PSC Glossary/3438

PSC 3438

MISCELLANEOUS WELDING EQUIPMENT

Overview

The Product Service Code (PSC) system categorizes what the U.S. government buys so contract actions can be consistently coded, tracked, and analyzed across FPDS/SAM reporting. The PSC Manual maintained by the General Services Administration (GSA) defines each code and provides usage guidance across federal data systems and reporting workflows. 1

PSC 3438 identifies “Miscellaneous Welding Equipment.” Within Group 34 (Metalworking Machinery), PSC 3438 includes thermite welding equipment, flux recovery machines, flux dispensers, arc converters, and welding panels. It sits alongside adjacent equipment classes such as electric arc welding machines (3431), resistance welding machines (3432), gas welding/heat cutting equipment (3433), and welding positioners/manipulators (3436). Supplies and accessories are coded separately under 3439. 1

See also on G2X:

  • G2X — PSC 3438 overview
  • G2X — PSC 3431 Electric Arc Welding Equipment
  • G2X — PSC 3439 Misc. Welding, Soldering, and Brazing Supplies and Accessories

What this PSC covers

  • Thermite welding equipment used for joining metals. 1
  • Flux recovery machines supporting welding operations. 1
  • Flux dispensing machines for welding processes. 1
  • Arc converters used with welding systems. 1
  • Welding panels and related control panels. 1
  • Miscellaneous welding equipment identified under 3438 in the PSC Manual. 1
TypeCodeDescriptor
PSC3431Electric Arc Welding Equipment
PSC3432Electric Resistance Welding Equipment
PSC3433Gas Welding, Heat Cutting, and Metalizing Equipment
PSC3436Welding Positioners and Manipulators
PSC3439Misc. Welding, Soldering, and Brazing Supplies and Accessories

Source: PSC Manual, Group 34. 1

Boundary notes and coding tips

  • Distinguish equipment vs. supplies: supplies and accessories (e.g., electrodes, rods, soldering fluxes) are under 3439. Equipment items listed for 3438 include thermite welding equipment, flux recovery/dispensing machines, arc converters, and welding panels. 1
  • Use specific welding machine classes when applicable: arc machines fall under 3431; resistance machines under 3432; gas welding/heat cutting/metalizing equipment under 3433; positioners/manipulators under 3436. 1
  • FPDS/SAM entries should reflect the predominant product being purchased (PSC data element 8A). 1

Frequently asked questions

  • What items are explicitly included in PSC 3438?

    PSC 3438 includes thermite welding equipment, flux recovery machines, flux dispensers, arc converters, and welding panels. It is intended for miscellaneous welding equipment that does not fit squarely in the specific machine classes for arc, resistance, or gas welding equipment. 1

  • How does PSC 3438 differ from PSC 3431 and PSC 3432?

    PSC 3431 covers electric arc welding machines, and PSC 3432 covers electric resistance welding machines. PSC 3438 covers other welding equipment such as thermite welding gear, flux recovery/dispensing machines, arc converters, and welding panels. 1

  • Are welding supplies coded under PSC 3438?

    No. Welding supplies and accessories (e.g., electrodes, rods, brazing/soldering fluxes, solder) are grouped under PSC 3439. Use PSC 3438 for the equipment items enumerated for this class, not for consumables or accessories. 1

  • Where are PSC codes used in federal reporting?

    PSCs are used across federal procurement reporting and can be viewed through SAM.gov’s Contract Data (DataBank). They underpin FPDS-derived reporting of “what” was bought and enable analysis of spending by product/service type across agencies and time. 2

  • Is there an official NAICS crosswalk for PSC 3438?

    Not specified by official sources. 3

Useful resources

  • PSC Manual (April 2025), Section D – Product Codes (Group 34). 1
  • SAM.gov — Contract Data (DataBank/FPDS context). 2
  • Product and Service Code Manual landing page. 3

References

  1. General Services Administration, Product and Service Codes (PSC) Manual, April 2025 edition (PDF). https://login.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
  2. SAM.gov, Contract Data. https://sam.gov/content/contract-data
  3. Acquisition.gov, Product and Service Code Manual document library. https://www.acquisition.gov/psc-manual

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