Operating signal within 12 months from two or more independent sources.
What they make
Plate Work Manufacturing332313- fabrication
- facility maintenance
- fire escapes
- steps
- handrails
- grating
- registered contractor
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Gateway Precision Technologies LLC | Covington | Sheet Metal Work Manufacturing 332322 | UNVERIFIED | 3.5 KM |
| Afco Manufacturing INC. | Covington | Fabricated Structural Metal Manufacturing 332312 | UNVERIFIED | 4.0 KM |
| The Wm. Lang & Sons Co. | Cincinnati | Fabricated Structural Metal Manufacturing 332312 | LIKELY ACTIVE | 5.3 KM |
| Metal Solutions Design & Fabrication LLC | Dayton | Fabricated Structural Metal Manufacturing 332312 | ACTIVE | 6.2 KM |
| Carlisle & Finch CO | Cincinnati | Fabricated Structural Metal Manufacturing 332312 | ACTIVE | 8.1 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
3 sources hold this plant, and 10 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord VBZMW4V9E1J5 · first seen DEC 2025 · last seen DEC 2025
- SBA Paycheck Protection Program loan recordsEXISTENCERecord OH|cincinnati|521 harriet st · first seen FEB 2021 · last seen FEB 2021
IN HAMILTON COUNTY44 other plants share this one’s industry (Architectural and Structural Metals Manufacturing, NAICS 3323); 25 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: MONNIG WELDING, LLC · DEC 2025
- Street address
- SAM.gov: 521 HARRIET ST · DEC 2025
- City
- SAM.gov: CINCINNATI · DEC 2025
- State
- SAM.gov: OH · DEC 2025
- Coordinates
- Census geocoder: 39.100295411275,-84.537005914486 · JUL 2026
- Employees (band)
- SBA PPP: 1-19 · FEB 2021
- Website
- SAM.gov: Monnigwelding.com · DEC 2025
- CAGE code
- SAM.gov: 9PRK7 · DEC 2025
- PPP loan
- SBA PPP: PPP loan x1, approved 2021-02-13, 8 jobs reported · FEB 2021
- SAM registration expires
- SAM.gov: 2026-12-17 · DEC 2025