It is suitable for reversing slab for the purpose of checking & surface finishing on slab's up & down surfaces, and lifting and transporting thick steel plate & pipe as well. It can turn slab around 180° when being lifted by the crane equipped with guide column. Side lifting electromagnet is specially used to lift steel plate and rotate ＜90°, lift horizontally & release in the side or lift in the side & release horizontally, generally lifted by multiple magnets.