2022 NAICS national industry in sector 31-33 Manufacturing
334517 Irradiation Apparatus Manufacturing
NAICS 334517 is the US industry code for irradiation apparatus manufacturing. This U.S.
- Code
- 334517 (2022 NAICS)
- Title
- Irradiation Apparatus Manufacturing
- Part of
- Navigational, Measuring, Electromedical, and Control Instruments Manufacturing
- SBA small business limit
- Up to 1,200 employees
- Closest UK SIC
- 26600 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing irradiation apparatus and tubes for applications, such as medical diagnostic, medical therapeutic, industrial, research, and scientific evaluation. Irradiation can take the form of beta-rays, gamma-rays, X-rays, or other ionizing radiation.
Activities listed under 334517
The Census index assigns these 19 activities to this code. If your business matches one, this is your code.
- Beta-ray irradiation equipment manufacturing
- Computerized axial tomography (CT/CAT) scanners manufacturing
- CT/CAT (computerized axial tomography) scanners manufacturing
- Fluoroscopes manufacturing
- Fluoroscopic X-ray apparatus and tubes manufacturing
- Gamma-ray irradiation equipment manufacturing
- Generators, X-ray, manufacturing
- Irradiation apparatus and tubes (e.g., industrial, medical diagnostic, medical therapeutic, research, scientific), manufacturing
- Irradiation equipment manufacturing
- Lamps, X-ray, manufacturing
- Medical radiation therapy equipment manufacturing
- Nuclear irradiation equipment manufacturing
- Radium equipment manufacturing
- Therapeutic X-ray apparatus and tubes (e.g., medical, industrial, research) manufacturing
- Tubes, X-ray, manufacturing
- X-ray apparatus and tubes (e.g., control, industrial, medical, research) manufacturing
- X-ray generators manufacturing
- X-ray irradiation equipment manufacturing
- X-ray tubes manufacturing
SBA size standard for 334517
To count as a small business for SBA loans and federal contracts under NAICS 334517, your business (including affiliates) must not exceed 1,200 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2660), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
- 334510Electromedical and Electrotherapeutic Apparatus Manufacturing
- 334511Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
- 334512Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
- 334513Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables
- 334514Totalizing Fluid Meter and Counting Device Manufacturing
- 334515Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
- 334516Analytical Laboratory Instrument Manufacturing
- 334519Other Measuring and Controlling Device Manufacturing
Data last changed November 14, 2026. How this page is built.