G80 chain sling: core equipment in the field of high-strength lifting
As one of the key equipment in the field of modern industrial lifting, G80 chain slings are widely used in construction, mining, shipping, logistics and other industries due to their high strength, wear resistance and resistance to extreme environments.
- Materials and processes: exquisite combination of alloy steel and heat treatment
The core material of G80 chain sling is high-quality alloy steel 20Mn2 or 25MnV, which is formed into high-strength chain links through precision forging process. Its manufacturing follows international standards such as ISO 3076 and EN 818-2, and adopts multiple heat treatment processes such as quenching, tempering and nitriding. The quenching process can significantly improve the surface hardness and wear resistance, so that the chain breaking strength reaches more than 800MPa; tempering enhances toughness by eliminating internal stress and ensures the stability of the chain under dynamic load. In addition, surface treatment technologies such as blackening, galvanizing or spraying further improve the corrosion resistance and extend the service life.
- Performance advantages: reliable guarantee for extreme working conditions
①. High strength and safety factor
The strength grade of G80 chain is 80, with a minimum safety factor of 4 times, and a rated load range of 1.1 tons to tens of tons (such as 8mm diameter chain breaking load of 80.6kN). Compared with ordinary chains, its load-bearing capacity under the same diameter is increased by 25%, and the elongation at break is not less than 20%, which effectively avoids the risk of sudden breakage.
②. Temperature resistance and corrosion resistance
G80 chain can maintain 99% of the rated load capacity in the range of -40℃ to 200℃, and still maintain 75% of the strength at 300℃. The performance decay is slow at extreme temperatures, which is significantly better than ordinary steel. Through galvanizing or boronizing treatment, the chain can be used for a
