Manufacturing of prefabricated metal building systems and portable buildings (complete units)

Facility	City	State	Employees	Status
Grain Belt Supply CO INC	Salina	KS	100–499	● ACTIVE
Great Lakes Composite, LLC	Owosso	MI	20–99	● ACTIVE
GBGuardian Booth LLC	Waynesboro	PA	—	● ACTIVE
Guardian Electric Manufacturing CO	Woodstock	IL	20–99	● ACTIVE
Gunderson Marine LLC	Portland	OR	100–499	● ACTIVE
G & W Products LLC	Fairfield	OH	100–499	● ACTIVE
HCHalkey-roberts CORP	Saint Petersburg	FL	—	● ACTIVE
Hamilton Iron Works, INC	Woodbridge	VA	20–99	● ACTIVE
Hamilton Tanks LLC	Columbus	OH	20–99	● ACTIVE
Hansen's Welding, INC.	Gardena	CA	20–99	● ACTIVE
Harbec INC	Ontario	NY	100–499	● ACTIVE
Harris Machine CO	Oakes	ND	20–99	● ACTIVE
Hawkeye Industries INC	Tupelo	MS	20–99	● ACTIVE
Henry Graphics, INC	Buford	GA	20–99	● ACTIVE
Historical Arts & Casting, INC	West Jordan	UT	20–99	● ACTIVE
Hi-tech Mold & Engineering INC	Rochester Hills	MI	100–499	● ACTIVE
Imco, INC.	Spencerport	NY	—	● ACTIVE
Imperial Ornamental Metal Co., INC.	Fenton	MO	20–99	● ACTIVE
Independent Machine CO. INC.	Escanaba	MI	20–99	● ACTIVE
Industrial Heater CORP	Cheshire	CT	20–99	● ACTIVE
Industrial Louvers INC	Delano	MN	20–99	● ACTIVE
Innovative Works INC.	Chesterfield	MI	—	● ACTIVE
Inpro CORP	Muskego	WI	500+	● ACTIVE
Iowa Rotocast Plastics INC	Decorah	IA	100–499	● ACTIVE
Ironwood Plastics, INC.	Ironwood	MI	20–99	● ACTIVE
Jade Engineered Plastics, INC	Warren	RI	20–99	● ACTIVE
J & a Manufacturing, INC.	Garland	TX	20–99	● ACTIVE
Janco Electronics INC	Rollinsford	NH	—	● ACTIVE
JSJbc Steel Products, LLC	Dallas	TX	20–99	● ACTIVE
Jered LLC	Brunswick	GA	100–499	● ACTIVE
JMJohnson Machine Works, INC.	Chariton	IA	20–99	● ACTIVE
John W. Mcdougall Co., INC.	Nashville	TN	100–499	● ACTIVE
Jpw Structural Contracting INC	Syracuse	NY	20–99	● ACTIVE
J. T. Cullen CO INC	Fulton	IL	20–99	● ACTIVE
Kastalon INC	Alsip	IL	20–99	● ACTIVE
Kaysun Corporation	Manitowoc	WI	100–499	● ACTIVE
Kern Steel Fabrication, INC.	Bakersfield	CA	20–99	● ACTIVE
King Fabrication, L.l.c.	Houston	TX	100–499	● ACTIVE
KSKing Systems Corporation	Noblesville	IN	100–499	● ACTIVE
Kinney Manufacturing LLC	Lincoln	NE	100–499	● ACTIVE
Kittyhawk INC	Garden Grove	CA	20–99	● ACTIVE
Klune Industries INC	North Hollywood	CA	100–499	● ACTIVE
Knoxville Sheet Metal Works, INC	Knoxville	TN	20–99	● ACTIVE
Komline-sanderson Group, INC.	Peapack	NJ	100–499	● ACTIVE
Ksm Industries INC	Germantown	WI	20–99	● ACTIVE
Labcon, North America	Petaluma	CA	100–499	● ACTIVE
Lakeside Plastics, INC.	Oshkosh	WI	100–499	● ACTIVE
Lamjen INC	Erie	PA	1–19	● ACTIVE
Lancer Systems LP	Quakertown	PA	20–99	● ACTIVE
Latitude CORP.	Verona	WI	100–499	● ACTIVE

FactoryRegistry lists 15,707 facilities whose primary industry classification is one of the 4 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced prefabricated metal building systems and portable buildings (complete units), 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 4 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 20 establishments reported producing it; the count for 3 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 2040088000. 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.