MH type single box beam gantry crane with hookis a small type crane for lifting small tonnage goods. It has steel-pip leg so its surface facing wind is very small. And it is applicable for the workshops outside and inside and windy area. Single girder gantry crane can lift goods of 0.5ton-32ton by under-beam traveling hoist, and travel through and across the workshop. It includes 1 main beam, 4 legs, 2 ground beams, one or two hoist and accessories. The total length of suspending outside should be no more than 1/3 of the span. Lifting distance limiter, traveling distance limiter and weight limiter will be provided with the crane for safe traveling and lifting. Spare parts for two years will be provided in order to work normally for a long time. Ambient temperature should be no more than 50 oC. Controlled by push button, remote or cabin with VVVF. Forbidden to use in easily combustible, explosive, corrosive, electromagnetic, electric hoist, melting metal, overloading and dust works.