UK AND IRELAND
- Steel Beams and Columns Ltd
- National Tube Stockholders Ltd
- John Bell Pipeline Equipment Co Ltd
- Process and Instrumentation Valves Ltd
- Cleveland Steel and Tubes Ltd
USA
- National Tube Supply Co Inc.
- Chicago, Illiois
- Houston, Texas
- Moreno Valley, California
- Beckley, West Virginia
- Pipe and Tube Supplies Inc.
CANADA
EUROPE
Italy
- Sicam SpA
- Sicam Centro SpA
- Tubifal Srl
- Tubindustria Srl
- TPS Srl
France
- STAD S.A.
- Distritube S.A.
- Sottomet S.A.
- Sottomet S.A.
Netherlands
- Ropa Staal BV
EUROPE
Germany
- Deurohr Handels GmbH
- RAMKO Rohrhandels GmBH
Denmark
- Nordisk Rør OG Stål A/S
Sweden
- SWEA Rör & Stål AB
Spain
- Proveedora de Tubos Occidental SL
- Madrid
- Vittora
- Tarragona
