GYTA cable has good waterproof performance and is suitable for occasions where pipeline laying is the main method, but it can also be laid overhead. GYTZA53-14~18Xn Optic Cable is Flame-retardant Double Armored Stranded Loose Tube Optical Cable Applied for pipeline, overhead, direct burial GYTZA53 optical fiber loose tube layer stranded type, key protection of optical fiber, full-section water-blocking structure, double-sided coated aluminum. Due to their high tensile and compressive strength, they can be laid directly underneath in relatively mild working conditions. Of course, they still need to be laid through pipes if they are faced with a relatively harsh working environment. The starting point of this structural design is to. About YRTFIBER:As one of the professional manufacturers of fiber optic products, YRTfiber focus on producing differenttypes indoor and outdoor fiber optic cable, fiber optic patch cords, FTTH drop cable, fiber optic conne-ctors, PLC splitter and other passive fiber optic accessories! The factory. The Fiber Optic Association, Inc. (FOA) was founded in 1995 to help develop the workforce to build the fiber optic networks to support a rapid expansion in communications and the Internet. It conforms to the concept of design of central tube cable, which is also known as loose tube cable. Fiber Type: GYXTW Application: Overhead. Underground cables are pulled in conduit that is buried underground, usually 1-1.