Manufacturing of weldments and fabricated steel plate for…

Facility	City	State	Employees	Status
OFOlson Fabrication, Inc.	Algoma	WI	20–99	◐ LIKELY ACTIVE
OTOlson Tool & Plastics, Inc.	Chaska	MN	20–99	◐ LIKELY ACTIVE
OCOlympia Chimney and Venting	Pittston	PA	100–499	◐ LIKELY ACTIVE
OTOlympian Tool LLC	Saint Johns	MI	20–99	◐ LIKELY ACTIVE
OWOlympic Water Jet LLC	Poulsbo	WA	—	◐ LIKELY ACTIVE
OCOMAMP Contech Engineered Solutions LLC	Wahoo	NE	1–19	◐ LIKELY ACTIVE
OSOMCO Solar	Madison	AL	20–99	◐ LIKELY ACTIVE
OIOmega Ii., INC.	Chula Vista	CA	—	◐ LIKELY ACTIVE
OSOmega Steel, Inc.	Bloomingdale	GA	20–99	◐ LIKELY ACTIVE
OBOMG Building Products LLC	Agawam	MA	500+	◐ LIKELY ACTIVE
OMOmni Manufacturing INC.	St.Marys	OH	20–99	◐ LIKELY ACTIVE
OOmnimax	Duluth	GA	20–99	◐ LIKELY ACTIVE
OSOmniroot Spc	Seattle	WA	—	◐ LIKELY ACTIVE
OIOMS Indianapolis	Indianapolis	IN	20–99	◐ LIKELY ACTIVE
OOMS-Kingsport	Kingsport	TN	1–19	◐ LIKELY ACTIVE
OMO'Neal Manufacturing Services	Burlington	KY	20–99	◐ LIKELY ACTIVE
OMO'Neal Manufacturing Services	Fayette	AL	20–99	◐ LIKELY ACTIVE
OSOne Source Manufacturing Headquarters	Leander	TX	100–499	◐ LIKELY ACTIVE
Ong Group LLC	Hamilton	OH	—	◐ LIKELY ACTIVE
OMOntario Mechanical LLC	Mansfield	OH	20–99	◐ LIKELY ACTIVE
OPO P a Industries, LLC	Woods Cross	UT	—	◐ LIKELY ACTIVE
ODOperation Dawsonville GA	Dawsonville	GA	100–499	◐ LIKELY ACTIVE
ODOperations Detroit Lakes MN	Detroit Lakes	MN	100–499	◐ LIKELY ACTIVE
OLOperations Lakeville MN	Lakeville	MN	100–499	◐ LIKELY ACTIVE
OWOperations Washington IL	Washington	IL	100–499	◐ LIKELY ACTIVE

FactoryRegistry lists 33,637 facilities whose primary industry classification is one of the 15 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced weldments and fabricated steel plate for construction and mining, 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 15 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 1,993 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 2035125000. 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.