The fiber optic cable armored type is divided into spiral steel tape and corrugated steel tape.The spiral steel tape fiber optic cable are spiral wound around the fiber optical cable and are commonly used in indoor or outdoor application for high durability and excellent crush resistance. The corrugated armored fiber optic cable are coated steel tapes folded longitudinally around the cable, often used in outdoor application, for superior mechanical properties. Both types of armored cable can be used in harsh outdoor environment where there is too much dust and even damage caused by rodents.