Manufacturing of aluminum, steel, and other sheet metal culverts, flumes, irrigation pipes, etc.

Facility	City	State	Employees	Status
LCL C Metals INC	Austell	GA	—	● ACTIVE
Ldi Industries, INC.	Manitowoc	WI	—	● ACTIVE
Lenco Industries, INC.	Pittsfield	MA	—	● ACTIVE
Lockheed Martin Corporation	Pinellas Park	FL	—	● ACTIVE
Lodolce Machine Co, INC	Saugerties	NY	—	● ACTIVE
Mac Cal CO	San Jose	CA	—	● ACTIVE
Macias Sheet Metal	Los Angeles	CA	—	● ACTIVE
Magic Metals, INC.	Union Gap	WA	—	● ACTIVE
MTMapp Technologies, L.l.c.	Joplin	MO	100–499	● ACTIVE
Mass Precision, INC.	San Jose	CA	—	● ACTIVE
Master Metal Products Company	San Jose	CA	—	● ACTIVE
MCMbi Construction Services INC	Yakima	WA	—	● ACTIVE
Mcalpin Industries INC.	Rochester	NY	—	● ACTIVE
Mcdonald Air & Sheet Metal INC.	Orlando	FL	20–99	● ACTIVE
Mcgill Airflow LLC	Fountain Inn	SC	20–99	● ACTIVE
Mercury Aircraft INC	Hammondsport	NY	100–499	● ACTIVE
Meta Fab, INC	Hillsboro	OR	—	● ACTIVE
Metalcrafters, INC.	Methuen	MA	20–99	● ACTIVE
MOMetalcraft of Mayville INC	Mayville	WI	100–499	● ACTIVE
Metallion Industries, INC.	Estacada	OR	—	● ACTIVE
Metal Roofing Systems INC	Stanley	NC	—	● ACTIVE
Meva Formwork Systems INC	Springfield	OH	—	● ACTIVE
Mid-continent Engineering, LLC	Minneapolis	MN	—	● ACTIVE
Mikron Manufacturing, INC.	Colorado Springs	CO	—	● ACTIVE
Millennium Metalcraft, INC.	Fremont	CA	—	● ACTIVE

FactoryRegistry lists 3,557 facilities whose primary industry classification is one of the 2 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced aluminum, steel, and other sheet metal culverts, flumes, irrigation pipes, etc., in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 2 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported, and withheld the establishment count for every one of them.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2040925000. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.