Model Number: NBB-RT Key Specifications/Special Features: Application:◆Used as loose tube to protect primary coating fibers, light –buffered fibers and fiber ribbons.Features:◆The color of the tube is the natural color, or other contracted color◆Changeable appearance and dimensions meet various requirements of customers◆Meet various requirements of market and clients. Tube Type Tube Specification Outer Diameter
(mm) Weight
(kg/km)




With Strength
Member 0.6mm Coating
Fiber Cable 1.6 2.2 0.6mm Coating
Fiber Cable 1.8 2.6 0.6mm Coating
Fiber Cable 2.0 3.3 0.9mm Coating
Fiber Cable 2.0 3.2 0.9mm Coating
Fiber Cable 3.0 7.7 1.2mm Tight-
buffered Fiber Cable 3.0 7.0 1.5mm Tight-
buffered Fiber Cable 3.0 6.4 Range of temperature(°C) -20~+60°C