Double girder gantry crane legs produce Video 

Continue the 71m length gantry crane production sharing--Guanhui crane ：
Gantry crane have four legs to support it moving on the ground .Special Guanhui this 71m length wide span gantry crane ,must need the stronger legs support it's running ,ensure the crane have good performance and long lifespan ,so strict control the four legs produce quality it too important !
Below Video show you Guanhui how to produce Gantry crane legs .
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