Superior Iron Works, LLC
45034 Underwood Ln, Ste 100, Sterling, VA 20166
Operating signal within 24 months, or from a single source.
What they make
Fabricated Structural Metal Manufacturing332312Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Nicomedia Steel LLC | Sterling | Fabricated Structural Metal Manufacturing 332312 | ACTIVE | 0.0 KM |
| Trowbridge Steel Co., LLC | Sterling | Fabricated Structural Metal Manufacturing 332312 | ACTIVE | 0.6 KM |
| 610-ram Fabrication-sterling | Sterling | Sheet Metal Work Manufacturing 332322 | LIKELY ACTIVE | 0.8 KM |
| K-form, Incorporated | Sterling | Plate Work Manufacturing 332313 | ACTIVE | 1.9 KM |
| Pro-type INC | Sterling | Sheet Metal Work Manufacturing 332322 | UNVERIFIED | 4.7 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 8 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.
EPA cross-references this facility in AIR, AIRS/AFS, CEDS, OSHA-OIS · EPA site type STATIONARY.
- SAM.gov entity registrationOPERATINGRecord MFGEJF6E34D1 · first seen SEP 2025 · last seen SEP 2025
- EPA Facility Registry ServiceEXISTENCERecord 110001910978 · first seen JAN 2015 · last seen JAN 2015
ALSO RECORDED ASSUPERIOR IRON WORKS INCORPORATED
IN LOUDOUN COUNTY11 other plants share this one’s industry (Architectural and Structural Metals Manufacturing, NAICS 3323); 3 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.
- NameSOURCES DISAGREE
- EPA: SUPERIOR IRON WORKS INCORPORATED · JUL 2026
- SAM.gov: SUPERIOR IRON WORKS, LLC · SEP 2025 · ON THIS PAGE
- Street address
- EPA: 45034 UNDERWOOD LN · JUL 2026 · ON THIS PAGE
- SAM.gov: 45034 UNDERWOOD LN · SEP 2025 · ON THIS PAGE
- City
- EPA: STERLING · JUL 2026 · ON THIS PAGE
- SAM.gov: STERLING · SEP 2025 · ON THIS PAGE
- State
- EPA: VA · JUL 2026 · ON THIS PAGE
- SAM.gov: VA · SEP 2025 · ON THIS PAGE
- County (FIPS code)
- EPA: 51107 · SEP 2026
- Coordinates
- EPA: 38.98154,-77.44259 · JUL 2026
- CAGE code
- SAM.gov: 3GWL8 · SEP 2025
- SAM registration expires
- SAM.gov: 2026-09-08 · SEP 2025