Heat treating of metal for the trade

Facility	City	State	Employees	Status
MSMetal Spinners Angola	Angola	IN	20–99	◐ LIKELY ACTIVE
MSMetal Spinners Rock Falls	Rock Falls	IL	20–99	◐ LIKELY ACTIVE
MUMetals USA - Gregor Technologies	Torrington	CT	20–99	◐ LIKELY ACTIVE
MUMetals USA Plates and Shapes, INC.	Oakwood	GA	—	◐ LIKELY ACTIVE
MUMetals USA Plates and Shapes, INC.	Westwego	LA	—	◐ LIKELY ACTIVE
MTMetal Techniques INC	Chatsworth	CA	—	▲ REPORTED CLOSED
MWMetal Works	Belton	MO	1–19	◐ LIKELY ACTIVE
MEMetalworks Engineering CORP	Hialeah	FL	—	◐ LIKELY ACTIVE
MIMetalworks Inc Airpark	Lincoln	NE	100–499	◐ LIKELY ACTIVE
MRMetco Reels - A840	Hartselle	AL	20–99	◐ LIKELY ACTIVE
MIMetcraft Industries, Inc	Lees Summit	MO	20–99	◐ LIKELY ACTIVE
MLMetem LLC	Port Angeles	WA	—	◐ LIKELY ACTIVE
MTMeyer Tool Cox Plant	Erlanger	KY	100–499	◐ LIKELY ACTIVE
MTMeyer Tool Cox Plant 2	Erlanger	KY	100–499	◐ LIKELY ACTIVE
Meyer Utility Structures	Fort Worth	TX	100–499	◐ LIKELY ACTIVE
MCMfab CORP	Oak Hills	CA	—	◐ LIKELY ACTIVE
MMFP-Nova	Menomonee Falls	WI	20–99	◐ LIKELY ACTIVE
MHMfs Holdings Incorporated	Stafford Springs	CT	—	◐ LIKELY ACTIVE
MPMGM Products	Conyers	GA	100–499	◐ LIKELY ACTIVE
MMMGS Mfg. Group, Inc. - Tooling	Germantown	WI	100–499	◐ LIKELY ACTIVE
MHM & H Valve Company	Anniston	AL	100–499	◐ LIKELY ACTIVE
MIMhz Induction, INC	Lakeview	MI	—	◐ LIKELY ACTIVE
MCMiami Certified Mobile Welding LLC	Miami	FL	—	◐ LIKELY ACTIVE
MFMiami FL	Miami	FL	20–99	◐ LIKELY ACTIVE
MGMiami Gardens	Hialeah	FL	1–19	◐ LIKELY ACTIVE
MVMiami Valley Precision, INC	Miamisburg	OH	—	◐ LIKELY ACTIVE
MCMIAMP Contech Engineered Solutions LLC	Lantana	FL	1–19	◐ LIKELY ACTIVE
MGMic Group Holdings, LLC	Brenham	TX	—	◐ LIKELY ACTIVE
MAMichigan ATF Holdings LLC	Rose City	MI	1–19	◐ LIKELY ACTIVE
MTMichigan Tool Welding LLC	Thompsonville	MI	—	◐ LIKELY ACTIVE
MMMickelson Metal Works, LLC	Tulsa	OK	1–19	◐ LIKELY ACTIVE
MIMicor Industries, LLC	Decatur	AL	—	◐ LIKELY ACTIVE
MCMicrofinish Co., Inc-Berkeley	Saint Louis	MO	1–19	◐ LIKELY ACTIVE
MCMicrofinish Co., Inc.-Sunset	Saint Louis	MO	1–19	◐ LIKELY ACTIVE
MCMicrofinish Co., Inc.-Truesdale	Truesdale	MO	20–99	◐ LIKELY ACTIVE
MIMicrofinish IPC, LLC-Gratiot	Saint Louis	MO	20–99	◐ LIKELY ACTIVE
MMMicro Machine Works, INC.	Vincent	OH	—	◐ LIKELY ACTIVE
MLMicroMetl Longview	Longview	TX	100–499	◐ LIKELY ACTIVE
MSMicroMetl Sparks	Sparks	NV	20–99	◐ LIKELY ACTIVE
MMMicron Manufacturing Company	Walker	MI	20–99	◐ LIKELY ACTIVE
MLMicrophoto, LLC	Roseville	MI	1–19	◐ LIKELY ACTIVE
MLMicroPrecision LLC	Delavan	WI	100–499	◐ LIKELY ACTIVE
MPMicro Precision Machining, INC.	Campbell	CA	—	◐ LIKELY ACTIVE
MIMicro-Tronics, Inc	Tempe	AZ	100–499	◐ LIKELY ACTIVE
MHMid-America Hydraulic Repair, Inc	La Cygne	KS	1–19	◐ LIKELY ACTIVE
MFMid-Atlantic Fabrication and Finishing	Knightdale	NC	20–99	◐ LIKELY ACTIVE
MCMiddletown CC AKS Steel	Middletown	OH	20–99	◐ LIKELY ACTIVE
MCMidland Chutes Acquisition Company LLC	Elgin	IL	20–99	◐ LIKELY ACTIVE
MOMidland Operations	Midland	PA	1–19	◐ LIKELY ACTIVE
MPMidland PA	Midland	PA	20–99	◐ LIKELY ACTIVE
MMMid-south Metal Buildings LLC	Hernando	MS	—	◐ LIKELY ACTIVE
MPMidstate Phoenix LLC	Phoenix	AZ	—	◐ LIKELY ACTIVE
MSMid-state Stainless, INC.	Grantsburg	WI	—	◐ LIKELY ACTIVE
MMMidway Machining Incorporated	Mandan	ND	1–19	◐ LIKELY ACTIVE
MDMidwest Defense & More LLC	Florissant	MO	—	◐ LIKELY ACTIVE
MWMid West Industries & Development, LTD	Mcpherson	KS	20–99	◐ LIKELY ACTIVE
Midwest Precision Machining	Monticello	MN	20–99	◐ LIKELY ACTIVE
MPMidwest Products and Engineer	Sturtevant	WI	20–99	◐ LIKELY ACTIVE
MPMidwest Products and Engineering Distribution Center	Meonomonee Falls	WI	1–19	◐ LIKELY ACTIVE
MPMidwest Products and Engineering Material Service Center	Milwaukee	WI	1–19	◐ LIKELY ACTIVE
MRMidwest Roll Forming & Mfg	Pierceton	IN	100–499	◐ LIKELY ACTIVE
MSMidwest Screw Products, Inc.	Brooklyn Center	MN	20–99	◐ LIKELY ACTIVE
MBMidyette Bros. Manufacturing INC	Virginia Beach	VA	—	◐ LIKELY ACTIVE
MMMikes Machine Shop & Welding INC	Ola	AR	—	◐ LIKELY ACTIVE
MTMikros Technologies	Claremont	NH	20–99	◐ LIKELY ACTIVE
MCMilitary Cadence Mc Promotions INC	Sarasota	FL	—	◐ LIKELY ACTIVE
MRMilk River Metal Works LLC	Malta	MT	—	◐ LIKELY ACTIVE
MIMillat Industries, CORP.	Kettering	OH	—	◐ LIKELY ACTIVE
MMMillbrook Machining LLC	Millbrook	NY	—	◐ LIKELY ACTIVE
MHMillbury Heat Treat Plant	Millbury	MA	20–99	◐ LIKELY ACTIVE
MCMill Creek Machining	Paullina	IA	20–99	◐ LIKELY ACTIVE
MSMillennium Steel of Texas	San Antonio	TX	100–499	◐ LIKELY ACTIVE
MTMillennium Technologies Plymouth	Plymouth	WI	20–99	◐ LIKELY ACTIVE
MPMiller Precision Mfg. Industries, Inc.	Ottoville	OH	20–99	◐ LIKELY ACTIVE
MMMillers Manufacturing LLC	North Franklin	CT	—	◐ LIKELY ACTIVE
MIMillifab INC.	Covina	CA	—	◐ LIKELY ACTIVE
MPMill Park	Lancaster	OH	100–499	◐ LIKELY ACTIVE
MSMills Specialty Metals LLC	Marietta	GA	20–99	◐ LIKELY ACTIVE
MIMill-tech Industries INC	Grand Prairie	TX	—	◐ LIKELY ACTIVE
MSMilltek Solutions LLC	Scottsboro	AL	—	◐ LIKELY ACTIVE
MMMilltown Marine Designs LLC	Everett	WA	—	◐ LIKELY ACTIVE
MIMilton Industries INC.	Decatur	AL	—	◐ LIKELY ACTIVE
MPMil-tool & Plastics, INC.	Zephyrhills	FL	—	◐ LIKELY ACTIVE
MMilwaukee	Milwaukee	WI	20–99	◐ LIKELY ACTIVE
MMMimic Manufacturing, LLC	Roland	OK	—	◐ LIKELY ACTIVE
M3Minerva 3 D Creations LTD	Sidney	OH	—	◐ LIKELY ACTIVE
MNMineville, New York Plant	Mineville	NY	20–99	◐ LIKELY ACTIVE
MMinneapolis	New Hope	MN	20–99	◐ LIKELY ACTIVE
MMMisa Metal Processing Forest, Mississippi	Forest	MS	1–19	◐ LIKELY ACTIVE
MMMisa Metal Processing Louisville, Kentucky	Louisville	KY	20–99	◐ LIKELY ACTIVE
MMMisa Metal Processing Portland, Tennessee	Portland	TN	20–99	◐ LIKELY ACTIVE
MCMission Critical Group, LLC	Brookston	IN	20–99	◐ LIKELY ACTIVE
MFMission Foods, DC Warehouse	Lakeland	FL	20–99	◐ LIKELY ACTIVE
MIMission Industries	Olympia	WA	1–19	◐ LIKELY ACTIVE
MRMission Ready Solutions LLC	Jacksonville	FL	—	◐ LIKELY ACTIVE
MAMississippi Aerospace CORP	Picayune	MS	—	◐ LIKELY ACTIVE
MIMississippi Industries for the Blind	Meridian	MS	—	◐ LIKELY ACTIVE
MMMissouri Manufacturing, INC	Blue Springs	MO	—	◐ LIKELY ACTIVE
MMitchell	Chillicothe	MO	20–99	◐ LIKELY ACTIVE
MMiTek	Hazelwood	MO	20–99	◐ LIKELY ACTIVE

FactoryRegistry lists 36,644 facilities whose primary industry classification is one of the 20 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced Heat treating of metal for the trade (heat treating, annealing, brazing, shot peening, tempering, 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 20 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 2,719 establishments reported producing it; the count for 7 of those industries was withheld.

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 2053450000. 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.