IMC Conduit

IMC Conduit

Allied Tube & Conduit IMC


Durable Light IMC Steel Conduit

Allied Tube & Conduit IMC is precision manufactured for economical protection and long lasting value for the electrical raceway system. Allied Tube & Conduit IMC is lighter in weight, but as strong as Rigid.

Intermediate Metal Conduit, covered by Article 342 in the National Electrical Code® (NEC), is recognized as an equipment grounding conductor in Article 250 of the NEC and also provides excellent sheilding from electromagnetic fields.

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  • Light-weight ductile steel conduit for long life and easy bending
  • Hot-dip galvanized layer to increase corrosion resistance, and protect against white rust
  • Creates a smooth, continuous raceway for fast wire-pulling
  • U.L. listed and manufactured in accordance with ANSI C80.6.
  • Available in trade sizes 1/2 – 4



Allied Tube & Conduit IMC is lighter in weight but as strong as RIGID, and is recognized for use in the same applications, including all hazardous locations. Allied Tube & Conduit IMC is manufactured from premium, work hardened steel combining electrical and mechanical performance with ductility. Allied Tube & Conduit IMC is resistant to impact and is easy to cut, bend and join for smooth, continuous raceways and fast wire-pulling. Allied Tube & Conduit IMC is hot galvanized using Allied Tube & Conduit’s patented in-line Flo-Coat® process. This process combines zinc, a conversion coating, and a clear organic polymer top-coat to form a triple layer of protection against corrosion and abrasion. The interior of Allied Tube & Conduit IMC is coated with a highly corrosion- resistant lubricating finish for easier wire-pulling. No need to worry about damage to the conduit system even when pulling through multiple 90° bends.


Allied Tube & Conduit IMC has a larger internal diameter than RIGID conduit to allow for easier fishing and wire-pulling. Allied Tube & Conduit IMC is also more “rigid” than RIGID to provide superior wiring protection in many applications. The National Electrical Code recognizes Allied Tube & Conduit IMC for the same uses as RIGID, including all hazardous (classified) applications.

Allied Tube & Conduit IMC uses the same threaded couplings and fittings as RIGID conduit, and the 3/4″ NPT threads (ANSI B1.20.1) are also full cut and galvanized after cutting. Color-coded end-cap thread protectors keep the threads clean and sharp, and also help to provide instant trade size recognition. Even sizes are color-coded orange, 1/2 trade sizes are yellow, and 1/4 trade sizes are green.


Allied Tube & Conduit IMC greatly reduces electromagnetic fields, effectively shielding computers and sensitive electronic equipment from the electromagnetic interference caused by power distribution systems. Allied Tube & Conduit EMT is very effective in reducing electromagnetic field levels for encased power distribution circuits, shielding computers and other sensitive electronic equipment from the effects of electromagnetic interference. Visit to obtain the GEMI (Grounding and Electromagnetic Interference) software analysis program.


Allied Tube & Conduit IMC is listed to Underwriters Laboratories Safety Standard UL 1242 and meets ANSI C80.6. These standards have been adopted as Federal Specifications in lieu of WWC-581-Type 2. IMC is recognized as an equipment grounding conductor by NEC Section 250-118.

Installation of IMC shall be in accordance with the National Electrical Code and the UL listing information. Allied Tube & Conduit IMC is listed in category DYBY. Master bundles conform to NEMA standard RN2.


Intermediate Metal Conduit shall be equal to that manufactured by Allied Tube & Conduit Corporation. IMC shall be hot-dip galvanized steel O.D. with an organic corrosion resistant I.D. coating and shall be produced in accordance with U.L. Safety Standard #1242 and ANSI C80.6 and shall be listed by a nationally recognized testing laboratory with follow-up service. Threads shall be hot-dip galvanized after cutting. Kwik-Couple IMC meets U.L. Safety Standard #514-B. It is noted that these U.L. standards have been adopted by the federal government and separate military specifications no longer exist.