Double girder overhead traveling cranes, it consists of a welded steel manufacturing derived from two box beam on mobile lifting group and undercarriage. from 2 tons up to 50 tons standard, it is preferred as process cranes up to 250 tons from 50 tons. Wide wheelbase and is an effective solution for high lifting capacity. With maintenance platform available in one of the beams is provided ease of maintenance and fault status. In general, the main power supply with busbar system, the hoist is provided with power line c profile or IPN profile line that consists of feston system. crane systems are the most preferred in the industry.