Plate clamps are intended, as the word itself indicates, to lift plates or large flat loads. They are available in many versions so that there is always a solution for lifting a load safely.
For example, there are special plate clamps that do not damage the load (eg for lifting stainless steel). Many plate clamps require a minimum thickness of the material to be lifted for the clamp to work correctly. The closer the weight of the load is to the workload of the clamp, the better its operation. It is worth reading the user manual. It is also important to regularly check all lifting equipment, including a plate clamp, for damage or wear.