European double ring buckle
Chain double-link
The special alloy steel with high strength and toughness is forged and heat treated
Each piece was tested by 2.5 times the working tension
20 000 fatigue tests were carried out by sampling
Strict sample breakage test for each batch of products
100% magnetic particle inspection
It can be used in combination with EN818-2 standard level 80 chain
Safety factor 4:1
Surface treatment: spraying