4.双面涂塑铝带挡潮,并具有抗侧压作用。 Double coated Aluminium tide, and has lateral pressure. 5.松套管围绕中心加强件SZ层绞。 Loose pieces of casing around the centres of the SZ-cutter. 6.松套管材料本身具有良好的耐水解性能和较高的强度,管内充以特种油膏,对光纤进行了关键性保护。 Cannola material itself has good resistance to hydrolysis performance and high strength and tube filled with special cream, optical fiber were key protection. 7.PE护套具有很好的抗紫外辐射性能。 PE sheathed have very good ultraviolet radiation properties.
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