Customizable HDPE Silicone Core Pipe 32/26 40/33mm Low Friction Conduit for Highway Optical Cable Blowing Construction Wholesale. Silicon Core Lubrication: Integrated solid lubricant ensures ultra-low friction for easy cable blowing. High Pressure Resistance: Withstands internal air pressure up to 8 bars during cable installation. Flexible Design: Small bending radius of 10 times outer diameter allows free adaptation to terrain. Durable Material: Made from HDPE with silicon core, offering high tensile strength and elongation. Multiple Color Options: Available in White, Red, Green, Blue, or fully customized colors. CE & ISO Certified: Meets ISO9001, CE, and GB/T 24456-2009 standards for safety and quality. OEM/ODM Services: Customizable LOGO, packaging, and product designs available upon request.