About Us

The newly formed Nucor Tubular Products (NTP) Group, which brings together the former Southland Tube, Independence Tube Corp. and Republic Conduit, remains committed to taking care of our customers through unmatched quality and customer service. In 2018, NTP added a new product line and started producing automotive mechanical tubing. NTP is part of Nucor Corporation, North America’s largest steelmaker and the largest recycler in North America. Nucor and its affiliates are manufacturers of steel products, with operating facilities primarily in the U.S. and Canada. Nucor employs more than 25,000 teammates throughout North America.

Nucor Tubular Products will continue to redefine what it means to be a part of America’s premier steel company.

  • We’re located in eight facilities spanning over 2.3 million square feet under roof in eight strategically located locations spread among five states.
  • We are a leading manufacturer of structural steel tubing throughout North America.
  • Nucor Tubular Products has manufactured the nation’s premier steel electrical conduit for over 85 years.
  • We serve many of the largest electrical distributors, steel service centers and manufacturers of agricultural, transportation, lighting, fire sprinkler fabricators, and material handling equipment throughout the United States and Canada.


Today our product line includes:

Structural Squares
from 1.5” SQ x .188” wall
through 14” SQ x .625” wall

Structural Rectangles
from 2-1/2” x 1-1/2” x .125” wall
through 16” x 12” x .625” wall

Structural Rounds
from 1.660” OD x .109” wall
through 18” OD x .625” wall

Electrunite® Electrical Metallic Tubing (EMT)
Electrunite® Color Electrical Metallic Tubing (EMT)
Galvite® Electrical Metal Conduit Steel
Intermediate Metal Conduit (IMC)
Aluminum Rigid Conduit





ERW Pipe Piling
to ASTM A252
in Grades 1, 2, and 3.

Pipe Piling
from 6.625” O.D. to 18” O.D.
in walls from .188” to .688” up to 78 feet long.

Mechanical Tubing
Rounds from 1” O.D x 16 gauge to 2” O.D x 14 gauge
Squares from 1/2” SQ x 16 gauge to 3” SQ x 14 gauge
Rectangles from 1 1/2” x 1” x 16 gauge to 4” x 2” x 14 gauge

Auto Mechanical Tubing
from 3/4″ OD to 3.25″ OD
in walls up to .148″

Fire Protection Sprinkler Pipe
to ASTM A135/A795
in sizes 1” NPS through 8” NPS for Schedule 7, Schedule 10, and Schedule 40

Standard Pipe
to ASTM A53
in sizes 1″ NPS through 8″ NPS for Schedules 40 and 80, Walls .188, .240, and .250


We are focused on being the Number One supplier of pipe, tube, and conduit.

  • We produce structural steel tubing with the most advanced tube mill equipment in the industry.
  • Our high frequency welding techniques assure the ultimate in weld integrity.
  • Nucor Tubular Products is the only conduit manufacturer in the United States to electrogalvanize EMT and IMC, resulting in protective zinc coatings that do not flake or chip when subjected to extreme stress.

Even in a crisis, we won’t let you down. Our Decatur, Alabama location was hit by an EF-5 tornado in April, 2011. We purchased the tooling needed to roll the pipe piling sizes in the Marseilles, Illinois location during the re-build of the Decatur mill. We were unwilling to let anything, even a tornado, interrupt our service to our customers.