 25.2 | 18 |
φ24 | 14 | 19.6 | 14 | 29.4 | 21 | 29.4 | 21 |
φ26 | 17 | 23.8 | 17 | 35.7 | 25.5 | 35.7 | 25.5 |
φ30 | 22 | 30.8 | 22 | 46.2 | 33 | 46.2 | 33 |
φ34 | 29 | 40.6 | 29 | 60.9 | 43.5 | 60.9 | 43.5 |
When using chain slings, it is advisable to use a β Angle of no more than 45°. If not specified, it is assumed to be this Angle by default. The β Angle is the Angle between the chain limb and the vertical line. | |||||||
The above load conversion coefficients and the corresponding rated loads are used when the loads are symmetrically distributed. When they are asymmetrical, the load conversion coefficients should be modified as follows: | |||||||
Asymmetric load conversion coefficient | - | 1 | 0.8 | 1.5 | 1 | 1.5 | 1 |
The lifting rings and lifting ring combinations are selected from factory standard products, with a tonnage equal to or slightly greater than the overall load of the rigging. | |||||||
T (8) grade chain rigging
Angle specification | Single limb(T) | Two limbs (T) | Three limbs(T) | Four limbs(T) | |||
0° | 0-45° | >45-60° | 0-45° | >45-60° | 0-45° | >45-60° | |
Load conversion coefficient | 1 | 1.4 | 1 | 2.1 | 1.5 | 2.1 | 1.5 |
φ6 | 1.12 | 1.57 | 1.12 | 2.35 | 1.68 | 2.35 | 1.68 |
φ8 | 2 | 2.8 | 2 | 4.2 | 3 | 4.2 | 3 |
φ10 | 3.15 | 4.41 | 3.15 | 6.61 | 4.72 | 6.61 | 4.72 |
φ13 | 5.3 | 7.42 | 5.3 | 11.13 | 7.95 | 11.13 | 7.95 |
φ16 | 7.8 | 10.92 | 7.8 | 16.38 | 11.7 | 16.38 | 11.7 |
φ20 | 11.2 | 15.68 | 11.2 | 23.52 | 16.8 | 23.52 | 16.8 |
φ22 | 15 | 21 | 15 | 31.5 | 22.5 | 31.5 | 22.5 |
φ26 | 21.2 | 29.6 | 21.2 | 44.5 | 31.8 | 44.5 | 31.8 |
φ32 | 31.5 | 44.1 | 31.5 | 66.15 | 47.25 | 66.15 | 47.25 |
When using chain slings, it is advisable to use a β Angle of no more than 45°. If not specified, it is assumed to be this Angle by default. The β Angle is the Angle between the chain limb and the vertical line. | |||||||
The above load conversion coefficients and the corresponding rated loads are used when the loads are symmetrically distributed. When they are asymmetrical, the load conversion coefficients should be modified as follows: | |||||||
Asymmetric load conversion coefficient | - | 1 | 0.8 | 1.5 | 1 | 1.5 | 1 |
The lifting rings and lifting ring combinations are selected from factory standard products, with a tonnage equal to or slightly greater than the overall load of the rigging. | |||||||
Double-leg chain slings are highly efficient hoisting solutions in the heavy industry sector. They are widely used in the metallurgical industry for adding furnace charges and transporting steel billets, symmetrical hoisting of containers and yard management at ports and docks, balanced hoisting of high-rise steel structures and handling of concrete components at construction sites, as well as heavy equipment bundling and transportation in the logistics field.

Lishenflex specializes in manufacturing premium Rigging & Lashing Solutions,such as 2 leg lifting chains, compliant with US (ASME), EU (EN), and Japanese (JIS) standards since 1988. Our automated production lines from braiding and dyeing to sewing and testing ensure every product meets strict international safety requirements. With extensive experience in global trade, we provide customized OEM/ODM solutions for diverse industries including wind power, marine, and heavy logistics. Supported by in-house R&D and rigorous quality control, we deliver reliable, high-performance lifting products trusted by clients worldwide.


If you have any questions about 2 leg lifting chains, 2 leg lifting chain, 2 way lifting chains,lifting chains 2 leg,2 leg chain lifting slings,please don't hesitate to contact us at any time. We will provide detailed information and technical support about the features, specifications, solutions and customization options of Round slings, Flat webbing slings and Other Lifting & Lashing Gear products ... Welcome you to visit our factory! Let us be your trusted partner in optimizing material handling efficiency worldwide.