Heat treating of metal for the trade

Facility	City	State	Employees	Status
MLMain Location	Reedsburg	WI	20–99	◐ LIKELY ACTIVE
MMMain Machine Co., INC.	Ronkonkoma	NY	—	◐ LIKELY ACTIVE
MOMain Office	Oriskany	NY	20–99	◐ LIKELY ACTIVE
MOMain Office	Eden Valley	MN	20–99	◐ LIKELY ACTIVE
MOMain Office - 01	Wheeling	IL	500+	◐ LIKELY ACTIVE
MPMain Plant	Monett	MO	20–99	◐ LIKELY ACTIVE
MPMain Plant	Sidney	OH	20–99	◐ LIKELY ACTIVE
MSMain Shop	Diana	TX	20–99	◐ LIKELY ACTIVE
MSMain Shop	Huntington	WV	20–99	◐ LIKELY ACTIVE
MSMain Street	Clarence	NY	100–499	◐ LIKELY ACTIVE
MSMain Street	Fridley	MN	100–499	◐ LIKELY ACTIVE
MSMaintenance Service & Sales Corporation	Bordentown	NJ	—	◐ LIKELY ACTIVE
MEMaitland Engineering Inc. Bldg#2	South Bend	IN	20–99	◐ LIKELY ACTIVE
MMMakerite Manufacturing Co, Inc.	Roscoe	IL	1–19	◐ LIKELY ACTIVE
MMMamco Machining, INC.	Maryville	IL	—	◐ LIKELY ACTIVE
MTManchester Tool and Die, INC	North Manchester	IN	20–99	◐ LIKELY ACTIVE
MIMancor Indiana	Anderson	IN	20–99	◐ LIKELY ACTIVE
MCMann CO Machine Works LLC	Lancaster	CA	—	▲ REPORTED CLOSED
MMMann Metal Finishing, Inc.	Hartford	MI	20–99	◐ LIKELY ACTIVE
MManth-Brownell	Kirkville	NY	20–99	◐ LIKELY ACTIVE
MMManth Mfg.	Tonawanda	NY	20–99	◐ LIKELY ACTIVE
MManufacturing	Berlin	CT	20–99	◐ LIKELY ACTIVE
MMManufacturing Main Location	Villa Rica	GA	20–99	◐ LIKELY ACTIVE
MSManufacturing Shop	Hodgkins	IL	20–99	◐ LIKELY ACTIVE
MSManufacturing Support	Warren	MI	1–19	◐ LIKELY ACTIVE
MTManufacturing Technologies, INC.	Bernalillo	NM	—	◐ LIKELY ACTIVE
MMManzke Machine, INC	Escondido	CA	—	◐ LIKELY ACTIVE
MFMapleton Foundry	Mapleton	IL	500+	◐ LIKELY ACTIVE
MWMaple Wood Manufacturing Co., INC.	Fall River	MA	—	◐ LIKELY ACTIVE
MTMara Technologies USA Inc.	Holly	MI	100–499	◐ LIKELY ACTIVE
MMMarathon Machining & Tool, INC.	Hilton Head Island	SC	—	◐ LIKELY ACTIVE
MTMarathon Technologies, INC	Estero	FL	—	◐ LIKELY ACTIVE
MPMarblehead Plant	Marblehead	OH	20–99	◐ LIKELY ACTIVE
MPMarchant Powder Coating INC.	Goose Creek	SC	—	▲ REPORTED CLOSED
MSMarchant Schmidt	Fond Du Lac	WI	20–99	◐ LIKELY ACTIVE
MIMarco Industries	Tulsa	OK	100–499	◐ LIKELY ACTIVE
MTMar-con Tool Company	Dayton	OH	—	◐ LIKELY ACTIVE
MMarietta	Marietta	GA	1–19	◐ LIKELY ACTIVE
MLMarine Lumber & Decking Supplies LLC	Naples	FL	1–19	◐ LIKELY ACTIVE
MMMaring Machining & Engineering LLC	Lafayette	CO	—	◐ LIKELY ACTIVE
MWMarino \ WARE	South Plainfield	NJ	100–499	◐ LIKELY ACTIVE
MIMarion, IL	Marion	IL	20–99	◐ LIKELY ACTIVE
MIMarion I.S. Services	Marion	IN	20–99	◐ LIKELY ACTIVE
MMMarion Machine	Marion	NC	20–99	◐ LIKELY ACTIVE
MMMarion Manufacturing, Inc.	Marion	KS	20–99	◐ LIKELY ACTIVE
MPMarion Precision Tool, INC.	Ocala	FL	—	◐ LIKELY ACTIVE
MWMarion Worthey	Paint Rock	AL	—	◐ LIKELY ACTIVE
MEMarkovitz Enterprises	Zelienople	PA	20–99	◐ LIKELY ACTIVE
MIMark.us Industry INC	Wharton	NJ	—	◐ LIKELY ACTIVE
MMMar Machine INC	West Babylon	NY	—	◐ LIKELY ACTIVE
MIMar-Mac Industries, Inc.	Mcbee	SC	20–99	◐ LIKELY ACTIVE
MUMarmon Utility - Amherst	Amherst	NH	20–99	◐ LIKELY ACTIVE
MMMarposa Manufacturing	Waltham	MA	—	◐ LIKELY ACTIVE
MMarrero	Marrero	LA	20–99	◐ LIKELY ACTIVE
MLMarrick, LLC	Portsmouth	VA	—	◐ LIKELY ACTIVE
MMMarsam Metalfab Inc -ENTERPRISE-	Twinsburg	OH	20–99	◐ LIKELY ACTIVE
MMMarsam Metalfab Inc -TOWER-	Twinsburg	OH	20–99	◐ LIKELY ACTIVE
MFMartin Fiala	Salem	WI	—	◐ LIKELY ACTIVE
MHMartin & Hattie Rasche	Grand Rapids	MI	20–99	◐ LIKELY ACTIVE
Martin & Rush Machining Inc. DBA: Phoenix Precision Machining	Trinity	NC	20–99	◐ LIKELY ACTIVE
MMMary Mendenhall	York	PA	20–99	◐ LIKELY ACTIVE
MIMason Industries Inc	Hauppauge	NY	100–499	◐ LIKELY ACTIVE
MMMason Manufacturing, LLC	Decatur	IL	20–99	◐ LIKELY ACTIVE
MBMaster Builders & Erectors CORP	Folcroft	PA	—	◐ LIKELY ACTIVE
MFMaster Finish Company	Grand Rapids	MI	20–99	◐ LIKELY ACTIVE
MEMasterGrind EDM II	Jamestown	NY	20–99	◐ LIKELY ACTIVE
MAMasterpiece Arms Holding Company	Comer	GA	20–99	◐ LIKELY ACTIVE
MRMaster Roll Manufacturing	New Carlisle	IN	20–99	◐ LIKELY ACTIVE
MMasury	Masury	OH	20–99	◐ LIKELY ACTIVE
MSMaterial Sciences Corporation	Walbridge	OH	20–99	◐ LIKELY ACTIVE
MAMaterion - Albuquerque (Mesa del Sol)	Albuquerque	NM	20–99	◐ LIKELY ACTIVE
MLMaterion - Leesport	Leesport	PA	100–499	◐ LIKELY ACTIVE
MVMathews Ventures LLC	Centerton	AR	—	▲ REPORTED CLOSED
MTMathew Thomas Wilkinson	Chatsworth	CA	—	◐ LIKELY ACTIVE
MCMatlab Corporate Office	Asheboro	NC	1–19	◐ LIKELY ACTIVE
MIMatlab, Inc. Plant 10	Ramsuer	NC	1–19	◐ LIKELY ACTIVE
MIMatlab, Inc. Plant 16	Greensboro	NC	1–19	◐ LIKELY ACTIVE
MIMatlab Inc. Plant 3	Asheboro	NC	1–19	◐ LIKELY ACTIVE
MMMatlab Maintenance	Asheboro	NC	1–19	◐ LIKELY ACTIVE
MCMatrix Capital LLC	Stafford	VA	—	◐ LIKELY ACTIVE
MSMatthew Scott Sammons	Park Falls	WI	—	◐ LIKELY ACTIVE
MWMatthew Warren, INC	Addison	IL	—	◐ LIKELY ACTIVE
MSMatthias Schneider	Menomonee Falls	WI	—	◐ LIKELY ACTIVE
MPMattoon Precision Manufacturing, Inc.	Mattoon	IL	100–499	◐ LIKELY ACTIVE
MIMatzel Industries INC	Milwaukee	WI	—	◐ LIKELY ACTIVE
MPMaudlin Products	Kemah	TX	20–99	◐ LIKELY ACTIVE
MMMaul Mfg., INC.	Santa Ana	CA	—	◐ LIKELY ACTIVE
MIMavco Industries INC	Lawrenceburg	KY	—	◐ LIKELY ACTIVE
MEMaven Engineering Corporation	Anaheim	CA	—	◐ LIKELY ACTIVE
MSMaverick Steel Group, LLC	Hendersonville	NC	—	◐ LIKELY ACTIVE
MMaxcess-Fife	Oklahoma	OK	100–499	◐ LIKELY ACTIVE
MPMaxima Precision, INC.	Wichita	KS	—	▲ REPORTED CLOSED
MIMaximum Industries, INC.	Irving	TX	—	◐ LIKELY ACTIVE
MIMaximus Industries Corporation	Lafayette	IN	20–99	◐ LIKELY ACTIVE
MPMaxpol Precision Machining, INC.	Morgan Hill	CA	—	◐ LIKELY ACTIVE
MBMaxsteel Buildings	Columbus	GA	1–19	◐ LIKELY ACTIVE
MBMaxsteel Buildings Murfreesboro	Murfreesboro	TN	20–99	◐ LIKELY ACTIVE
MIMay Industries of Ohio, Inc	N Royalton	OH	20–99	◐ LIKELY ACTIVE
MCMaysteel Colorado, LLC	Frederick	CO	20–99	◐ LIKELY ACTIVE
MPMaysteel Porters Garland Texas	Garland	TX	100–499	◐ 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.