Overview: Primary TWD “Thick Walled” Microduct assemblies consist of one tube with a smooth or ribbed inner surface that enables an air blown installation of micro cables. 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. Primary TWD Microduct is designed for direct burial by having thicker inner tube. It has advantage for easy and fast termination with thick sheath. The thickness of the tube allows 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 tight protected duct assemblies consist of a one tube microducts with an inner low friction, antistatic surface that enables installation of air blown fibers cables. The duct assemblies are HDPE sheath depending on configuration. The design makes the ducts suitable for installation directly into the ground. Operation Features: Each microduct has an outer/inner diameter of 20/16 mm. These are suitable for installation of air blown fibers. • For direct burial • One over-sheathed ducts • 20/16 mm microducts • Low friction inner surface for maximum installation lengths • Excellent environmental properties • silicone coated inner tube • Material HDPE tube 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 microducts are numbered and also identified by their color.