What is the outer diameter of the armored four-core cable?

　　The outer diameter of armored four-core fiber optic cables varies depending on the product type, manufacturer, and specific specifications. Here are some common outer diameter specifications for armored four-core fiber optic cables:

　　Certain types of armored four-core fiber optic cable: with an outer diameter of 10.2mm. This type of fiber optic cable is usually used for long-distance communication and inter-office communication, weighs 120kg, and can be laid by overhead or pipeline.

　　Another type of Armored Fiber Optic Cable: the outer diameter is 5.0 ± 0.1mm. The specific structure of this fiber optic cable includes 0.25mm tight-sleeved fiber, stainless steel hose, reinforcement layer, etc., and has specific technical parameters and performance requirements.

　　There are also certain brands or models of armored four-core cables: the outer diameter may reach 27.3mm (this usually refers to the overall size including the outer sheath). However, this size may be more suitable for specific application scenarios or environmental requirements.

　　Other common specifications: The outer diameter of some armored four-core cables may be in the range of φ 0.6 to 5.0mm, depending on the specific design and manufacturing standards of the cable.

　　In summary, the outer diameter of the armored four-core cable is not a fixed value, but varies according to the product type, manufacturer and specific specifications. Therefore, when choosing an armored four-core cable, it is recommended to consider factors such as specific application scenarios, performance requirements and budgets, and consult relevant professionals or manufacturers for accurate information and recommendations.