OKKM optical communication cable

For laying in cable ducts, block pipes, collectors, tunnels, on bridges and in mines. Cable with central power element made of fibreglass rod or steel cable or steel wire in polyethylene sheath (or without it) around which optical modules (OM) and filling cordels or filling modules (or only OM) are twisted, inner sheath made of polyethylene (or without it), overlaid with water-blocking material, armour coating made of steel corrugated tape, outer sheath made of polyethylene. It is allowed to make cable sheath from polyethylene, which does not spread burning at single or group laying and does not emit corrosive gaseous products at burning and smouldering, with reduced smoke and gas emission.