Overview: Thick Walled Microduct “TWD” Assemblies consist of tubes with a smooth or ribbed inner surface that enables an air blown installation of micro cables. The micro ducts are sheathed with one layer without moisture barrier. It provides excellent protection from the physical environment withstanding significant amount of pressure by pulling, and it is easy to branch off for network expansion. Thick Walled Microduct is designed for direct burial by having thicker inner tube. It has advantage for easy and fast termination with thin outer sheath. The thickness of each inner tube allows individual tubes to be used direct buried solution. This item is suitable for any construction sites such as open cut, Micro trenching and Mini trenching. This product is usually recommended to the site which requires fast and easy sheath cutting during fiber branch off. Application: The thick walled microduct bundles consist of a number of microducts with an inner low friction surface that enables installation of air-blown fiber unit cables. The thick inner wall of the microducts allow for installation directly into the ground without the need for additional protection. Operation Features: The duct assemblies are available in several versions with 1 to 24 and 24+1 microducts. Each microduct has an outer/inner diameter of 7/3.5 mm. These are suitable for installation of air blown fibers. The center duct of 24+1-way assemblies is 10/8 resp. 12/10 mm and can be used for blowing in a micro cable. • For direct burial • 1, 2, 4,5, 6, 7, 12, 14, 19, 24 or 24+1 over-sheathed ducts • 7/3.5 mm microducts • Low friction inner surface for maximum installation lengths • Excellent environmental properties • silicone coated inner tube • Material HDPE Inner tube and Outer sheath • Maximum Air Pressure (Blowing) 15bar Temperature Performance: Storage and Transportation [°C]: -40 to +60 Installation [°C]: -20 to +50 Operation [°C]: -40 to +60 Mechanical Performance Test compliance: Tensile Performance: IEC 60794-1-21 Method E1 Bend: IEC 60794-1-21 Method E11 Kink: IEC 60794-1-21 Method E1 Impact: IEC 60794-1-21 Method E4 Crush: IEC 60794-1-21 Method E3 Inner Clearance: IEC 60794-5-20 Ann.E Marking: Duct assemblies have markings showing the tube length. The individual microducts are numbered and also identified by their color and position in the bundle.