... electric hoist,LH,QD,MH Model crane 4.manufature The coiling block is divided into two kinds:forged iron and steel ... crane.These below are the main features of coiling block:◊1.Crane fitting,coiling block◊2.The material is ductile iron or ... special engineers to inspect the quality of products◊5.This coiling block is suitable for crane hoisting institutions such as electric ...