Semi gantry crane The large welded structures such as trolley, cable drum, bogie frame etc, through gas annealing furnace annealing treatment to guarantee product after-welding precision, Henan MIne Crane CO .,LTD has car-gas annealing furnace, net size inside the furnace is 10000mmx4000mmx4000mm car-gas annealing furnace, can meet all kinds of small medium and large welded structure stress relief annealing after welding on the crane such as trolley, cable drum, bogie frame, balance beam, spreader.                                           According to the clients’ demands, the crane can be add our company patent-electric anti-sway, this is the world's leading technology, first to achieve lean management, lean production in crane field, and promote the further improvement of product quality.