
Direct Bury Metal Free Microduct
The Direct Bury Metal Free microduct assemblies consist of a number of microducts with an inner low friction surface. The duct assemblies are bundled with a single or dual HDPE sheath depending on configuration. The design makes the ducts suitable for installation directly into the ground.


Overview:
Direct Bury Metal Free “DBMF” 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 two layers 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.
Duct is designed for high crush resistance from external pressure. The thin inner tube wall can make it easy to bend or fix inside of cabinet/closure. The extra layer (total 2 layers of the outer sheath) is added to protect the thin wall of inner tube from external ground pressure. Flexibility of tube allows bending or fixing inside of cabinet/closure. It is strong against lightning, electrical surge.
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 unit 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.


Enhanced Silicone Liner for low friction
Various configurations with different size between 5/3.5mm and 12/10mm
Wide range of number of inner tubes from 1 way to 24+1 way
Ribbed & Smooth Type
Rip cords
Insulated Locatable copper wire
Material HDPE Inner tube and Outer sheath
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[°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
Microduct Configuration:



