EXPERT ENGINEERING & TRADING CORPORATION

Electrical Contractors

NAICS #23821 | This industry comprises establishments primarily engaged in installing and servicing electrical wiring and equipment. Electrical contractors included in this industry may include both the parts and labor when performing work. Electrical contractors may perform new work, additions, alterations, maintenance, and repairs. Installing and maintaining telecommunications lines by telecommunications companies--are classified in Subsector 517, Telecommunications; Constructing power and communication transmission lines--are classified in Industry 237130, Power and Communication Line and Related Structures Construction; and Burglar and fire alarm installation combined with sales, maintenance, or monitoring services--are classified in U.S. Industry 561621, Security Systems Services (except Locksmiths).

Other Metal Valve and Pipe Fitting Manufacturing

NAICS #332919 | This U.S. industry comprises establishments primarily engaged in manufacturing metal valves (except industrial valves, fluid power valves, fluid power hose fittings, and plumbing fixture fittings and trim). Manufacturing fluid power valves and hose fittings--are classified in U.S. Industry 332912, Fluid Power Valve and Hose Fitting Manufacturing; Manufacturing industrial valves--are classified in U.S. Industry 332911, Industrial Valve Manufacturing; Manufacturing plastics aerosol spray nozzles--are classified in U.S. Industry 326199, All Other Plastics Product Manufacturing; Casting iron pipe fittings and couplings without machining--are classified in U.S. Industry 331511, Iron Foundries; Manufacturing metal couplings from purchased metal pipe--are classified in U.S. Industry 332996, Fabricated Pipe and Pipe Fitting Manufacturing; and Manufacturing plastics pipe fittings and couplings--are classified in U.S. Industry 326122, Plastics Pipe and Pipe Fitting Manufacturing.

Machinery Manufacturing

NAICS #333 | Industries in the Machinery Manufacturing subsector create end products that apply mechanical force, for example, the application of gears and levers, to perform work. Some important processes for the manufacture of machinery are forging, stamping, bending, forming, and machining that are used to shape individual pieces of metal. Processes, such as welding and assembling are used to join separate parts together. Although these processes are similar to those used in metal fabricating establishments, machinery manufacturing is different because it typically employs multiple metal forming processes in manufacturing the various parts of the machine. Moreover, complex assembly operations are an inherent part of the production process.

In general, design considerations are very important in machinery production. Establishments specialize in making machinery designed for particular applications. Thus, design is considered to be part of the production process for the purpose of implementing NAICS. The NAICS structure reflects this by defining industries and industry groups that make machinery for different applications. A broad distinction exists between machinery that is generally used in a variety of industrial applications (i.e., general purpose machinery) and machinery that is designed to be used in a particular industry (i.e., special purpose machinery). Three industry groups consist of special purpose machinery--Agricultural, Construction, and Mining Machinery Manufacturing; Industrial Machinery Manufacturing; and Commercial and Service Industry Machinery Manufacturing. The other industry groups make general-purpose machinery: Ventilation, Heating, Air Conditioning, and Commercial Refrigeration Equipment Manufacturing; Metalworking Machinery Manufacturing; Engine, Turbine, and Power Transmission Equipment Manufacturing; and Other General Purpose Machinery Manufacturing.

Engine, Turbine, and Power Transmission Equipment Manufacturing

NAICS #3336 |

Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing

NAICS #333612 | This U.S. industry comprises establishments primarily engaged in manufacturing gears, speed changers, and industrial high-speed drives (except hydrostatic). Manufacturing motor vehicle power transmission equipment--are classified in Industry 336350, Motor Vehicle Transmission and Power Train Parts Manufacturing; Manufacturing aircraft power transmission equipment--are classified in U.S. Industry 336413, Other Aircraft Parts and Auxiliary Equipment Manufacturing; and Manufacturing industrial hydrostatic transmissions--are classified in U.S. Industry 333996, Fluid Power Pump and Motor Manufacturing.

Fluid Power Pump and Motor Manufacturing

NAICS #333996 | This U.S. industry comprises establishments primarily engaged in manufacturing fluid power (i.e., hydraulic and pneumatic) pumps and motors. Manufacturing fluid pumps for motor vehicles, such as oil pumps, water pumps, and power steering pumps--are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing; Manufacturing general purpose pumps (except fluid power)--are classified in U.S. Industry 333911, Pump and Pumping Equipment Manufacturing; and Manufacturing air compressors--are classified in U.S. Industry 333912, Air and Gas Compressor Manufacturing.

Gasket, Packing, and Sealing Device Manufacturing

NAICS #339991 | This U.S. industry comprises establishments primarily engaged in manufacturing gaskets, packing, and sealing devices of all materials.