The optical GYTA53 cable is the armored fiber optic cable of the steel tape for direct burial. The GYTA53 fiber cable consists of a loose tube that twists around the central resistance element. And fiber cable GYTA53 has inner PE sheath, corrugated longitudinal steel tape reinforcement and PE outer sheath. In addition, its inner LAP sheath is longitudinally moisture-proof, so the GYTA53 cable has excellent adaptability to the environment and a mechanical behavior.