Demag Cranes & Components [India] Private Limited offers Lug Type Rope Socket. Demag Cranes & Components [India] Private Limited is an ISO 9001 certified company. The Lug Type Rope Socket is used for securing rope ends to fixed structures or for connecting rope ends, for example stay ropes of tower, mobile and slewing cranes. This is also used for rope diameters ranging from 10 to 48 mm.