PROTECTIVE PIPE FOR INSTALLING COMMUNICATION CABLE INTO EXISTING PIPE LINE

摘要

PROBLEM TO BE SOLVED: To provide a protective pipe for a communication cable for laying a communication cable into an installation pipe and a main pipe in a sewerage pipe line. SOLUTION: This slender and flexible protective pipe for a communication cable includes a spiral line on the outer periphery of the communication cable and prevents the communication cable from being bent in laying the communication cable into the installation pipe and the main pipe in the sewerage pipe line.