Heat treating of metal for the trade

Facility	City	State	Employees	Status
LALos Angeles Boiler Works Inc.	Blackwell	OK	20–99	◐ LIKELY ACTIVE
LILouis Industries INC	Paynesville	MN	20–99	◐ LIKELY ACTIVE
LILowell INC	Minneapolis	MN	—	◐ LIKELY ACTIVE
LMLowrance Machine Shop	Houston	TX	20–99	◐ LIKELY ACTIVE
LSL & S Metals, Inc.	North Tonawanda	NY	20–99	◐ LIKELY ACTIVE
LTL & T Precision, LLC	Poway	CA	—	◐ LIKELY ACTIVE
LSLucey Ssp, LLC	Chattanooga	TN	—	◐ LIKELY ACTIVE
LMLudlow Manufacturing Inc.	Waukegan	IL	20–99	◐ LIKELY ACTIVE
LTLudlow Tool INC	Agawam	MA	—	◐ LIKELY ACTIVE
LCLund Custom Machining, INC	Shelton	WA	—	◐ LIKELY ACTIVE
LWL & W Engineering-axis	Britton	MI	—	◐ LIKELY ACTIVE
LSLyle Signs INC	De Smet	SD	—	◐ LIKELY ACTIVE
LMLyons Machine Tool Co., INC.	Saint Augustine	FL	1–19	◐ LIKELY ACTIVE
LTLyons Tool & Engineering INC	Warren	MI	—	◐ LIKELY ACTIVE
MEMac Engineering & Equipment Co., Inc.	Benton Harbor	MI	20–99	◐ LIKELY ACTIVE
MIMac Industrial Holdings LLC	Mount Vernon	IN	—	◐ LIKELY ACTIVE
MVMackinaw Valley Powder Coating	Mackinaw	IL	—	◐ LIKELY ACTIVE
MTMacom Technology Solutions INC.	Morgan Hill	CA	—	◐ LIKELY ACTIVE
MMMadison Metal Processing	Madison	AL	20–99	◐ LIKELY ACTIVE
MTMadison Tool Incorporated	Madison	IN	20–99	◐ LIKELY ACTIVE
MIMadix Inc - Eclectic	Eclectic	AL	500+	◐ LIKELY ACTIVE
MMMadsen Machine Company, INC.	Tuscaloosa	AL	1–19	◐ LIKELY ACTIVE
MIMae-eitel, INC	Orwigsburg	PA	20–99	◐ LIKELY ACTIVE
MPMagic Plastics INC	Valencia	CA	20–99	◐ LIKELY ACTIVE
MMMagna Machine CO.	Cincinnati	OH	—	◐ LIKELY ACTIVE
MCMagnetic Component Engineering	Torrance	CA	20–99	◐ LIKELY ACTIVE
MMMagnum Magnetics Corporation	Marietta	OH	—	◐ LIKELY ACTIVE
MPMagnus Precision Manufacturing INC.	Phelps	NY	20–99	◐ LIKELY ACTIVE
MPMain Plant	Fort Worth	TX	20–99	◐ LIKELY ACTIVE
MMMal-ber Manufacturing CO.	Huntingdon Valley	PA	1–19	◐ LIKELY ACTIVE
MMMallory Metal Products INC	Santa Teresa	NM	—	▲ REPORTED CLOSED
MSMancor Sc Incorporated	Lugoff	SC	100–499	◐ LIKELY ACTIVE
MManitex	Georgetown	TX	—	◐ LIKELY ACTIVE
MTManor Tool & Mfg CO	Schiller Park	IL	20–99	◐ LIKELY ACTIVE
MIMantissa Industries INC	Holt	MI	—	◐ LIKELY ACTIVE
MAManufacturing Albert Lea	Albert Lea	MN	20–99	◐ LIKELY ACTIVE
MPMapsco Plant 2	Seattle	WA	—	◐ LIKELY ACTIVE
MTMarca Technologies LLC	Gorham	ME	—	◐ LIKELY ACTIVE
MAMarine Associates	Hudson	WI	20–99	◐ LIKELY ACTIVE
MRMarine & Restaurant Fabricators, INC.	San Diego	CA	—	◐ LIKELY ACTIVE
MTMarlan Tool	Meadville	PA	1–19	◐ LIKELY ACTIVE
MCMaroney Company, LLC	Northridge	CA	—	◐ LIKELY ACTIVE
MAMartec Aviation LLC	Hialeah	FL	—	◐ LIKELY ACTIVE
MMMartens Machine Shop LLC	Fairview	OK	20–99	◐ LIKELY ACTIVE
MMMartin's Metal Fabrication & Welding, INC	Vacaville	CA	—	◐ LIKELY ACTIVE
MSMartin Sprocket & Gear GA	Scottdale	GA	20–99	◐ LIKELY ACTIVE
MSMartin Sprocket & Gear Sacramento	Sacramento	CA	20–99	◐ LIKELY ACTIVE
MRMason Road Sheet Metal	Houston	TX	100–499	◐ LIKELY ACTIVE
MPMass Precision INC	Fremont	CA	—	◐ LIKELY ACTIVE
MCMaster Chrome Service (1318001715)	Cleveland	OH	—	◐ LIKELY ACTIVE
MMMaster Machine Works INC	Spartanburg	SC	20–99	◐ LIKELY ACTIVE
MMMaster Metal Polishing CORP	Paterson	NJ	—	◐ LIKELY ACTIVE
MMMaster Model Craft, INC.	Bristol	TN	—	◐ LIKELY ACTIVE
MMMathison Manufacturing	Waukesha	WI	20–99	◐ LIKELY ACTIVE
MCMauser Container Services	Blacklick	OH	—	◐ LIKELY ACTIVE
MSMaxed Sandblasting and Coating Specialists LLC	Indianapolis	IN	—	◐ LIKELY ACTIVE
MWMaxwell Welding & Machine	Burgettstown	PA	20–99	◐ LIKELY ACTIVE
MPMayes Powder Coating LLC	Whiteland	IN	—	◐ LIKELY ACTIVE
MEMayville Engineering Company CO INC - Beaver Dam - Phoenix Coaters West	Beaver Dam	WI	—	◐ LIKELY ACTIVE
MCMazak CORP	Elsmere	KY	—	◐ LIKELY ACTIVE
MFMccann Fabrication	New Gloucester	ME	—	◐ LIKELY ACTIVE
MSMccorvey Sheet Metal Works, L.p.	Houston	TX	—	◐ LIKELY ACTIVE
MMMcelroy Manufacturing Incorporated	Tulsa	OK	—	◐ LIKELY ACTIVE
MAMcgill Airclean LLC	Columbus	OH	20–99	◐ LIKELY ACTIVE
MCMCIMP Contech Engineered Solutions LLC	Topeka	KS	1–19	◐ LIKELY ACTIVE
MCMcKee Carbide Tool Company	Olanta	PA	1–19	◐ LIKELY ACTIVE
Mclaughlin Body CO	Rock Island	IL	—	◐ LIKELY ACTIVE
MMMcleod Machine Works, INC.	Beaumont	TX	20–99	◐ LIKELY ACTIVE
MMMcswain Manufacturing LLC	Cincinnati	OH	—	◐ LIKELY ACTIVE
MDMcwane Ductile	Provo	UT	100–499	◐ LIKELY ACTIVE
MDMcwane Ductile	Coshocton	OH	500+	◐ LIKELY ACTIVE
MDM & D Coating	Millington	TN	—	◐ LIKELY ACTIVE
MPMechanical Precision INC	Flemington	NJ	—	◐ LIKELY ACTIVE
MMMEC - Mayville North	Mayville	WI	20–99	◐ LIKELY ACTIVE
MWMec Wayland	Wayland	MI	20–99	◐ LIKELY ACTIVE
MCMedical Component Specialists INC.	Providence	RI	—	◐ LIKELY ACTIVE
MPMedina Plating CORP	Medina	OH	—	◐ LIKELY ACTIVE
MSMeggitt Safety Systems INC	Simi Valley	CA	—	▲ REPORTED CLOSED
MIMel-co-ed INC.	Pawtucket	RI	—	◐ LIKELY ACTIVE
MEM & E Mfg. Co., INC.	Kingston	NY	20–99	◐ LIKELY ACTIVE
MCMEMMP Contech Engineered Solutions LLC	Walnut Ridge	AR	1–19	◐ LIKELY ACTIVE
MAMena Aircraft Painting	Mena	AR	—	◐ LIKELY ACTIVE
MMMennie Machine CO	Mark	IL	100–499	◐ LIKELY ACTIVE
MEMeridian Equipment, INC.	Houston	TX	20–99	◐ LIKELY ACTIVE
MTMerrill Tool & Water Jet, LLC	Merrill	WI	20–99	◐ LIKELY ACTIVE
MPMeschkat Precision Machining, INC.	Santa Clarita	CA	—	◐ LIKELY ACTIVE
MBMetal Building Components	Rome	NY	—	◐ LIKELY ACTIVE
MIMetalcraft Industries, INC.	Westminster	CO	20–99	◐ LIKELY ACTIVE
MNMetalex North	Libertyville	IL	—	◐ LIKELY ACTIVE
MFMetal Fab Crib	Wichita	KS	1–19	◐ LIKELY ACTIVE
MMMetalfab Manufacturing, INC	Mio	MI	—	◐ LIKELY ACTIVE
MMMetalfab Material Handling Systems, LLC	Vernon	NJ	1–19	◐ LIKELY ACTIVE
MFMetal Finishing CO. INC.	Wichita	KS	100–499	◐ LIKELY ACTIVE
MFMetal Finishing Industries, INC.	Greensburg	PA	—	◐ LIKELY ACTIVE
MFMetal Finishing Marketer, INC.	Los Angeles	CA	—	◐ LIKELY ACTIVE
MFMetal Finishing Technology	Muskegon	MI	—	◐ LIKELY ACTIVE
MFMetal Forming INC	Belle Plaine	KS	—	◐ LIKELY ACTIVE
MMetalfx	Willits	CA	100–499	◐ LIKELY ACTIVE
MIMetal Improvement Company, LLC. - Phoenix	Phoenix	AZ	20–99	◐ LIKELY ACTIVE
MPMetallic Products	Houston	TX	20–99	◐ LIKELY ACTIVE

FactoryRegistry lists 36,628 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.