Integrated nine-hole structure allows multi-cables laying at the same time, improves efficiency and saves space. Corrosion resistant, anti-aging, long service life underground. This document discusses techniques for trenching and laying optical fiber ducts. It also discusses using additional protective pipes like RCC or GI pipes over the HDPE ducts in. Made of high quality PVC material, high strength, good toughness, compression and impact resistant. Smooth inner wall. This specification covers the minimum requirements for the laying, joining and testing of HDPE (High Density Polyethylene) Duct for Optical Fibre Cable (OFC) either by open cut methods or by trenchless techniques. Most communications conduits can be fitted with three or four sub-ducts. Sub-ducts are often referred to as innerducts. An innerduct provides a. PVC nine-hole optical cable protection pipe is a high-efficiency solution designed for organized and secure protection of multiple optical cables in telecommunication, data center, and smart city infrastructure.
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