NAICS Code 331511-07 - Manhole Covers (Manufacturing)

Marketing Level - NAICS 8-Digit

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NAICS CODE 331511-07
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NAICS Code 331511-07 Description (8-Digit)

The Manhole Covers Manufacturing industry is a subdivision of the Iron Foundries Manufacturing industry. This industry involves the production of manhole covers, which are used to cover openings in streets, sidewalks, and other public areas to provide access to underground utility lines and other infrastructure. Manhole covers are typically made of cast iron, although other materials such as steel, aluminum, and composite materials may also be used. The manufacturing process involves melting the metal, pouring it into molds, and then finishing the covers with machining and coating processes. Manhole covers are an essential component of urban infrastructure and are used in a range of applications, including sewer systems, water supply systems, and telecommunications networks.

Parent Code - Official US Census

Official 6‑digit NAICS codes serve as the parent classification used for government registrations and documentation. The marketing-level 8‑digit codes act as child extensions of these official classifications, providing refined segmentation for more precise targeting and detailed niche insights. Related industries are listed under the parent code, offering a broader context of the industry environment. For further details on the official classification for this industry, please visit the U.S. Census Bureau NAICS Code 331511 page

Tools

Tools commonly used in the Manhole Covers (Manufacturing) industry for day-to-day tasks and operations.

  • Furnaces
  • Molds
  • Ladles
  • Crucibles
  • Sand mixers
  • Grinders
  • Lathes
  • Drills
  • Coating equipment
  • Forklifts

Industry Examples of Manhole Covers (Manufacturing)

Common products and services typical of NAICS Code 331511-07, illustrating the main business activities and contributions to the market.

  • Municipal infrastructure
  • Sewer systems
  • Water supply systems
  • Telecommunications networks
  • Industrial facilities
  • Commercial buildings
  • Residential developments
  • Transportation infrastructure
  • Parks and public spaces
  • Military installations

History

A concise historical narrative of NAICS Code 331511-07 covering global milestones and recent developments within the United States.

  • The manufacturing of manhole covers has been around for centuries, with the earliest known manhole covers dating back to ancient Rome. These covers were made of stone and were used to cover the city's sewer system. In the 19th century, cast iron became the preferred material for manhole covers due to its durability and strength. The first manhole cover with a hinged opening was patented in 1854 by Stephen H. West. In the United States, the manhole cover industry saw significant growth during the early 20th century due to the expansion of urban areas and the need for more extensive sewer systems. In recent years, the industry has seen advancements in materials and design, with the use of composite materials and the incorporation of safety features such as anti-slip surfaces.