Underhængt luftkran med komplette landingsbaner bruges hovedsageligt til transport af materialer i indendørs maskineri fremstillings- og forarbejdningsværksteder, montageværksteder, lagre, materialegårde, til løft af fast vedligeholdelsesudstyr såsom kraftværker og andre lejligheder. De kan også bruges i metallurgi og støbeværksteder som hjælpeløfteudstyr. Desuden er den ikke egnet til brændbare, eksplosive, brændbare gas-, støv- og ætsende gasmiljøer. Det er dog ikke egnet til miljø med nukleart stråling og miljø med giftig gas.

Underhung cranes are lifting equipment that are placed horizontally over workshops, warehouses and stockyards for lifting materials. Because the two ends of the bridge's underhung cranes are located on tall cement columns or metal supports, and are shaped like a bridge, they are commonly known as "overhung cranes" and "driving cranes." It is a kind of lifting machinery with wide range of use and large quantity.

After understanding the basic parameters of underhung cranes, we must also understand the metal structure frame structure of the bridge crane in detail. Let’s share it with you. The metal structure of underhung cranes is the skeleton of the crane, on which all mechanical and electrical equipment are distributed. It is the load-bearing structure of the crane and makes the crane form a whole mechanical equipment.