Surely this type of chain is *not* suitable for lifting? From the name
'proof coil' I imagined samples had been tested by a proof test house and
warranted to carry a certain load.
As far as examination goes it's why straps or even ropes are better than
chains for home use. I realise chains are used commercially but then they
are periodically tested. A chain only needs one weak link to fail suddenly
and totally, a rope or strap has very many fibres or strands and many can
break before it becomes unsafe, and are easy to spot. It's why
lifts/elevators use multiple stranded wire cables, at the safety inspections
a sample length is measured off and the number of broken strands counted.
When they reach a certain number the cable is replaced (next time you are in
one imagine all those broken strands above you ...).
----- Original Message -----
> PROOF COIL, known also as Common Coil chain, is the standard
> commercial quality regularly stocked by hardware and industrial
> supply houses. It is a general purpose chain for pulling or
> restraining applications requiring neither a maximum of tensile nor
> impact strength. It is commonly used for log chains and towing.
>
> So I guess it really isn't anything special.
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