... .used for electric hoist,LH,QD,MH Model crane 4.manufature The coiling block is divided into ... as electric hoist,trolley,LH ,QD,QZ,MH Model crane.These below are the main features of coiling block ... :◊1.Crane fitting,coiling block◊2.The material is ductile iron or steel◊3.Used by mining fittings◊4 ... of products◊5.This coiling block is suitable for crane hoisting institutions such as electric hoist,it has ...