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Anping County Boli Hardware Wiremesh Products Factory, established in 1998, is a trusted manufacturer based in Hengshui, Hebei, China. With an annual export value of US$5–10 million, we serve clients across North America, South America, Europe, Asia, Africa, and Oceania. Our Round Lifting Sling with Protective Sleeve 4 Ton WLL 2m Length Flat Weave is engineered for safe, reliable lifting operations. Combining a flat weave construction with a protective sleeve, this sling offers superior durability and load protection, making it an ideal choice for demanding industrial environments.
Each sling is manufactured from high-strength polyester fibers and features a seamless, flat weave design that distributes load evenly and reduces stress on the lifting points. The integrated protective sleeve shields the sling body from abrasion, cuts, and UV exposure, significantly extending service life. With a working load limit (WLL) of 4 tons and a standard length of 2 meters, this sling is suitable for a wide range of lifting tasks, from machinery moving to construction site rigging.
Key Features & Technical Specifications
- Flat Weave Construction: Provides a wide, flat surface that minimizes pressure on the load and prevents twisting, ensuring stable lifting.
- Protective Sleeve: Made from abrasion-resistant polyester, the sleeve covers the entire sling length, protecting against sharp edges, rough surfaces, and environmental wear.
- High Strength: 4-ton WLL with a safety factor of 5:1 (standard), offering a generous margin of safety for heavy loads.
- 2 Meter Length: Ideal for common lifting heights; custom lengths are available upon request.
- Soft & Flexible: Polyester material is gentle on the load surface, reducing the risk of scratches or damage.
- Color-Coded Tags: Each sling comes with a durable tag indicating WLL, length, and safety instructions for easy identification.
- UV & Weather Resistant: Suitable for both indoor and outdoor use; resistant to most chemicals and moisture.
| Parameter | Value |
| Working Load Limit (WLL) | 4 Ton (8,000 lbs) |
| Length | 2 Meters (6.6 ft) |
| Safety Factor | 5:1 (standard) |
| Material | High-strength Polyester (100%) |
| Sleeve Material | Abrasion-resistant Polyester |
| Weave Type | Flat Weave |
| Color | Orange / Yellow (custom colors available) |
| Operating Temperature | -40°C to +100°C (continuous) |
| Standards | Complies with EN 1492-1 / ASME B30.9 (upon request) |
Why Choose Our Round Lifting Sling?
- Enhanced Safety: The protective sleeve prevents premature wear, reducing the risk of sling failure during lifting. The 5:1 safety factor exceeds industry minimums for confidence.
- Extended Lifespan: The flat weave design combined with a durable sleeve can outlast standard round slings by up to 50% in abrasive environments.
- Versatility: Suitable for use with hooks, shackles, and other lifting hardware. Can be used in choker, basket, or vertical hitches.
- Easy Handling: Lightweight and flexible, allowing one person to position and secure the sling quickly.
- Low Maintenance: Polyester resists rot, mildew, and most chemicals; simple visual inspection is sufficient for routine checks.
- Custom Options: We offer custom lengths up to 20 meters, different WLL, and special sleeve materials (e.g., Kevlar) for extreme conditions.
At Anping County Boli Hardware Wiremesh Products Factory, we have been manufacturing high-quality lifting equipment since 1998. Our 20+ years of experience, combined with strict quality control, ensures that every sling meets rigorous performance standards. We export to over 30 countries and are proud to serve industries such as construction, logistics, manufacturing, and oil & gas. Our factory in Hengshui, Hebei, utilizes advanced weaving machines and conducts 100% load testing on every batch. With an annual export value of US$5–10 million, we have the capacity to fulfill large orders while maintaining consistent quality.
We invite you to partner with us for your lifting needs. Our team is ready to provide technical support, sample testing, and competitive pricing. Contact us today to discuss your requirements or place an order. Your satisfaction and safety are our top priorities.
Frequently Asked Questions (FAQ)
Q1: What does WLL (Working Load Limit) mean?
A: WLL is the maximum load that the sling is designed to lift safely under normal conditions. Our 4-ton sling has a WLL of 4,000 kg (8,000 lbs). The safety factor (5:1) means the breaking strength is 20 tons.
Q2: What is the purpose of the protective sleeve?
A: The sleeve protects the sling body from abrasion, cuts, and UV damage. It is especially useful when lifting loads with sharp edges or rough surfaces, extending the sling's service life.
Q3: Can this sling be used for overhead lifting?
A: Yes, it is designed for overhead lifting applications. However, always inspect the sling and use appropriate rigging hardware. Avoid shock loading and sharp edges without protection.
Q4: Is the length adjustable?
A: The sling is fixed at 2 meters. We offer custom lengths (from 1m to 20m) upon request. Please contact us for a quote.
Q5: What safety factor does this sling have?
A: Our standard sling has a safety factor of 5:1. For special applications, we can manufacture slings with a 6:1 or 7:1 safety factor. Please specify your needs.
Q6: How do I know when to replace the sling?
A: Inspect before each use. Replace if you see: cuts, fraying, broken threads, heat damage, chemical damage, or if the identification tag is missing. Also replace if the sling has been used under shock load.
Q7: Are these slings suitable for marine environments?
A: Polyester is resistant to moisture and saltwater, but we recommend rinsing with fresh water after use in marine environments. The sleeve provides extra protection.
Q8: Do you provide certificates or test reports?
A: Yes, we can provide a certificate of conformity and load test reports upon request. Please inquire with our sales team.
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