Multi-Color High-Strength Polyester Flexible Round Lifting Sling

Compared with steel wire rope and chain, the greatest value of the multi-color high-strength polyester flexible circular slings in the fact that it does not damage the workpiece. Its contact surface is soft and wide, so it leaves no indentation or scratches when lifting machined surfaces, painted surfaces or polished surfaces, and there is no need for extra wooden blocks or rubber pads. Combined with its light weight, the ability to rotate the wear point, and the fact that it is unaffected by moisture and will not rust, it is rapidly replacing metal slings in mould handling, wind power, precision machine tools and steel pipe warehousing, and has become one of the categories with the highest repeat purchase rate in recent years. It is precisely this "core inside, soft outside" design that allows it to lift loads of more than ten tonnes while conforming to the workpiece surface like a piece of cloth.

Product Description

Structure: The multi-color high-strength polyester flexible round lifting sling has an inner layer of high-strength polyester industrial filament tow arranged in an endless loop, which carries the entire working load; the outer layer is a woven polyester protective sleeve that is abrasion-resistant, clearly marked and allows direct visual inspection.

Why it is called "flexible":

● Soft and conforming — the round cross-section can be bent freely, and when wrapped around steel pipes, shafts and rollers or irregular-shaped parts, the contact area is far greater than that of a flat webbing sling, so the load is distributed more evenly.

● Can be rotated in use — there is no fixed load-bearing surface; once one contact point is worn, it can be turned to the other side, so wear is distributed evenly and the service life of the whole sling is extended.

● Light and labor-saving — at the same tonnage its own weight is only a tiny fraction of that of a chain, so a single person can carry and position it, reducing labor intensity.

● Will not damage the load — no hard metal contact, non-conductive and non-corrosive, suitable for clean workshops and finished-goods stations where impact must be avoided.

● Easy to identify — the sleeve is printed with color code stripes together with tonnage, length and batch number, so on-site checking is clear at a glance and graded management is easy.

FAQ

Q1. What is the difference between a multi-color high-strength polyester flexible round lifting sling and a flat webbing sling?

A. The flexible round sling has a structure of filament tow core plus protective sleeve, with a round cross-section; it conforms to curved surfaces and can be rotated to alternate the wear point. The flat webbing sling is a single flat piece of woven webbing with a fixed load-bearing surface, but damage can be judged by visual inspection.

Q2. The sleeve has been cut open — can it still be used?

A. The key is whether you can confirm that the internal load-bearing filaments are intact. The sleeve itself carries no load; if it is only a surface abrasion and inspection through the inspection window confirms the filaments are undamaged, it may continue to be used with a record made. If the core can be seen at the cut or cannot be confirmed, it must be scrapped immediately — no estimation allowed. For any dispute, it is recommended to write the discard criteria into the acceptance terms before placing the order, so that inconsistent interpretations do not arise at inspection.

Q3. Does the lifting angle reduce the load capacity?

A. Yes, and the effect is significant. With two-leg lifting, the larger the included angle, the higher the load on each leg: at a 60° included angle the load on each leg is about 1.15 times that of vertical lifting, and at 120° it can reach 2 times. Selection must be calculated on the most unfavorable angle; the workpiece weight cannot simply be copied across.

Q4. How do I read the tonnage color code?

A. According to the EN 1492-2 color code: 1T purple, 2T green, 3T yellow, 4T grey, 5T red, 6T brown, 8T blue, 10T and above orange. The color corresponds to the tonnage, and length and batch number are printed on the sleeve together with it. For repeat orders, simply quoting the color or model is enough — there is no need to provide the full set of parameters again, and lead time is shorter.

Q5. The workpiece has sharp edges — will using it directly cut the sling?

A. Yes, and this is the main cause of failure for flexible round slings. All edges, burrs and weld reinforcement must be isolated with corner protectors before lifting. We list corner protectors as an option in our quotation, and recommend verifying them together during the sampling stage.

Q6. Can the length, tonnage and printed markings of the multi-color high-strength polyester flexible round lifting sling be customized? What is the minimum order quantity?

A. Yes. Length, tonnage, sleeve thickness and marking content can all be customized to requirements; conventional tonnages can be ordered without a full container, and the minimum order quantity is flexible. The specific MOQ and lead time depend on tonnage and degree of customization. Inquiries are welcome for a quotation sheet.

Q7. How long can it be used? When must it be scrapped?

A. There is no unified mandatory service life; it is judged by condition. Stop using it immediately if any of the following occurs: sleeve damage with the core visible; label missing or illegible; core filaments broken or tangled; large-area melting or frictional burn damage; permanent elongation after loading exceeding 3%; strong alkali corrosion or obvious hardening. It is recommended to establish a quarterly inspection log, so that batches reaching the replacement point can be reordered together.

About ShengYu

Hebei ShengYu Hoisting Machinery Factory specializes in the manufacture of lifting and lashing products. The multi-color high-strength polyester flexible round lifting sling uses continuous high-strength polyester filament tow as its core, and the sleeve is woven on dedicated braiding machines. Every sling undergoes visual and dimensional double inspection before leaving the factory, and batch load test reports can be provided. Length, tonnage, sleeve thickness and printed markings can all be customized to requirements. Buyers may request a specification confirmation sheet at the inquiry and price comparison stage, and measure the elongation under rated load and inspect the sleeve structure at the sampling and trial-order stage; confirming everything is correct before moving to bulk purchase and placing the order can effectively avoid later quality disputes and the cost of returns and replacements.

Tel: 15133220087 (same as WeChat) | Email: Kate@syhoist.com