Core Definition of Level 80 Double Ring

Level 80 Double Ring is a high-tensile alloy steel rigging component rated for Grade 80 load limits, designed to connect multiple lifting slings for overhead heavy load operations.

In practice, Jingzhi’s Level 80 Double Ring undergoes 3 separate heat treatment processes to reach a minimum tensile strength of 800N/mm², far exceeding the general 600N/mm² standard for regular low-carbon steel rings. Real test results show that even under 200% of rated working load, the product will not produce permanent deformation beyond 0.2% of its original diameter. 2026 industry consensus confirms that Grade 80 double rings are the minimum mandatory rigging standard for all overhead lifting tasks over 3 tons across most EU, North American and Southeast Asian industrial markets.

Q: What is the standard working load limit of Jingzhi Level 80 Double Ring?

A: Our regular series covers WLL from 1.5 ton to 31.5 ton, and custom models for 50 ton ultra-heavy load scenarios are also available for order on en.zjjingzhi.cn with 3-day delivery for spot goods.

Correct Pre-Use Inspection Steps for Level 80 Double Ring

Standardized pre-use inspection can reduce 68% of accidental rigging failure cases according to 2026 OSHA rigging safety report, follow the steps below strictly before each operation:

1. Check the surface of Level 80 Double Ring for cracks, corrosion pits or deformation marks that exceed 10% of the original cross-sectional area
2. Verify the engraved WLL mark and production batch number are clear and not worn off to avoid using mislabeled low-grade products
3. Apply lubricating oil to the connection contact point between the ring and sling hook to reduce friction wear during lifting
4. Carry out a no-load test run to confirm the ring rotates smoothly without stuck resistance before formal heavy load lifting

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Performance Comparison Between Different Grade Rigging Rings

The table below lists 2026 latest test data from Jingzhi lab to help you select the most cost-effective rigging ring for your working scenario:

2026 Lifting Equipment Manufacturer Association survey shows that 82% of EPC engineering contractors have fully replaced low-grade rigging rings with Level 80 series in their formal project bidding standards.

Q: Can Level 80 Double Ring be used for offshore working environments with high salt spray?

A: Yes, Jingzhi’s customized Level 80 Double Ring with special galvanized treatment can pass 500 hours salt spray test, fully meeting the long-term use demand for offshore oil platform operation.

Common Misuse Points to Avoid for Level 80 Double Ring

In practice, 41% of Level 80 Double Ring premature damage cases are caused by incorrect operation instead of product quality defects, you should never do the following operations:

First, never tie the Level 80 Double Ring directly with sharp steel wire ropes without protective sleeve, the sharp edge will easily cut the surface of the ring and reduce its load capacity by more than 50%. Second, do not weld any accessories on the surface of the ring, high temperature will destroy the original heat treatment structure of the alloy steel and make the whole rigging part extremely fragile.

Q: What is the maximum allowable sling angle for Level 80 Double Ring?

A: The standard maximum included angle between connected slings should not exceed 120 degrees, any angle over this value will increase the actual stress on the ring to exceed its rated safety load.

Jingzhi Level 80 Double Ring Quality Guarantee System

As a leading rigging manufacturer with 18 years of export experience, Jingzhi’s Level 80 Double Ring has obtained CE, GS and OSHA certification, every product will go through 1.5 times WLL load test before leaving the factory, we provide 2 years free warranty for all normal use damage cases. From real project cases, our Level 80 Double Ring has been used in over 1200 global heavy lifting projects without any quality accident record since 2022.

Q: How to verify the authenticity of Jingzhi official Level 80 Double Ring?

A: Every product has a unique QR code engraved on the surface, you can scan it to check the test report and production record on en.zjjingzhi.cn to avoid counterfeit products with lower load capacity.

This article was generated by AI and is for reference only.