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Metal goods for use in drilling and completing oil and gas wells and in the production of oil and gas from wells, namely, valves, spools, and fittings connected to the top of a well

Parts of oil and gas production system, namely, gate valves, ball valves, check valves, plug valves, globe valves, spools, and pipe fittings connected to the top of a well

Oil well metal Christmas trees in the nature of an assembly of valves, spools, and fittings that control the flow of oil or gas out of a well