Qingdao Haosail Machinery Co., Ltd.

A342 forged alloy main ring is usually made of quenched and tempered alloy steel. This material makes it have high strength and good toughness, can withstand large loads, and has certain fatigue resistance and impact resistance, meeting the requirements of lifting operations.

Yes, they are individually proof tested using special fixtures to prevent local point loading. Some sizes are also 100% Magnetic Particle Inspection (MPI) and impact tested and relevant test certificates are available upon request.

It is a reliable tool for connecting hooks, shackles and slings in lifting operations. It is widely used in scenes that require lifting and hoisting, such as construction, mining, shipbuilding, factory manufacturing, etc. It can be used to connect various lifting equipment and rigging to achieve safe lifting and handling of heavy objects.

When using, the main ring should be prevented from being deformed more than 10 degrees. If cracks appear on the surface or the ring body is worn more than 10%, it should be stopped. At the same time, during the lifting process, personnel should not stand under the lifting machinery and slings to ensure safety.