For enclosing fiber optics and cables, installing conduit around existing cable, or repairing sections of damaged conduit. LAPP offers plastic protective conduits for simple cable protection, flexible plastic protective conduits with plastic spiral, and highly flexible plastic protective conduits with. Whether for power lines or modern telecommunications networks – cable conduits from Noris Plastic offer the necessary safety, durability and flexibility for a wide variety of installation methods. CPVC pipes can withstand high temperatures, maintaining stability even in extreme heat. When snapped together, the unique. Available in 3" and 4" diameter sizes.