Single Chain Sling

Two Leg Chain Sling

Three Leg Sling

Four leg Sling

Double Loop

Endless Sling

Proof Load Testing
After final heat treatment slings with accessories shall be tested as an assembly, multi- leg chain slings shall be tested in sections. Individual sections of the chain slings shall be subjected to 2.0 times the load to which the section will be subjected when the assembly is subjected to its working load limit in accordance with the plan.


Lifting capacity of sling / working load limit (MT)
Rating
Single Branch slings
Single branch slings shall have a working load limit equal to that of the Chain used in their construction
Multi Branch slings
Multi branch slings shall be rated at a uniform working load limit for an angle between branches of 90o-120o(45o- 60o to the vertical) or additionally a ta uniform working load limit for any angle between branches of 90o-120o(45o- 60o to the vertical ).
Uniform Load Method
Double branch slings
For all angles between branches from 0°- 90° (0°- 45° to the vertical)
WLL = 1.4 x WLL of a single branch made from similar chain. When additionally marked for angles between branches of 90°- 120° (45°- 60° to the vertical)
WLL = 1 x WLL of single branch made from similar chain.
Three and four branch slings
For all angles between branches from 0°- 90° (0°- 45° to the vertical)
WLL = 2.1 x WLL of a single branch made from similar chain. When additionally marked for angles between branches of 90°- 120° (45°- 60° to the vertical)
WLL = 1.5 x WLL of single branch made from similar chain.