SIC Code 3321-03 - Manhole Covers (Manufacturing)

Marketing Level - SIC 6-Digit

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SIC Code 3321-03 Description (6-Digit)

The Manhole Covers Manufacturing industry, classified under SIC Code 3321, involves the production of manhole covers made of gray and ductile iron. Manhole covers are essential components of urban infrastructure, providing access to underground utilities such as sewers, electrical and telecommunication lines, and water mains. The manufacturing process of manhole covers requires a high level of precision and attention to detail to ensure that the covers are durable, safe, and able to withstand heavy loads.

Hierarchy Navigation for SIC 6-Digit Code 3321-03

Parent Code (less specific)


  • Molding machines
  • Core machines
  • Furnaces
  • Ladles
  • Grinders
  • Shot blasting machines
  • Sand mixers
  • Pattern makers
  • Melting furnaces
  • Pouring cups

Industry Examples of Manhole Covers (Manufacturing)

  • Manhole covers
  • Drain covers
  • Sewer covers
  • Utility access covers
  • Water main covers
  • Electrical access covers
  • Telecommunication access covers
  • Valve covers
  • Inspection covers
  • Catch basin covers

SIC Code 3321-03 - Manhole Covers (Manufacturing)

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