Manufacturing of sheet metal air-conditioning ducts (including dust collection ducts), stove pipe, furnace smoke pipe, and elbows

Facility	City	State	Employees	Status
B-tek Scales LLC	Canton	OH	100–499	● ACTIVE
Bull Metal Products, INC.	Middletown	CT	20–99	● ACTIVE
Bunting Magnetics CO	Newton	KS	100–499	● ACTIVE
Burger & Brown Engineering, Incorporated	Grandview	MO	20–99	● ACTIVE
Butler Weldments, LLC	Cameron	TX	20–99	● ACTIVE
Carlson Tool & Manufacturing CORP.	Cedarburg	WI	100–499	● ACTIVE
Cast Aluminum Solutions, LLC	Batavia	IL	100–499	● ACTIVE
C & C Metals Engineering INC	West Boylston	MA	20–99	● ACTIVE
Center Industries CORP	Wichita	KS	20–99	● ACTIVE
Cg Model Tek LLC	Tullahoma	TN	—	● ACTIVE
Challenge Machine and Manufacturing	Blaine	MN	20–99	● ACTIVE
Chemart Company	Lincoln	RI	—	● ACTIVE
CPCherokee Porcelain Enamel CORP	Knoxville	TN	—	● ACTIVE
Clampco Products, INC.	Wadsworth	OH	100–499	● ACTIVE
C.l. Hann Industries, INC.	Gilroy	CA	—	● ACTIVE
CJCollins & Jewell Company, INC.	Bozrah	CT	20–99	● ACTIVE
Computer Components Corporation	Philadelphia	PA	20–99	● ACTIVE
Construction Services INC	Decatur	AL	20–99	● ACTIVE
Continental Disc Corporation, LLC	Liberty	MO	100–499	● ACTIVE
Continental Maritime of San Diego, LLC	San Diego	CA	100–499	● ACTIVE
Coronet Machinery CORP.	Bethel	CT	20–99	● ACTIVE
Corry Manufacturing Company	Corry	PA	100–499	● ACTIVE
CCCreative Composites, INC.	Rapid River	MI	20–99	● ACTIVE
Custom Iron Works INC	Coventry	RI	—	● ACTIVE
Custom Laminating CORP	Mount Bethel	PA	20–99	● ACTIVE

FactoryRegistry lists 10,034 facilities whose primary industry classification is one of the 3 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced sheet metal air-conditioning ducts (including dust collection ducts), stove pipe, furnace smoke pipe, and elbows, 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 3 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 667 establishments reported producing it; the count for 1 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 2038675000. 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.