Southwest Machine Works
Southwest Valve, Inc.
Space City Distribution, Inc.
Special Piping Materials
Specialty Equipment Company
Stainless Tubular Products, LLC (STP)
Starflex America, Inc.
Steelhead Tubular
Strahman Group
Stream-Flo Industries
STS Industrial, Inc.
Sunbelt Supply
Sunbelt Supply 2
Superior Valves
Swepco Tube, LLC
Swift Oilfield Supply - Canada
Ta Chen International, Inc.
Taylor Valve Technology
Teadit
TEX-FIN, Inc.
Tex Tube
Texas Pipe & Supply
The Phoenix Forge Group
Thomas Supply & Distribution
Tiger Valve Company
Tioga Pipe
Toolpushers Supply Co.
TPC Industrial LLC
Trace Applications Inc.
Tubacero
Tubacex America Inc
Tube Forgings of America, Inc.
TWC the Valve Company
Twinco Industrial Products
Tylok Fittings & Valves
US Alloys, Inc.
U. S. Metals
Unified Alloys
Union Tech
United Titanium Inc.
Valero Energy
Vallourec Usa Corp.
Valmet
Valve Source, Inc.
Valves Unlimited Inc.
Valv Technologies
Valvosider
Van Leeuwen Pipe and Tube
Velan
Venus Pipes and Tubes Limited
Victaulic
Viega LLC
Vinlong Industrial Corporation
Vogt Valves Inc.
Ward Manufacturing
Webco Industries, Inc.
Weldbend Corporation, The