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T.D. Williamson, Inc. (TDW) was founded in Tulsa, Oklahoma, in 1920. Today, as the leading piping maintenance company, TDW designs and manufactures engineered systems for monitoring, pigging, tapping, plugging, joining, and inspecting essential piping systems, and also provides these services, whatever the needs are: Hot Tapping and Plugging of Under-Pressure Piping Systems Pigging Products Pipeline Cleaning Services KALIPER Geometry Inspection MFL In-Line Inspection (MAGPIE) Gas Leak Detection Products(GAZOMAT) Leak Repair Clamps and Composite Repair Wrap Remote controlled offshore pipeline pressure isolation service
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