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Electric hoists represent their own machinery, strength, and toughness, while the stage is elegant, flowing, and soft, with conflicts and collisions between the two.
polyester lifting slings deliver unparalleled safety and reliability for industries such as construction, logistics, and heavy machinery. Always source from ISO- or CE-certified manufacturers to ensur
Category : Sling Series
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Product Details
Factory Standards for Polyester Lifting Slings
As a core tool in modern industrial lifting, polyester lifting slings must strictly comply with international and industry standards to ensure safety and durability. Below are the key factory requirements:
Material and Manufacturing Standards
- Core Material: High-strength polyester filament (100% PES) is required to guarantee high tensile strength, wear resistance, oxidation resistance, and UV protection.
- Weaving Process: Multi-layer structures (single, double, or quadruple layers) are formed using advanced weaving technology. Seamless looping techniques ensure uniform load distribution and prevent stress concentration.
- Reinforced Stitching: Critical seams and joints undergo reinforced stitching to avoid seam splitting or abrasion during use.
Testing and Certifications
- Mechanical Performance Tests: Mandatory pre-delivery testing includes breaking force, tensile strength, and elastic elongation rate. For example, elongation must be <10% under rated load and <3% under the working load limit (WLL).
- Compliance: Products must meet JB/T 8521.1-2007 (China) or EN1492-1/A1:2008 (Europe) standards and obtain third-party certifications from authorized agencies (e.g., National Steel Inspection Center).
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