Synthetic Round Sling ASME/ANSI B30.9

Item No.: 3090
Round slings are an all-purpose lifting sling enabling a strong and non-damaging lift of a load. They are extremely light weight and flexible in multiple directions, allowing easy and quick manipulation even when fragile loads are being lifted.
Description Safe Use of Polyester Roundsling

H-Lift Synthetic Roundsling to ASME/ANSI B30.9 features:

  • Roundsling, a sling type used for general lifting or material handling purposes that is comprised of a load-bearing cores, made from synthetic yarns of unwoven continuous filament fibers, which is fully enclosed in a protective cover.

Roundsling sleeve is made of extra strong PU-impregnated webbing.

  • Low elongation, extremely lightweight, flexible and pliable.
  • Protection against cargo surface damage.
  • Basic types of round sling: endless, eye & eye and bridle (multi-legged).
  • Standard: ASME/ANSI B30.9
  • Safety Factor: 5:1

H-Lift Synthetic Round Sling


 Synthetic Roundsling China Item No. Working Load Limit(lbs) Product Code
Vertical Choker Vertical Basket 60˚ Basket  45˚ Basket  30˚ Basket 
RS03-1 2,600 2,100 5,200 4,500 3,700 2,600 309002600
RS03-2 5,300 4,200 10,600 9,200 7,500 5,300 309005300
RS03-3 8,400 6,700 16,800 14,500 11,900 8,400 309008400
RS03-4 10,600 8,500 21,200 18,400 15,000 10,600 309010600
RS03-5 13,200 10,600 26,400 22,900 18,700 13,200 309013200
RS03-6 16,800 13,400 33,600 29,100 23,800 16,800 309016800
RS03-7 21,200 17,000 42,400 36,700 30,000 21,200 309021200
RS03-8 25,000 20,000 50,000 43,300 35,400 25,000 309025000
RS03-9 31,000 24,800 62,000 53,700 43,800 31,000 309031000
RS03-10 40,000 32,000 80,000 69,300 56,600 40,000 309040000
RS03-11 53,000 42,400 106,000 91,800 74,900 53,000 309053000
RS03-12 66,000 52,800 132,000 114,300 93,300 66,000 309066000
RS03-13 90,000 72,000 180,000 155,900 127,300 90,000 309090000

Remarks: eye and eye type roundsing is available upon request.

When ordering it is important to make clear whether the length specified is circumference or effective length.

A roundsling must be immediately removed from service if any of the following forms of damage are visible:

  • Holes, tears, cuts, embedded particles, excessive abrasive wear, or snags that expose the core yarns of the roundsling.
  • Broken, cut, damaged core yarns.
  • If roundsling identification tag is missing or not legible.
  • Knots in any part of the roundslings.
  • Melting, charring or weld spatter on any part of the roundsling.
  • Acid or alkali burns.
  • Broken or worn stitching in the cover which exposes the core yarns.
  • Distortion, excessive pitting, corrosion or other damage to fitting(s).

Any conditions which cause doubt as to the strength of the roundsling



  • Synthetic slings must not be loaded in excess of rated capacity. Consideration shall be given to the sling angle, which affects sling tension.
  • Always protect synthetic slings from being cut or damaged by corners, edges and protrusions
Safe Use of Polyester Roundsling

• Store and handle roundslings correctly. 
• Inspect roundslings and accessories before use and before placing into storage. 
• Follow safe slinging practices, as given overleaf. 
• Position the bight for choke lift at 120°(natural angle). 
• Apply correct mode factor for the slinging arrangement. 
• Use protection (to avoid cutting, friction etc) and fittings which allow the sling to form smooth radii.


• Attempt to shorten, knot or tie roundslings. 
• Expose roundslings to direct heat or flames. 
• Use roundslings at temperatures above 80°C or below 0°C without consulting the supplier. 
• Expose roundslings to chemicals without consulting the supplier. 
• Shock load roundslings. 
• Use roundslings with cut or damaged outer covers. 
• Use a sling with a missing/damaged label or illegible markings

Selecting the Correct Sling 
Roundslings are available in a range of materials and sizes in endless sling form. Select the slings to be used and plan the lift taking the following into account: 
Material – polyester, identified by a blue label, is resistant to moderate strength acids but is damaged by alkalis; polyamide (Nylon) identified by a green label, is virtually immune to alkalis but is damaged by acids; polypropylene, identified by a brown label, is little affected by acids or alkalis but is damaged by some solvents, tars and paints and therefore suitable for appliances where the highest resistance to chemicals other than solvents is required. 
Capacity - the sling must be both long enough and strong enough for the load and the slinging method. 
Apply the mode factor for the slinging method. 
For use at temperatures exceeding 80°C or below 0°C refer to the supplier's instructions. 
For round slings made to BS EN 1492-2:2000 + A1: 2008 * 
Polyester and Polymide -40ºC to 100ºC Proypropylene -40ºC to 80ºC

Ranges vary in a chemical environment, in which case the advice of the manufacturer or supplier should be sought. 
If the slings are to be used in multi-leg arrangement the angle formed between the legs should not be less than 30° or greater than 90°. 
If abrasion, heat generated by friction or cutting from edges or corners which may damage the sling are likely, select a sling fitted with additional protective sleeves and/or use suitable packing. 
Slings with grade 8 fittings and multi-leg master links should not be used in acidic conditions. Contact with acids or acidic fumes causes embrittlement to grade 8 materials. If exposure to chemicals is likely, the manufacturer or supplier should be consulted.

Storing and Handling Roundslings 
Never return wet, damaged or contaminated slings to storage. They should be cleaned with clear water and dried naturally. Never force dry roundslings. 
Store roundslings by hanging on non-rusting pegs which allow the free circulation of air. 
The storage area should be dry, clean, free of any contaminates and shaded from direct sunlight. 
Do not alter, modify or repair a roundsling but refer such matters to a Competent Person.


NOTE: The material from which the roundsling is manufactured may be identified by the colour of the label or printing on the label: Polyester = Blue, Polyamide (Nylon) = Green, Polypropylene = Brown. The outer sleeve of the sling will also be colour coded to indicate the SWL in straight pull.

Using Roundslings Safely 

Do not attempt lifting operations unless you understand the use of the equipment, the slinging procedures and the mode factors to be applied. 
Do not use defective slings or accessories. 
Check for correct engagement with fittings and appliances, ensuring smooth radii are formed which allow the sling to assume its naturally flattened form under load. Do not overcrowd fittings. 
Position the bight for a choke lift at the natural (120°) angle to prevent friction from being generated. 
Keep labels away from hooks and fittings. 
Take the load steadily and avoid shock loads. 
Do not leave suspended loads unattended. In an emergency cordon off the area.

In-service Inspection and Maintenance 
Maintenance requirements are minimal. Roundslings may be cleaned with clear water. Remember weak chemical solutions will become increasingly stronger by evaporation 
Before each use inspect roundslings and, in the event of the following defects, refer the sling to a Competent Person for thorough examination: illegible markings; damaged or cut outer cover; damaged stitching; exposed inner core; heat damage; burns; chemical damage. 

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