Publish Date
              Pages
              12
          Spec. Division
              40 - Process Integration
          History: Below is a listing of the Revisions and Changes made to this UFGS.
| KEY | PREPARING ACTIVITY (PA) | A Army | N Navy | F Air Force | S NASA [ARCHIVED] | 
|---|---|---|---|---|---|
| ACTION | N New | R Revision | C Change | D Deletion | 
| Release | PA | Date | Action | Change # | Nature of Change or Revision | 
|---|---|---|---|---|---|
| Feb-2023 | N | Feb-2023 | R | Complete life cycle review. Update technical requirements, references, formatting. Incorporated CCR 11345 | |
| May-2016 | N | May-2016 | R | Tri-Annual Database Maintenance (TADM) completed | |
| May-2016 | N | May-2016 | R | Tri-Annual Database Maintenance and the revisions are minor - modified Subpart 1.3.1, 1.5, 3.1.1.2, 3.2.1, 3.3, 3.3.1 | |
| May-2014 | N | Aug-2010 | C | 2 | SRF update, changed 05 05 23 WELDING, STRUCTURAL to 05 05 23.16 STRUCTURAL WELDING | 
| Aug-2010 | N | Aug-2010 | R | Submittal article compliance; Added subpart 1.5; revised subpart 3.3.2.1; other minor revisions throughout | |
| Feb-2009 | N | Feb-2009 | N | Supersedes UFGS 23 31 13.20 40 Welding Metal Ductwork |