Michigan Seamless Tube, LLC

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
Tpl LLC	West Bloomfield	Iron and Steel Mills and Ferroalloy Manufacturing 331110	● ACTIVE	24.8 KM
RRRegal Recycling LLC	Howell	Iron and Steel Mills and Ferroalloy Manufacturing 331111	◇ UNVERIFIED	26.0 KM
CCComputers & Concepts INC.	Farmington Hills	Other Communication and Energy Wire Manufacturing 335929	▲ REPORTED CLOSED	25.1 KM
CMContour Machining INC	Livonia	Machine Shops 332710	◐ LIKELY ACTIVE	25.8 KM
UAUltra Aluminum	Howell	Iron and Steel Mills and Ferroalloy Manufacturing 331110	◐ LIKELY ACTIVE	34.2 KM

Every listed plant in Oakland County

Also at this address

No other federal record shares this street address.

Where this record comes from

5 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.

EPA cross-references this facility in AIR, AIRS/AFS, BR, E-GGRT, EIS, ICIS, NPDES, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen JUL 2026 · last seen JUL 2026
• OSHA injury and illness reportsOPERATING
  Record 997776 · first seen DEC 2025 · last seen DEC 2025
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2023 · last seen DEC 2024
• DOL Form 5500 retirement plan filingsOPERATING
  Record 020643850|MI|48178|400 mcmunn st · first seen DEC 2024 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110010306784 · first seen JUN 2017 · last seen JUN 2017

IN OAKLAND COUNTY4 other plants share this one’s industry (Iron and Steel Mills and Ferroalloy Manufacturing, NAICS 3311); 1 of them has 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

EPA: MICHIGAN SEAMLESS TUBE, LLC · NOV 2026

Street address

EPA: 400 MC MUNN STREET · NOV 2026

City

EPA: SOUTH LYON · NOV 2026

State

EPA: MI · NOV 2026

County (FIPS code)

EPA: 26125 · NOV 2026

Coordinates

EPA: 42.45766,-83.65611 · NOV 2026

Employees (band)

OSHA: 100-499 · DEC 2025

Retirement plan filing (Form 5500)

DOL: 168 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024

Hazardous waste generator (RCRA)

EPA ECHO: LQG · NOV 2026

State business registration

TX Comptroller: MICHIGAN SEAMLESS TUBE LLC, registered with the Texas Comptroller of Public Accounts; Corporation; revoked