What type of sheath does the optical cable model gytxw represent
The meaning of the letters, GY stands for outdoor (field) optical cable, X refers to the central bundle tube structure of the cable, T stands for the filled structure, W stands for the polyethylene outer sheath with steel wire entrained. It conforms to the concept of design of central tube cable, which is also known as loose tube cable. Water blocking material is added between the steel tape and the loose tube to ensure the compactness and longitudinal water blocking of the optical cable.
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