The GR80 chain, often referred to as a Grade 80 alloy chain, is globally recognized as the standard for overhead lifting. Its strength, durability, and compliance with international testing protocols make it the backbone of rigging systems across construction, mining, ports, and manufacturing. Understanding how GR80 chains align with regulations ensures both safety and efficiency in every lift.

What Defines a GR80 Chain?

A GR80 chain is manufactured from quenched and tempered alloy steel. Each link undergoes proof testing and inspection under recognized standards. The designation “Grade 80” signals that the chain is certified for overhead lifting applications, unlike commercial chains that lack structural guarantees.

Core identifiers of GR80 chains include:

Stamped grade mark (“8” or “80”) on each link

Traceable batch ID

Working Load Limit (WLL) certified by manufacturer

Compatibility with G80 components like hooks, master links, and connectors

International Standards Governing GR80 Chains

GR80 chains are not just strong—they are regulated by specific international standards to guarantee consistent performance.

These frameworks ensure that GR80 chains used in chain slings and rigging assemblies maintain global interoperability and safety compliance.

Applications of GR80 Chains

Construction: lifting beams, prefabricated concrete, structural steel

Mining: scraper conveyor chains, round link mining chains (DIN 22252)

Marine and Ports: mooring equipment, anchor handling, cargo rigging

Manufacturing: machine part handling, mold lifting, workshop hoists

Inspection and Compliance Practices

Even a certified GR80 chain requires routine verification to stay safe. Operators follow strict inspection and retirement criteria:

Wear: retire when average diameter reduces ≥10%

Elongation: remove if pitch lengthens ≥3%

Hook compatibility: ensure throat clearance ≥10% of load point

Surface condition: reject for cracks, corrosion pits, weld spatter, or heat discoloration

Regular inspections align with ISO 7593 guidelines and national occupational safety rules.

GR80 Chain Compared to G100 Chain

While GR80 chains dominate standard lifting tasks, G100 chains are increasingly used where lighter weight and higher capacity are necessary. The table below highlights their main differences:

This comparison shows that GR80 chains remain the cost-effective, versatile choice, while G100 chains offer weight reduction and efficiency where conditions demand it.

https://www.lifting-chain.com/grade-80-series/

Conclusion

The GR80 chain stands as the foundation of certified lifting practice because it merges strength with strict compliance. From construction to mining, its global standardization guarantees safety and reliability. Choosing GR80 chains from certified suppliers ensures every lift meets both performance and regulatory expectations. For proven quality, always source your GR80 chains from TOPONE CHAIN.