Foundry cranes are purpose - built to handle the demanding tasks of transporting molten metal and heavy loads in foundries. The two - girder and two - rail configuration, along with the four - girder and four - rail setup, are predominantly deployed for middle and large - tonnage foundry operations. These designs offer enhanced stability and load - bearing capacity, ensuring the safe movement of substantial weights such as large crucibles filled with molten metal.

For extra large - tonnage applications, the four - girder and six - rail design paired with two trolleys comes into play. This setup distributes the weight more evenly, enabling the crane to handle extremely heavy loads. The dual - trolley system also provides greater flexibility, allowing for more complex lifting and positioning operations. Together, these configurations meet the diverse needs of foundries, optimizing productivity while maintaining the highest safety standards.