Company Information: T.D. Williamson, Inc. (TDW) was founded in Tulsa, Oklahoma, in 1920 as an electrical contracting firm serving the emerging petroleum industry s needs for power. With over 55 locations worldwide, including offices in Canada, United States, Singapore, India, Norway, Belgium, TDW is the premier pressurized piping maintenance company in the oil and gas industry. We design and manufacture engineered solutions for monitoring, pigging, tapping, plugging, and inspecting essential pi
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