SIC Code 3321-02 - Foundries-Gray Iron (Manufacturing)

Marketing Level - SIC 6-Digit

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SIC Code 3321-02 Description (6-Digit)

Foundries-Gray Iron (Manufacturing) is an industry that involves the production of gray iron castings, which are made by melting iron and adding carbon and silicon to create a material that is strong, durable, and resistant to wear and tear. Gray iron is used in a wide range of applications, including automotive parts, pipes, valves, and machinery components. The process of creating gray iron castings involves several steps, including melting the iron, pouring it into molds, and allowing it to cool and solidify. Foundries-Gray Iron (Manufacturing) companies may also perform finishing operations such as machining, grinding, and painting to prepare the castings for use.

Hierarchy Navigation for SIC 6-Digit Code 3321-02

Parent Code (less specific)


  • Cupola furnace
  • Induction furnace
  • Molding sand
  • Core sand
  • Ladles
  • Tundish
  • Crucibles
  • Shot blasting machine
  • Grinding machine
  • Sand blasting machine
  • Spectrometer
  • Xray machine
  • Ultrasonic testing equipment
  • Pattern making equipment
  • Mold making equipment
  • Pouring equipment
  • Cooling equipment
  • Cleaning equipment
  • Painting equipment

Industry Examples of Foundries-Gray Iron (Manufacturing)

  • Automotive parts
  • Pipe fittings
  • Valves
  • Machinery components
  • Manhole covers
  • Pump housings
  • Engine blocks
  • Transmission cases
  • Brake drums
  • Flywheels

SIC Code 3321-02 - Foundries-Gray Iron (Manufacturing)

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