This series of product are specially designed for lifting and transporting medium and thick steel plate and the magnetic circuit design is unique,It is suitable for medium-thickness plate factory,ship building factory,and machinery manufactory factory.The user can choose single piece series(type300),several pieces series (type350)or many pieces series(type400) according to your own requirement.Several pieces series and many pieces can adopt magnet regulating control method,which can lift oone piece or certain piece of steel plate and unloading materials with single piece.As bending and deforming may affect safe transportation when lifting long steel plate,please use the combination of several electromagnets.As to long medium-thickness steel plate (6mm-32mm),the space length of electromagnets usually adopt3-4m,the space length of extension pa's rts of both ends is equalor smaller than half of the space length.As the steel plate's bend and deformation as operating will affect the safe transportation,so when you selecting,you should attention the maximum transporting width's parameters of the magnet 's length and steel plate's thinckness,especially as you attacting and lifting several steel plates.