1. The hanging ring and connecting plate are made of high strength and high quality alloy steel die forging, and the bolts are metric threads after strict heat treatment process, reaching the 12.9 hexagon alloy horn head bolts in IS04762 standard.

2, the verification load is 2.5 times the working load limit.

3. Sampling for fatigue detection: carry out 20,000 fatigue tests with 1.5 times the ultimate force of the working load.

4, product 100% magnetic particle inspection.

5, side pull ring use Angle: 0 '-90