[Purpose] : The electromagnet uses a unique two-wire wrapped magnetic circuit structure, with good heat dissipation, magnetic penetration depth, can penetrate the characteristics of multi-layer air gap, can be hoisted without bundling or only simple bundling bar, flat iron, Angle steel and so on. It can improve the large deflection of small round steel, rebar and other profiles. There are room temperature type and high temperature type. Due to the use of two or more joint cranes, so its connection with the hanging beam mainly adopts two lifting points or four lifting points structure, the sample is listed in the two lifting points structure, please specify the specific requirements of the connection with the hanging beam. The shell is not impact-resistant during hoisting and cannot be used as a neat material.