a fiberglass duct rodder
Wiki & Tutorial

What is the Fiberglass Duct Rodder?

The fiberglass duct rodders are also known as duct snakes, fiberglass snakes, cable feeding snakes, fiberglass trace rods, and fiberglass duct rods, used for feeding or hauling ropes into duct/conduit / PVC pipe or through walls for the installation of power or communication cables. A fiberglass duct rodder comprises a core rod and an outer reinforcement layer. Typically, the rod is made of alkali-free fiberglass by the pultrusion process, which features strong toughness, considerable pulling force, break-resistant, and aging resistance. In contrast, the outer layer consists of highly durable, scratch-resistant polyethylene, which can protect the core from mechanical damage.

The duct rodder with metal wire in fiberglass rod is also available. This duct rodder is also called traceable duct rodder or detectable duct rodder. With a piece of copper wire or steel wire, the duct rodder can be traceable easily in pipes. After producing the fiberglass rod, a detachable copper head on two sides of the rod will be installed, which will draw the rope into a line or conduit.

A Fiberglass Duct Rodder
A Fiberglass Duct Rodder

Some fiberglass duct rodders feature an aluminum cage and stand for lightweight handling in the field. The cage size is determined by the fiberglass rod’s length and diameter, usually supplied as a frame, case, or housing with a length of coiled fiberglass/nylon/spring steel/stainless steel on a rotating inner cage for easy coiling and uncoiling. Most larger, more extended fiberglass units feature a tracer wire.

Accessories of the Fiberglass Duct Rodder
Accessories of the Fiberglass Duct Rodder


A fiberglass duct rodder is an ideal tool for underground jobs such as pulling cables and lines through conduits, tubes, pipes, or ducts. Due to its high-tensile strength, wear-resistant surface, and elastic body, it is widely used in telecommunication, electric power, water conservancy, etc.


  • Non-conductive, rust and corrosion-resistant, superior pulling strength
  • Sturdy and durable
  • Good compression resistance capacity and proper structure
  • No easy to break and aging resistance
  • Outstanding tensile strength and substantial bending property
  • Equip with bracket and easy to carry
  • It is convenient and straightforward to maintain


Accessories include a drawing head, swivel connector, mini harness, roller guide, repair kit, flexible guide tip, etc.

Accessories of the Fiberglass Duct Rodder
Accessories of the Fiberglass Duct Rodder

How to use a Fiberglass Duct Rodder

Accessories can be screwed onto the frame of the duct rodder. Accessory and repair kit is available with a canvas bag attached to the cage of the duct rodder. It is perfect for keeping all the accessories safe and ensures versatility to handle any problem at the job site.

How to use a Fiberglass Duct Rodder
How to use a Fiberglass Duct Rodder


  • Fiberglass rod inner: Extruded process made of E-fiberglass and high-quality resin at high temperature.
  • Fiberglass rod outer: developed polymer
  • Assembly: metal frame powder coated; Rubber wheels assembly for easy transportation; Guide rollers for rotary coupling; Parking brake for the flexible rod control.
  • Copper wire inside is optional for tracing easily or other professional usages.
  • The rolling bearing cage for mobility is solid and easy to use.
  • The feed device allows the rod in and out smoothly
  • Rustproof bull-nose pulling tips with various accessories.
The structure of a fiberglass duct rodder
The structure of a fiberglass duct rodder

Specifications & technical parameters

Below, we list the standard fiberglass duct rodder specifications, just FYI.

Glass Fiber Rod Diameter (MM)The length of the Range (M)Overall Dimensions (M)  Weight (KG)

Technical data

Technical Data of Fiberglass Duct Rodder


Rod Diameter (mm)

Φ4, Φ5, Φ6, Φ8, Φ10, Φ11, Φ12, Φ13, Φ14, Φ15, Φ16

Rod Length (m)


Frame Spec. (mm)

1300x450x1330, 1200x420x1220, 980x350x1000, 680x240x700, 420x180x400


Fiberglass rod inner,

Extruded by fiberglass and high strength resin at high temperature

Fiberglass rod outer

High-Density polyethylene coating

Metal Frame

Steel with high-temperature sprayed plastic or hot dip galvanized

Physical Property

Fiberglass content



> 1.9gr/cm3

Working environment

-40° C to +80° C

Minimum Pulling strength

4000N +/-5%

Consistency of rod


Flexural Modulus

> 46.500Mpa

Elongation at break


Min Bending Radius


Packaging & shipping

Packaging & shipping of fiberglass duct rodders
Packaging & shipping of fiberglass duct rodders

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