Description
Gas Services

Possible NAICS Codes
221210 – Natural Gas Distribution
221122 – Electric Power Distribution
211130 – Natural Gas Extraction
221112 – Fossil Fuel Electric Power Generation
221118 – Other Electric Power Generation
926130 – Regulation and Administration of Communications, Electric, Gas, and Other Utilities
211120 – Crude Petroleum Extraction

Possible NAICS Codes
531190 – Lessors of Other Real Estate Property
531120 – Lessors of Nonresidential Buildings (except Miniwarehouses)
237130 – Power and Communication Line and Related Structures Construction
721211 – RV (Recreational Vehicle) Parks and Campgrounds
812930 – Parking Lots and Garages
517810 – All Other Telecommunications
921190 – Other General Government Support
532490 – Other Commercial and Industrial Machinery and Equipment Rental and Leasing
516210 – Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers
531110 – Lessors of Residential Buildings and Dwellings

Possible NAICS Codes
237120 – Oil and Gas Pipeline and Related Structures Construction
221210 – Natural Gas Distribution
486210 – Pipeline Transportation of Natural Gas
921190 – Other General Government Support
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
811210 – Electronic and Precision Equipment Repair and Maintenance
561990 – All Other Support Services
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
333912 – Air and Gas Compressor Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing

Includes
Adapters; Bends; Caps; Clamps; Connectors; Couplings; Crosses; Elbows; Expansion Joints; Ferrules; Flanges; Laterals; Lubrication Fittings; Manifolds; Nipples; Nozzles; Outlets; Plugs; Reducers; Swing and Swivel Joints; Tees; Traps; Unions; Wyes.

Excludes
Air Conditioning-Heating Fittings (FSC 4520); Bituminized Fiber and Concrete Fittings (FSC 5630); Conduit Boxes and Fittings (FSC 5975); Downspout Fittings (FSC 5670); Medical and Surgical Fittings (FSC 6515); Laboratory Fittings (FSC 6640); Post Caps and Rail Ends (FSC 5660); Machine Thread Bushings and Plugs (FSC 5365).

Possible NAICS Codes
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
332919 – Other Metal Valve and Pipe Fitting Manufacturing
326122 – Plastics Pipe and Pipe Fitting Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
333914 – Measuring, Dispensing, and Other Pumping Equipment Manufacturing
333120 – Construction Machinery Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing

Possible NAICS Codes
561210 – Facilities Support Services
236220 – Commercial and Institutional Building Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
238290 – Other Building Equipment Contractors
236210 – Industrial Building Construction
238320 – Painting and Wall Covering Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
238990 – All Other Specialty Trade Contractors
561720 – Janitorial Services

Description
Engineering and Technical Services

Includes
Includes: System Engineering, Technical Assistance and Other Services Used to Support the Program Office During the Acquisition Cycle

Excludes
Excludes: Language Translation and Sign Language Interpretation (PSC R608)

Possible NAICS Codes
541330 – Engineering Services
541990 – All Other Professional, Scientific, and Technical Services
541512 – Computer Systems Design Services
541715 – Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
541690 – Other Scientific and Technical Consulting Services
541611 – Administrative Management and General Management Consulting Services
541519 – Other Computer Related Services
541620 – Environmental Consulting Services
541713 – Research and Development in Nanotechnology
336611 – Ship Building and Repairing

Description
Inspection and Laboratory Services (except medical/dental): Pipe, Tubing, Hose, and Fittings

Includes
Includes: Commercial Testing and Laboratory Services

Excludes
Excludes: Medical and Dental Laboratory Services

Possible NAICS Codes
541990 – All Other Professional, Scientific, and Technical Services
237110 – Water and Sewer Line and Related Structures Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
541620 – Environmental Consulting Services
541380 – Testing Laboratories and Services
922160 – Fire Protection
562998 – All Other Miscellaneous Waste Management Services
561621 – Security Systems Services (except Locksmiths)
541330 – Engineering Services
486210 – Pipeline Transportation of Natural Gas

Includes
Anesthesia Apparatus; Blood Transfusion Apparatus; Oxygen Therapy Apparatus; Respirators; Orthopedic Supplies; Arch Supports; Clinical Thermometers; Sutures; Hearing Aids; Veterinary Equipment, Endoscopes, Fiber Optic.

Excludes
Ophthalmic Instruments, Equipment, and Supplies; Non-Medical Endoscopes.

Possible NAICS Codes
423450 – Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers
339113 – Surgical Appliance and Supplies Manufacturing
339112 – Surgical and Medical Instrument Manufacturing
325411 – Medicinal and Botanical Manufacturing
334510 – Electromedical and Electrotherapeutic Apparatus Manufacturing

Includes
Culvert Pipes; Culvert Pipe Connector Bands; Metallic Pipes; Plastic Pipes; Tubes and Rigid Tubing and their assemblies.

Excludes
Air Conditioning-Heating Pipes (FSC 4520); Asbestos and Cement, Bituminized Fiber, Clay and Concrete Pipes (FSC 5630); Conduit Pipes and their assemblies (FSC 5975); Downspout Pipes (FSC 5670); Exhaust Pipes (FSC 1560, 2990, and 4520); Fire Extinguishing Systems Pipes and Tubes and their assemblies (FSC 4210); Flexible Tubing (FSC 4720; Glass Tubing (FSC 6640, and 9340); Laboratory Tubes (FSC 6640); Medical and Surgical Tubes (FSC 6515).

Possible NAICS Codes
331210 – Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
336411 – Aircraft Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332996 – Fabricated Pipe and Pipe Fitting Manufacturing
331420 – Copper Rolling, Drawing, Extruding, and Alloying
326122 – Plastics Pipe and Pipe Fitting Manufacturing
332722 – Bolt, Nut, Screw, Rivet, and Washer Manufacturing
488190 – Other Support Activities for Air Transportation
333618 – Other Engine Equipment Manufacturing
336412 – Aircraft Engine and Engine Parts Manufacturing