Boom crane: its technical performance and technical parameters are very suitable for specific engineering needs. With large lifting capacity, it can realize load luffing, small tail turning radius, and low interference, it solves the interference problems during tower group operation and narrow space operation, and is the preferred equipment for construction of many super high-rise buildings. QTD6090-32, QTD6055-24/32, QTD6040-18/24, D6032-18, D6025-18, D5531, D5520, D5030, D5020, D4520, D4515, D4015, D3520, D3020, etc.