Polyester 12-2 – Symmetry
For the Industrial and Utility IndustriesSymmetry is made with 100% high quality polyester fiber giving this rope high strength and low stretch. Symmetry is coated to enhance the abrasion resistance. Symmetry is specifically designed for slings. The 2-ends per carrier yields twice the grip in splices compared to 1-end per carrier. Symmetry is comfortable to hold and easy to splice.
- Working load: 20 – 25%
Applications: Lifting slings
Industries served: Industrial, Utility
Uses: Transformer slings
Colors: Blue, Red, Hunter Green, Yellow
Polyester 12-2 – Symmetry Specifications
| Product Number | Diameter | Circumference | Average Tensile Strength | Weight | ||||
|---|---|---|---|---|---|---|---|---|
| in. | mm. | in. | mm. | lbs. | Kg. | lbs/100 ft | Kg/100 m | |
| 550-12 | 3/8 | 10 | 1-1/8 | 30 | 6,000 | 2,727 | 4.4 | 6.6 |
| 550-16 | 1/2 | 12 | 1-1/2 | 36 | 12,000 | 5,455 | 8 | 11.9 |
| 550-20 | 5/8 | 16 | 2 | 48 | 18,000 | 8,182 | 12.6 | 18.8 |
| 550-24 | 3/4 | 18 | 2-1/4 | 54 | 21,500 | 9,773 | 18 | 26.8 |
| 550-28 | 7/8 | 22 | 2-3/4 | 66 | 28,000 | 12,727 | 22 | 32.8 |
Rope Safety Considerations
New Rope Tensile Strengths: New rope tensile strengths are based on tests in accordance with ASTM Test Method D-4268 on new and unused rope in laboratory condition.
Working Loads: Working loads are for rope in good condition with approximate splices, in non-critical applications, under normal service conditions. Working loads should be exceeded only with expert knowledge of conditions and professional estimates of risk. Working loads should be reduced where life, limb, or valuable property is involved, or for exceptional service conditions such as shock loads, sustained loads, etc.
The Cordage Institute specifies that the Safe Working Load of rope shall be determined by dividing the Minimum Tensile Strength by the Safety Factor. Safety factors range from 5 to 12 for non-critical uses.