Apparently, these types of products are quite similar to cranes and other lifting equipment

There are normally two handlers in order to lock girders and these are called girder handlers. Beam clamp is used where there is a need for an overhead crane to be attached to a girder in fixed length. Now this is called fixed rail

Adjusting screw (facilities) are engineered to adjust the handlers over the girder and is designed in accordance to the crane capacity. Beam clamp could be used in different types of girders such as: verticals, horizontals, turn overs (90˚). This product is in the range of 100kg to 15MT