Electrical Department of Transportation (DOT)

Four Star Industries provides products to meet DOT specifications and the unique placement demands associated with trenching, plowing and boring the duct.

Products utilized by the DOT market are as follows:

  • Sizes ½” through 6” on reels or coils
  • Various wall thicknesses to meet all applications such as trench placement, boring or plowing – SDR 9, 11, 13.5 & 15.5   Schedule 40 & 80
  • For identification, solid colors, stripes and co-extruded products are offered
  • Tools and accessories
  • Duct can be supplied empty, empty with pre-installed pull member (tape or rope) or CIC (preinstalled cable in conduit)
  • Duct can be supplied with a pre-installed lubricant for ease of pulling in a cable or cables
  • Duct is sequentially marked