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8 containers special spreaderThe size and rated lifting weight of spreader shall meet the requirements of GB3220.2. The lock and hook connection mechanism of the mast shall meet the following safety technical requirements:Shall not be cast and manufactured;Forgings generally use GB3077 stipulated 40Cr steel;Each rotating lock (hook) shall be able to bear vertical downward load, not less than 1/2 of the rated lifting weight of the container;8 containers special spreader8 containers special spreaderThe surface should be flat, no wrinkles, acute Angle, burn and other defects, no cracks after inspection.The spreader of the container crane must be connected through the lifting holes of the four top corner components on the top of the container, and the lifting force of the four lifting points s