Description: Signal communication devices for indicating when a pig has passed a certain point in a pipeline; Gas and oil pipeline machines, namely, pig launchers and receivers; Metal pipe fittings, metal flanges and metal pipe connectors for the oilfield, pipeline, refining, and petrochemical industries; metal closures for pig launchers and receivers.; Pipeline maintenance and repair services for gas and oil pipelines, namely, pressure tapping, hot tapping, pipeline isolations, valve insertions, and line stop services; installation of hot taps, tapping sleeves and gate valves; technical support services, namely, providing technical advice for maintenance and repair of pipelines; rental of pipeline maintenance and repair equipment; pipeline maintenance and repair; gas pipeline maintenance services, namely, gas pipeline depressurization, and transferring of fluids from gas pipelines for emissions reduction; process vessel maintenance, namely, process vessel evacuation, process vessel depressurization, and transferring of fluids from process vessels for emissions reduction; technical consulting related to the installation of oil and gas equipment, control systems, and machinery; consulting in the field of maintenance and repair of gas and oil pipelines; Retail store services featuring pipeline maintenance and repair equipment
