- Allegan Tubular Products Inc
- American Tube Mfg
- Brendan Boroski Advertising
- Brendan Doyle Assoc
- Bull Moose Tube Co
- Bull Moose Tube Co
- Copperweld Corp
- Delta Tube Fabricating
- Delta Tube Fabricating
- Dundee Products
- Florida Tube Corp
- Goldring & Goldring LTD
- Goldring & Goldring LTD
- Hi-Mill Mfg Co
- Hi-Mill Mfg Co
- Hydraulic Tubes & Fitings Inc
- International Tube
- IPSCO Tubulars Inc
- Johnson International Ind Inc
- Koide Tennessee Inc
- LJT Texas
- LJT Texas
- Maverick C & P Inc
- Maverick Tube Corp
- Mc Clain Tube Co
- Micro-Tube Fabricators Inc
- Mid South Control Line Inc
- Midwest Tube Mills Inc
- Mueller Copper Fittings Co
- National Tube Holding Co
- Nelson Tube Div
- Paragon Tube
- Pedrazzoli USA
- Plymouth Tube
- PTC Alliance
- River Valley Machine Inc
- Timken Co
- Timken Co
- U S Wholesale Pipe & Tube Inc
- United Stainless Inc
- XLT Co
