... -hole pipe is a new kind protective tube for fiber-optic cables. It is always called Plum Blossom Pipe because ... and usability.It can be used to protect power cable, Fiber Optic, coaxial, PCM electric cable and so on, widely apply ... for wide temperature range(+80centigrade_40centigrade),which has the characteristics of low temperature elasticity, good compressive strength, impact resistance anti-aging ...