... link fitting to tower arms or substation structure NLD Bolted Tension Clamp(malleable cast iron):1) be used to fix conductor and ... , the conductor can be entangled by aluminum taps or armour rods for protecting, and the out diameter includes the taps or ... rods.3)Material:Body,Keeper-malleable iron,Split Pin-stainless steel,Others-steel,hot-dip galvanized. Tension clamp(malleable iron)