Double girder overhead cranes are built for large material handling with capacities of more than 20 tonnes. So, they are also known as heavy duty overhead cranes. Double girder overhead cranes can be configured with a variety of top-running crane configurations, such as a hoist trolley and an open winch, and can be equipped with a variety of overhead crane attachments and below-the-hook lifting devices, such as grabs, tongs, magnets, spreader beams, C hook, or other process lifting devices for handling heavy loads, with features such as high safety, reliability, and durability.