Overview: FLAT “TWD” Microduct 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. FLAT “TWD” 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 tight protected duct assemblies consist of a number of microducts with an inner low friction, antistatic surface that enables installation of air blown fibers cables. The duct assemblies are bundled with HDPE sheath depending on configuration. The design makes the ducts suitable for installation directly into the ground. For micro-trenching with narrow width, FLAT DUCT is the most optimized item. The product itself can be placed vertically to fit on micro-trenching. The size of the product is relatively small which allows better shipping and handling with the smaller reel size. Since Flat Duct has the same thickness of TWD (Thick Walled Microduct), customers can enjoy the same benefits of TWD. Operation Features: The duct assemblies are available in several versions with 2 to 7 microducts. Each microduct has an outer/inner diameter of 7/3.5 mm. These are suitable for installation of air blown fibers. • For direct burial • 2, 3, 4, 5, 6, 7 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.