Modern Malleables Limited supplies Helical Armour Rod. Modern Malleables Limited offers different types of pole line hardware, insulator fittings, and compression fittings. Helical Armour Rod is used to protect conductor against bending, compression, abrasion and arc-over. Helical Armour Rods of specially treated aluminium alloy are used over aluminium based conductors for use on alum weld, copper, copper weld, bronze and galvanised steel cables etc.