... structure 3,Good fastening function 4,ISO 5,Aluminum alloy Strain Clamp(bolt type) NLL / cable clamp /pole line hardware is used ... or ground wire onto the insulator strings on the strain and terminal pole towers,playing the function of anchoring. ... insulators,suspension clamp,strain clamp,link fittings,fixing fittings,ground clamp ,transformers,safety helmet and so on. Strain Clamp(bolt type) NLL / ...