... OPGW cableOptical Fiber Composite Ground Wire(OPGW)1.Central Stainless Tube Typea.Small cable diameter,light weight,low additional ... mechanic performance by adjusting AA/SS Combination3.Central Sealed Al-Covered Stainless Tube Typea.Extremely good corrosion resistanceb.Improved ... design,fully using cross-sectiond. Available for central structure,Single or multi layer stranding wires application