Types of Conduit

Conduit Markings

The required markings on the conduit shall be legible, spaced at intervals not to exceed 5 ft. and include:

  • ASTM (letter-Number designation) or applicable standard and material designation HDPE
  • Trade size
  • Type, wall thickness, schedule or dimensional ratio
  • Manufacturer’s name or trademark
  • Month & year of manufacture
  • Sequential foot markings with an accuracy of +/-2%

Optional surface printing:

  • The print line may include special markings or symbols as agreed to between the manufacturer and buyer.