Gantry crane in the yard and no suitable plant corbels supporting the occasion, into the form of semi- gantry cranes and gantry cranes, the largest tonnage up to 300 tons. Gantry crane for easy maintenance , high 50 ton Electric Chain Hoist reliability and security , easy installation, no need to change the structure of the plant , to meet the logistics and transportation needs. Gantry cranes up 300 tons 1 , lifting the weight of a large , low headroom , wheel pressure is small, smooth operation 2 , positioning fast, comfortable ergonomic design, operation 3 , after rigorous testing, long life , low maintenance 4 , safe and reliable, improve productivity and create more revenue 5 , European design , plant more beautiful, more comfortable operation workers 6 , without changing the structure of the plant to meet the logistics needs