'smooth inner layer'

4 Way 25mm Multi Duct HDPE PLB Duct Pipe with inner Silicon coated, Sub Duct shall be 4 different color

7 Way 40mm Multi Duct HDPE PLB Duct Pipe with inner Straight ribbed, Sub Duct shall be 7 different color - (Green, Blue, Yellow, Brown, Violet, Grey, Red), thickness of Sub-duct 2.9mm ± 0.3mm and Color of outer heath shall be orange with 1.2mm Thickness

MICRODUCT assemblies are designed with an extra slim PE sheath. The design makes the duct assemblies especially suitable for installation into narrow existing pipes or pipes occupied with cables or other obstacles. The Microducts are optimized for best performance. The duct assemblies are available in three versions with 4, 7 or 24 sub-ducts. Each microduct has an outer/inner diameter of 5/3.5 mm to 18/16 mm. The assemblies comes in different colors for easy identification.