6x19 filler (often referred to as 6x25) is available with both FC (fibre core) and IWRC (independent wire rope core). With a fibre core, and due to the smaller wires used within the construction, 6x19 filler will generally achieve a superior fatigue life to the other 6x19 constructions. 6x19 filler wire rope has been a very popular construction for producing wire rope slings from 1 tonne safe working load up to 5 tonnes. One very good example is the high volume use of this construction in the North Sea Oil industry where it is used for the production of pipeslings.

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