Double suspension refers to the use of two sets of suspension clamps at each attachment point along the transmission line towers. This configuration provides enhanced stability and reduces the strain on the OPGW cable. Available with single or double suspensions. 1 Fiber Optic Cable Hardware Fiber Optic Cable Hardware © 2002, AFL, all rights reserved. AFL's Mechanical Suspension installs easily while supporting vertical, transverse, longitudinal unbalanced loads and angle pulls without. Optical ground wire (OPGW) is a type of cable used in the utility industry, primarily for communication purposes. OPGW is typically installed on high-voltage. The FIBERLIGN Suspension uses a combination of structural reinforcing rods (SRR), outer rods, housing halves, and resilient inserts to reduce compression, clamping, and bending stresses on OPGW and the optical fibers within it. The clamp has excellent fatigue resistance, mainly for the large height differences, span more than 800 meters or. We manufacture a wide range of hardware fittings for OPGW Optical Ground Wire, including Suspension and Tension Assemblies, Down Lead clamps, Earthing Clamps, Splice Enclosure, Reinforcing Rods, Vibration Dampers, etc.