Verified Nov 2026
Metal Fabrication
·
Middle River, Maryland
·
Since 1929
ST Engineering MRAS is a metal fabrication company headquartered in Middle River, Maryland, United States, founded in 1929. It is a wholly-owned subsidiary of ST Engineering, acquired in 2019, and reports 200-500 employees with an estimated revenue band of $250-500M. The company makes aerostructures, engine nacelle systems, and thrust reversers for commercial and defense aviation, and serves the aerospace, military-defense, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In January 2026, CompositesWorld reported on its work pursuing nacelle innovation through automation, integration, and digitalization.
ST Engineering Mras at a glance
Revenue
$250-500M
Est. band
Employees
200-500
Founded
1929
Headquarters
Middle River, Maryland
Certifications
AS9100 · ISO 14001 · ISO 9001
Import activity
17
Industries
Automotive
Electric Vehicles
Military & Defense
Renewable Energy
Industrial Equipment
Aerospace
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
17
Named foreign suppliers
9
Top origins
United States of America · Sweden · United Kingdom · Italy
Shared foreign counterparties do not establish that these companies buy from ST Engineering Mras.
What this tells a buyer
The record contains no customs or trade data for the company; its most recent reported development is a February 23, 2026 showcase of advanced nacelle innovation at the Singapore Airshow 2026, as published on the company's website.
The company lists AS9100, ISO 9001, and ISO 14001 certifications and offers products and services in composites, machining, assembly, tooling, and emissions-related work, along with maintenance, repair, and overhaul (MRO) services.
The company is a wholly-owned subsidiary of ST Engineering, and in July 2025 Aviation Week reported that JetZero selected it to deliver the Z4 engine exhaust.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
97 years in operation (founded 1929).
Holds AS9100, ISO 14001, ISO 9001 certification(s) per public sources.
Overview
ST Engineering MRAS is a metal fabrication company headquartered in Middle River, Maryland, United States, founded in 1929. It is a wholly-owned subsidiary of ST Engineering, acquired in 2019, and reports 200-500 employees with an estimated revenue band of $250-500M. The company makes aerostructures, engine nacelle systems, and thrust reversers for commercial and defense aviation, and serves the aerospace, military-defense, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In January 2026, CompositesWorld reported on its work pursuing nacelle innovation through automation, integration, and digitalization.
At a glance
Attribute | Detail |
|---|---|
Founded | 1929 |
Headquarters | Middle River, Maryland |
Employees | 200-500 |
Revenue | $250-500M (estimated) |
Primary capability | Metal Fabrication |
Certifications | AS9100 · ISO 14001 · ISO 9001 |
What ST Engineering Mras makes
The company lists AS9100, ISO 9001, and ISO 14001 certifications and offers products and services in composites, machining, assembly, tooling, and emissions-related work, along with maintenance, repair, and overhaul (MRO) services.
Products and capabilities described on the company's own site include Emissions, Composite, Machining, Assembly, Tooling (source: mras-usa.com).
Certifications
ST Engineering Mras is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — mras-usa.com
ISO 14001 — mras-usa.com
ISO 9001 — mras-usa.com
Trade and customs footprint
The record contains no customs or trade data for the company; its most recent reported development is a February 23, 2026 showcase of advanced nacelle innovation at the Singapore Airshow 2026, as published on the company's website. US customs bill-of-lading records list 17 inbound shipments across 9 foreign suppliers, with top origins including United States of America · Sweden · United Kingdom · Italy.
Latest developments
2026-10-30 — ST Engineering, Mainblades Advance Automated MRO Inspections (mrobusinesstoday.com)
2026-08-02 — WE’RE HIRING – LEAD INDUSTRIAL CONTROLS ENGINEER | ST Engineering MRAS (linkedin.com)
2026-02-23 — ST Engineering MRAS Showcases Advanced Nacelle Innovation at Singapore Airshow 2026 - ST Engineering MRAS (mras-usa.com)
2026-01-06 — ST Engineering MRAS pursues nacelle innovation via automation, integration and digitalization | CompositesWorld (compositesworld.com)
2025-07-23 — JetZero Selects ST Engineering MRAS To Deliver Z4 Engine Exhaust | Aviation Week (aviationweek.com)
2025-07-21 — ST Engineering MRAS to Design and Manufacture Propulsion System Component for JetZero’s All-Wing Demonstrator Aircraft - ST Engineering MRAS (mras-usa.com)
Facilities
ST Engineering Mras is headquartered in Middle River, Maryland. Public sources also reference these locations:
Singapore — mrobusinesstoday.com
Company details
The company is a wholly-owned subsidiary of ST Engineering, and in July 2025 Aviation Week reported that JetZero selected it to deliver the Z4 engine exhaust. ST Engineering Mras was founded in 1929, has an estimated 200-500 employees, and is headquartered in Middle River, Maryland. On the LightSource stability read it is rated "Established & active": 97 years in operation (founded 1929). Holds AS9100, ISO 14001, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does ST Engineering Mras make?
ST Engineering MRAS is a metal fabrication company headquartered in Middle River, Maryland, United States, founded in 1929. It is a wholly-owned subsidiary of ST Engineering, acquired in 2019, and reports 200-500 employees with an estimated revenue band of $250-500M. The company makes aerostructures, engine nacelle systems, and thrust reversers for commercial and defense aviation, and serves the aerospace, military-defense, automotive, electric-vehicle, renewable-energy, and industrial-equipment sectors. In January 2026, CompositesWorld reported on its work pursuing nacelle innovation through automation, integration, and digitalization.
Where is ST Engineering Mras headquartered?
ST Engineering Mras is headquartered in Middle River, Maryland (103 Chesapeake Park Plz, Middle River, Maryland, 21220).
When was ST Engineering Mras founded?
ST Engineering Mras was founded in 1929.
How big is ST Engineering Mras?
ST Engineering Mras has an estimated 200-500 employees, with revenue in the $250-500M range (estimated).
What certifications does ST Engineering Mras hold?
ST Engineering Mras lists AS9100 · ISO 14001 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does ST Engineering Mras import from overseas suppliers?
US customs bill-of-lading records show 17 inbound shipments for ST Engineering Mras, with top origins including United States of America · Sweden · United Kingdom · Italy.
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Last verified Nov 2026. Is this your company? Request a correction.
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