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Polyester vs. Nylon Round Slings: Material Selection Guide as per ASME B30.9
A purchasing manager receives technical specifications for a critical lift, calling simply for "synthetic round slings" with a specific capacity.
Polyester Round Sling Capacities: Hitch Types & Angle Factors
A rigger pulls a load chart from a polyester round sling and sees "WLL: 6,200 lbs" printed on the tag. The load weighs 4,000 pounds,well under capa...
![Round Sling Edge Protection & Capacity Ratings [ASME B30.9]](https://www.hhilifting.com/media/mageplaza/blog/post/0/3/03_round_sling_capacity_ratings_edge_protection_1.png)
Round Sling Edge Protection & Capacity Ratings [ASME B30.9]
At Holloway Houston, we often see rigging crews use polyester round slings for lifting steel structures, equipment, and heavy assemblies.
Why Buy from Holloway Houston?
HHI builds custom slings in-house to your exact specs - any length, WLL, and end fitting combination.
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Frequently Asked Questions
If you couldn't find your query please write to us wirerope@hollowayhouston.com
Round Slings are used to attach a load to a hoist or crane hook for lifting, and are selected based on the load's weight, shape, and the rigging configuration (single, double, or multi-leg) needed to lift it safely.
As the angle between the sling legs and vertical increases, the load on each leg increases even though the total load stays the same. Always calculate the actual leg tension at the working angle rather than relying on the vertical-rated WLL.
Working load limit depends on the sling's material, construction, and leg configuration, and is shown on the sling's tag. The rated capacity differs significantly between vertical, choker, and basket hitches — confirm which applies to your rigging.
Inspect for cuts, abrasion, broken stitching or wires, corrosion, and tag legibility before every use, in addition to periodic documented inspection. Remove the sling from service immediately if any of the manufacturer's removal criteria are met.
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Proof testing included on all chain slings
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