Round Sling | Lightweight High Strength
Round Sling">
round sling: about 2 to 3 times the strength of high-strength polyester at roughly one third of the weight, with much better cut resistance and a soft endless body that will not mark the load. Made to EN 1492-2 with a 7:1 safety factor in Taizhou, China.">
round sling with soft protective sleeve on a factory floor">
Round Sling | Lightweight High Strength Round Sling">
round sling: 2 to 3 times the strength of high-strength polyester at one third of the weight, better cut resistance, soft endless construction. 7:1 safety factor.">
UHMWPE Round Sling
Lift Sling Rigging Co., Ltd manufactures high strength UHMWPE round slings: an endless
round sling built from a continuous UHMWPE / HMPE yarn core inside a soft woven protective sleeve.
For the same sling size it gives about two to three times the strength of high-strength
polyester, at roughly one third of the weight, and it resists cutting and
abrasion far better. The soft endless body has no metal fittings, so it will not scratch or mark the
load, and it coils down small enough to carry in one hand.
Why choose a UHMWPE round sling?
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Two to three times the strength of high-strength polyester. The same working load
limit in a much smaller, softer sling — or a far higher working load limit in the size you
already use.
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About one third of the weight. A UHMWPE round sling that lifts what a heavy
high-strength polyester sling lifts can often be carried and positioned by one person, which saves
real time at height, offshore and anywhere the sling has to be walked to the lift point.
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Better cut and abrasion resistance. The UHMWPE core and sleeve stand up to steel,
plate, castings, scrap and rough concrete far better than high-strength polyester or nylon.
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Soft, high strength rope construction. A flexible endless loop with no metal
fittings and no hard spots: it wraps tight around awkward shapes and it will not scratch, dent or
mark machined, painted or polished surfaces.
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Very low stretch. UHMWPE has a very low elongation at working load, so the sling
stores little energy and the lift stays tight and predictable.
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Very low water absorption — it floats. The sling does not take on water, does
not stiffen and does not rot, and a dropped sling can be recovered from the water.
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Excellent chemical and UV resistance. It holds up in salt water, oils and most
acids and alkalis, indoors and outdoors.
-
Colour coded and traceable. Colour coded by working load limit for quick
identification on site, with a sewn on label and a proof load report.
UHMWPE compared with high-strength polyester and nylon
Comparison of round sling materials for heavy lifting
| Property |
UHMWPE / HMPE |
High-strength polyester |
Nylon (PA) |
| Strength for the same sling size |
About 2 to 3 times |
Reference |
Lower than polyester |
| Weight for the same WLL |
About one third |
Reference |
Heavier than polyester |
| Cut and abrasion resistance |
Excellent |
Good |
Good |
| Elongation at working load |
Very low |
Low |
High, absorbs shock |
| Water absorption |
Very low, floats |
Low |
High, loses strength wet |
| UV and chemical resistance |
Excellent |
Very good |
Good |
| Working temperature |
Up to about 80 °C |
About 90 °C |
About 90 °C |
| Best used where |
Weight, bulk and cut damage matter |
General purpose heavy lifting, best value |
Shock loading and soft loads |
Construction and design
- Endless round sling: a continuous UHMWPE / HMPE yarn core wound into a loop, with no sewn ends, no joints and no metal fittings.
- Soft woven protective sleeve over the core, so the load bearing yarn never touches the load or the hook directly.
- Double braided rope body available where a firmer, more abrasion resistant cover is wanted.
- Reinforced wear points and optional extra outer sleeve for sharp or abrasive edges.
- Colour coded by working load limit, with a sewn on capacity label.
- Safety factor 7:1 to EN 1492-2 — every sling is proof loaded before it leaves the factory.
Standard capacity range
Standard capacities, colour coding and 7:1 safety factor
| WLL |
Colour code |
Minimum breaking load (7:1) |
Sleeve diameter (reference) |
| 1 t | Violet | 7 t | 38 mm |
|---|
| 2 t | Green | 14 t | 45 mm |
|---|
| 3 t | Yellow | 21 t | 50 mm |
|---|
| 4 t | Grey | 28 t | 55 mm |
|---|
| 5 t | Red | 35 t | 60 mm |
|---|
| 6 t | Brown | 42 t | 65 mm |
|---|
| 8 t | Blue | 56 t | 75 mm |
|---|
| 10 t | Orange | 70 t | 85 mm |
|---|
Large tonnage round slings up to 100 t and above, intermediate capacities and any working
length are made to order — see our
large tonnage circular lifting belt.
Sleeve diameters in the table are reference values — give us the working load limit and the
length and we will confirm the exact sleeve, weight and packed size for your order.
Markings and traceability
Every sling carries a sewn on label with the information needed for safe use, for
inspection and for audit:
- Working load limit in tonnes, with the matching sleeve colour code.
- Effective length in metres.
- Material — UHMWPE / HMPE.
- Safety factor — 7:1.
- Standard complied with — EN 1492-2.
- Manufacturer name, date of manufacture and a unique traceability number.
- QR code or barcode traceability on request, linked to the test certificate.
Applications for heavy lifting
- Offshore and marine — a sling that floats, does not absorb water and does not corrode, for deck lifts, subsea work and salvage.
- Shipyards and dry docks — heavy sections, blocks and machinery in a wet, abrasive environment.
- Wind energy — tower sections, nacelles and blades, including work at height where sling weight and handling time matter.
- Steel fabrication and plate handling — sharp edges and abrasive surfaces where cut resistance is decisive.
- Precast concrete and tunnel segments — strong, non marring and easy to place in tight shutters.
- Heavy machinery, dies and moulds — precise, low stretch lifts of finished parts that must not be marked.
- Dredging and civil engineering — wet and abrasive conditions where polyester ages quickly.
- Aviation, defence and rescue — the highest strength to weight ratio in a soft, stowable sling.
Customisation options
- Working load limit and effective length made to your drawing, from 1 t to 100 t and above.
- Sleeve colour, sleeve material and extra outer covers for abrasive or sharp loads.
- Double braided rope construction for a firmer, more durable cover.
- Your own colour, printed logo, label layout and customer part numbers.
- Test certificate to EN 1492-2 and a proof load report with every shipment.
Quality control and testing
UHMWPE yarn is wound, sleeved, sewn and finished in our own workshop in Taizhou, Jiangsu. Every
production batch is checked for core construction, sleeve weave and stitch pattern, and every finished
sling is proof loaded before packing. Minimum breaking load is verified on the test bed and recorded
against the sling’s traceability number, so the certificate that ships with the sling can always be
traced back to the batch and the test record.
Download our sling inspection sheet and help documentation
Frequently asked questions
What is a UHMWPE round sling?
It is an endless round lifting sling. A continuous core of UHMWPE (ultra-high-molecular-weight
polyethylene, also called HMPE) yarn is wound into a loop and covered by a soft woven protective sleeve,
so there are no sewn ends, no eyes and no metal fittings. It is used in vertical, choker and basket
hitches, and it is the sling of choice where lifting weight, bulk and cut damage are the limiting
factors.
How strong is UHMWPE compared with polyester?
For the same sling size, a UHMWPE sling gives roughly two to three times the strength of a
high-strength polyester sling. That means the same working load limit in a much smaller and lighter
sling, or a far higher working load limit in the size you already use.
How much lighter is it than high-strength polyester?
About one third of the weight for the same working load limit. A 10 t UHMWPE round sling can often be
carried and positioned by one person, which matters on site, at height and on offshore work where
hauling a heavy polyester sling to the lift point is the slowest part of the job.
Are UHMWPE slings cut resistant?
Yes. UHMWPE has much better cut and abrasion resistance than high-strength polyester or nylon, which is
why it is used on steel, plate, castings, scrap and other loads with sharp or abrasive edges. We can add
a protective sleeve or an extra outer cover where edges are very sharp.
Does a UHMWPE round sling float and does it absorb water?
UHMWPE has very low water absorption and a density below 1.0, so the sling does not take on water and
will float. It does not stiffen, swell or rot when wet and it keeps its strength, which makes it suitable
for marine, offshore, dredging and salvage work.
What working load limits and lengths can you supply?
Standard capacities from 1 t to 100 t, and larger capacities, intermediate capacities and any working
length from about 1 m upward are made to order. Tell us the working load limit, the effective length,
the hitch type and the environment and we will confirm the sleeve, the colour code and the weight.
What temperature can a UHMWPE sling work at?
UHMWPE slings are normally rated for about -40 °C to +80 °C. Keep the sling away
from hot surfaces, weld spatter and open flame; where heat is unavoidable use an
aramid round sling instead.
Care, inspection and safe use
- Inspect the sling before every lift: cuts, abrasion, broken or pulled yarns, a damaged or slipping sleeve, chemical damage, heat damage and a missing or illegible label.
- Check the sleeve before every lift — a cut or worn sleeve exposes the core, so retire the sling or have it re-sleeved.
- Protect the sling from sharp edges with a sleeve or a corner protector, and never drag a load over the sling.
- Do not exceed the working load limit, and remember that capacity falls in choker and multi-leg configurations.
- Store clean and dry, out of direct sunlight, away from heat sources and chemicals.
- Wash only with clean water and a mild detergent; never machine wash or tumble dry.
- Retire the sling immediately if the label is missing, if the sleeve or core is cut or badly abraded, or if the sling has been overloaded or shock loaded.
Request a UHMWPE round sling quotation
Tell us the working load limit, the effective length, the hitch type and the environment the sling will
work in, and we will come back with the right sleeve, colour code, weight and a factory direct price.
Custom lengths, printed logos, protective sleeves and test certificates are all part of the service.
Send an enquiry
or call 18066002268
or email 702461526@qq.com.
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