What Exactly Is Level 80 Double Ring?

Level 80 Double Ring refers to 80-grade high-tensile alloy steel rigging part for multi-leg lifting connection. In practical on-site use, it acts as the core link between lifting hooks and multiple sling sets, distributing load evenly across each leg to avoid unbalanced force damage. From real project cases, correctly matched Level 80 Double Ring can reduce overall rigging failure rate by 32% for heavy lifting tasks.

Core Structural Features

Jingzhi Level 80 Double Ring adopts one-piece forging process without any welding seam at force-bearing points, which eliminates hidden crack risks that commonly exist in assembled double rings on the market. 2026 performance test data shows its forging density reaches 99.7% with no internal defects detected via ultrasonic scanning.

Standard Specification Range

The full product line covers rated working load from 2T to 50T, with matching sizes for 2-leg, 3-leg and 4-leg lifting sling assemblies, all marked with permanent laser engraving of grade, load capacity and traceable serial number for easy safety inspection.

Performance Comparison of Different Grade Double Rings

It is a common misunderstanding that all double rings with the same outer size share identical load performance. The following table lists verified 2026 test data from Jingzhi R&D center for your reference:

The industry consensus confirmed by 2026 Lifting Equipment Safety Association report is that Level 80 double rings have become the mainstream choice for heavy duty lifting projects over 5T load requirement, as it balances load capacity and long-term cost efficiency.

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Step-by-step Installation & Pre-use Inspection Guide

Correct installation is the core premise to give full play to Level 80 Double Ring's performance, improper operation will lead to 60% of unexpected rigging accidents according to field accident statistics.

1. Check the laser marking on the Level 80 Double Ring first, confirm its rated working load matches the total lifting load of your project, no crack or deformation is found on the surface before installation
2. Connect the upper opening of the double ring to the main lifting hook, make sure the safety latch of the hook is fully closed and no extra friction exists between ring and hook edge
3. Insert each sling shackle into the two lower openings of the double ring one by one, do not pile multiple shackles in one single opening
4. Conduct no-load test lifting for 10-15cm height, check if the Level 80 Double Ring rotates smoothly and load distributes evenly across contact points

Q: What is the maximum working temperature for standard Level 80 Double Ring?

Under normal circumstance, the safe working temperature range for Jingzhi Level 80 Double Ring is from -40℃ to 200℃, long term working environment over 200℃ will reduce its rated load capacity by 25%.

Q: Can I modify the Level 80 Double Ring by drilling or welding to fit special connection?

Absolutely not. Any post-processing modification on the forged Level 80 Double Ring will completely damage its internal structural strength, and void all safety certification of the product.

Main Application Scenarios of Level 80 Double Ring

Level 80 Double Ring is widely adopted in multiple high-risk industrial fields that require strict lifting safety standards, Jingzhi's products have been exported to 37 countries and regions for actual operation since 2024.

Offshore Marine Lifting Operations

Practical use data shows that Jingzhi Level 80 Double Ring with enhanced anti-corrosion treatment can work normally in high-salt marine environment for over 3 years without obvious rust, which is 2 times longer than ordinary grade 70 double rings.

Heavy Machinery Assembly Workshop

For large equipment assembly that needs frequent multi-point balance lifting, Level 80 Double Ring can reduce overall rigging weight by 15% compared with lower grade rings under identical load, which improves operation flexibility for workers.

Q: Can Level 80 Double Ring be used for overhead lifting of personnel?

Standard Level 80 Double Ring is not designed for personnel lifting, you need to select special personnel lifting rated rigging parts that meet additional safety factor requirements for this operation.

Daily Maintenance & Retirement Standard

Proper maintenance can extend the service life of Level 80 Double Ring by 40% on the premise of keeping 100% safety performance. In practical service cases, many users ignore minor wear and lead to unexpected failure.

Regular Maintenance Requirements

Clean the surface of Level 80 Double Ring after each heavy duty use, apply anti-rust oil on contact points, store it in dry ventilated environment away from corrosive chemicals, conduct full load inspection every 12 months for units working over 100 times per month.

Mandatory Retirement Standards

When you find any of the following situations, the Level 80 Double Ring must be retired immediately: visible crack on any surface point, wear depth over 10% of original body thickness, permanent deformation exceeds 5% of original size, failed load test result.

Q: Is the Level 80 Double Ring from Jingzhi certified by global safety authorities?

All Jingzhi Level 80 Double Ring products get CE, ISO 1837 and ASME B30.26 certification, every unit can provide traceable test report before delivery.

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