WLL 300Ton Polyester Round Slings, 300000kg Heavy Duty Round Lifting Sling

Lift Sling Net Belt Factory manufacture WLL 300Ton Polyester Round Slings, 300000kg Heavy Duty Round Lifting Sling,300Ton Round Sling.

WLL 300 Ton Polyester Round Slings

Ultra-high-capacity lifting solutions rated up to 300 t WLL — powerful, soft, and safe for the heaviest lifting jobs.

1. Product Overview

A polyester round sling is a flexible, high-strength lifting tool made from continuous high-tenacity polyester yarns enclosed in a woven protective sleeve. Compared with steel chain or wire rope slings, round slings are significantly lighter and softer, which protects both the operators and the load surface.

The WLL 300 Ton model is engineered for extreme heavy lifting — large machinery, bridges, port operations, and power equipment — where capacity, reliability, and safety are non-negotiable.

2. Key Features & Benefits

• Ultra-high capacity — a single sling rated up to 300 t WLL for the most demanding lifts

• Load-friendly — soft round body distributes force evenly and leaves no scratches or marks on finished surfaces

• High safety — engineered with a 【high safety factor 6:1,7:1,8:1】, permanent WLL label, and full batch traceability

• Lightweight and easy to handle — significantly less rigging effort and labor cost than steel slings

• Durable — abrasion-resistant woven sleeve, 【UV and weather resistant】 for long service life

• Cost-effective — low maintenance and long working life reduce total ownership cost

3. Construction

• Core — continuous high-tenacity polyester (PES) filament yarns for consistent strength

• Cover — woven polyester protective sleeve with high abrasion resistance

• Eyes / Loops — 【standard eye / soft eye, reinforced】, customizable per application

• Label — permanent tag marking WLL, 【batch number】, and 【manufacturing date】

4. Technical Specifications

5. Round Sling vs. Steel Slings

For heavy lifting, polyester round slings offer practical advantages over steel chain and wire rope slings:

6. Applications

• Heavy machinery and equipment installation and relocation

• Bridge, tunnel, and building construction projects

• Port, dock, and shipyard lifting operations

• Power plant and transformer lifting

• Steel structure erection and precast component handling

• 【add your specific industry / use case】

7. Standards & Safety

• Manufactured in accordance with 【EN 1492-2 / ASME B30.9 / ISO 4878 — confirm with us】

• 【CE / GS / SGS third-party test report】 available on request

• 【Proof load test】 performed on 【200 %】 of production before shipment

• Permanent label/tag marking WLL, 【batch number】, and 【manufacturing date】 for full traceability

Usage rules: inspect the sling before each use; never exceed the working load limit; protect the sling from sharp edges and chemicals; remove from service immediately if damaged.

8. Quality Assurance

• 100% visual inspection on every sling

• 【Proof load testing】 on 【50 %】 of production output

• Traceable batch records for every order

• WLL verification and packaging check before shipment

9. Customization & OEM

• Length, loop/eye type, diameter, and color code per your specification

• Custom printing — logo, brand name, and label design

• Special packaging for export — 【PP woven bag / carton / plywood case】

• OEM production available — 【minimum order quantity per design】

10. Packaging, Shipping & Lead Time

Packaging: coils strapped and wrapped in 【PP woven bag / carton / plywood case】; export seaworthy packaging available.

Shipping: by sea, air, or express; 【EXW / FOB / CIF】 terms available.

Lead time: 【e.g. 2–30 days】 after confirmation and deposit.

11. FAQ

What is the working load limit of this sling?

The maximum working load limit (WLL) is 300 t. Never exceed the rated WLL under any circumstances — verify the label before every lift.

Can length and loop type be customized?

Yes. Effective length, loop/eye type, diameter, and color can all be customized to suit your application. Please provide your requirements when ordering.

What certificates or test reports are available?

【CE / GS / SGS third-party test report and proof load test certificate】 are available on request. Please confirm the required standard with our sales team.

What is the MOQ and lead time?

【MOQ: e.g. 1 pc; lead time: e.g. 15–30 days】 after confirmation and deposit, depending on specifications and quantity.

How should the sling be inspected and maintained?

Inspect before each use for cuts, abrasion, broken fibers, or damaged label. Remove the sling from service immediately if any damage is found. Store in a dry, cool place away from direct sunlight and chemicals.

12. Ordering Information

Please specify the following when placing an order: working load limit (t), effective length (m), loop/eye type and size, quantity, 【packaging requirements】, and destination port.

For quotes, drawings, or samples, please contact: 【Lift Sling Net Belt Factory】 · 【Email:cnlift@126.com】 · 【phone / WhatsApp:+8613961011588】 · 【website:https://www.jslift.com】