Forged from high-strength and high toughness special alloy steel, subjected to heat treatment.
Used in conjunction with EN818-2 standard grade 80 chain.
Conduct verification tests one by one at 2.5 times the working tension.
Sample 20000 fatigue tests.
Conduct strict sampling and fracture testing for each batch of products, as well as magnetic particle testing
All pins are tested to ensure the same hardness quality.
Surface treatment: spray molding