- Four Star Fabrication & Machne
- Innovative Steel Products
- Lauinger Steel Constr Lauinger
- Mandan Steel Fargo Tank
- Midwest Steel Structures
- Moen Steel Erections Inc
- Moen Steel Erections Inc
- National Steel Bridge Alliance
- Northern State Steel
- Ready Made Steel Products
- Trinity Steel
- Wifco Steel Products
- Wifco Steel Products