[ power-operated pumps and pump equipment for use in oilfield equipment and service; namely, triplex mud pumps, duplex mud pumps, rod pumps, hydraulic reciprocating pumps, hydraulic jet pumps, sucker rods, well service pumps and plunger pumps; ] oilwell drilling machinery and parts therefor; namely, [ drawworks, torque converters, rotaries, ] swivels, traveling blocks, hook blocks, and crown blocks [ drill pipe, tubulars, pedestal cranes, jacking and drilling manifolds; power-operated oil wellhead and well completion equipment; namely, wellheads, slips, casing hangers, tubing hangers, completion risers, drilling risers, production trees, through-bore trees, production manifolds and injection manifolds; valves for use with oil field drilling and production machinery; namely, gate valves, block valves, safety valves, pneumatic actuated valves and hydraulic actuated valves, all made of steel and used in oil wellhead completion equipment; valves for use with oil field drilling and production machinery; namely, ball valves, check valves, throttle valves and diverter valves, all made of steel and used in oilwell fluid control production systems ]