North American Industry Classification System (NAICS) 2002
31-33 - Manufacturing
This sector comprises establishments primarily engaged in the physical or chemical transformation of materials or substances into new products. These products may be finished, in the sense that they are ready to be used or consumed, or semi-finished, in the sense of becoming a raw material for an establishment to use in further manufacturing. Related activities, such as the assembly of the component parts of manufactured goods; the blending of materials; and the finishing of manufactured products by dyeing, heat-treating, plating and similar operations are also treated as manufacturing activities. Manufacturing establishments are known by a variety of trade designations, such as plants, factories or mills.
Manufacturing establishments may own the materials which they transform or they may transform materials owned by other establishments. Manufacturing may take place in factories or in workers' homes, using either machinery or hand tools.
Certain activities involving the transformation of goods are classified in other sectors. Some examples are post-harvest activities of agricultural establishments, such as crop drying; logging; the beneficiating of mineral ores; the production of structures by construction establishments; and various activities conducted by retailers, such as meat cutting and the assembly of products such as bicycles and computers.
333 - Machinery Manufacturing
This subsector comprises establishments primarily engaged in manufacturing industrial and commercial machinery. These establishments assemble parts into components, subassemblies and complete machines. They may make the parts themselves, using general metal-working processes, or purchase them.
Establishments tend to specialize in producing machinery designed for particular applications, and this is reflected in the structure of the industry groups and industries. A broad distinction exists between general-purpose machinery, that is designed to be used in a variety of industrial applications, such as pumping or machining, and special-purpose machinery, that is designed to be used in a particular industry, such as agriculture or printing. The first three industry groups consist of establishments that produce special-purpose machinery. Establishments that produce general-purpose machinery are classified in the remaining industry groups.
Establishments primarily engaged in rebuilding machinery are included in the same industry as establishments manufacturing the particular type of new machinery. Unless otherwise specified, establishments primarily engaged in manufacturing parts, designed for use solely or principally with a particular machine, are classified in the same industry as establishments manufacturing that type of machinery.
3339 - Other General-Purpose Machinery Manufacturing
This industry group comprises establishments, not classified to any other industry group, primarily engaged in manufacturing machinery that is not designed for use in any specific industry.
33391 - Pump and Compressor Manufacturing
This industry comprises establishments primarily engaged in manufacturing pumps, pumping equipment and compressors for general use.
Exclusion(s):
Establishments primarily engaged in:
- manufacturing agricultural spraying and dusting equipment (See 33311 Agricultural Implement Manufacturing)
- manufacturing air-conditioning and refrigeration systems and compressors (except motor vehicle) (See 33341 Ventilation, Heating, Air-Conditioning and Commercial Refrigeration Equipment Manufacturing)
- manufacturing pneumatic pumps and motors for fluid power transmission (See 33399 All Other General-Purpose Machinery Manufacturing)
- manufacturing motor vehicle pumps (See 3363 Motor Vehicle Parts Manufacturing)
- manufacturing motor vehicle air-conditioning systems and compressors (See 33639 Other Motor Vehicle Parts Manufacturing)
- manufacturing laboratory vacuum pumps (See 33911 Medical Equipment and Supplies Manufacturing)
33392 - Material Handling Equipment Manufacturing
This industry comprises establishments primarily engaged in manufacturing material handling equipment.
Exclusion(s):
Establishments primarily engaged in:
- manufacturing farm-type wheeled tractors (See 33311 Agricultural Implement Manufacturing)
- manufacturing construction tractors and cranes (See 33312 Construction Machinery Manufacturing)
- manufacturing motor vehicle trailers (See 33621 Motor Vehicle Body and Trailer Manufacturing)
33399 - All Other General-Purpose Machinery Manufacturing
This industry comprises establishments, not classified to any other industry, primarily engaged in manufacturing machinery that is not designed for use in any specific industry.
Exclusion(s):
Establishments primarily engaged in:
- manufacturing bakery ovens, and cement, wood and chemical kilns (See 33329 Other Industrial Machinery Manufacturing)
- manufacturing furnace filters (See 33341 Ventilation, Heating, Air-Conditioning and Commercial Refrigeration Equipment Manufacturing)
- manufacturing electric welding transformers (See 33531 Electrical Equipment Manufacturing)
- manufacturing motor vehicle engine filters, and motor vehicle screw jacks (See 33639 Other Motor Vehicle Parts Manufacturing)
- manufacturing laboratory scales and balances (See 33911 Medical Equipment and Supplies Manufacturing)
- Date modified: