HG

Metal goods For use in drilling and completing oil and gas wells and in the production of oil and gas from wells, namely manually operated valves, risers, riser connectors, pipeline connectors, jumper connectors, metal to metal seals, high pressure seals, geothermal wellheads, subsea connectors and wellhead connectors

Metal goods for use in drilling and completing oil and gas wells and in the production of oil and gas from wells, namely, wellheads, Christmas trees, and valves, namely, wellhead valves, Christmas tree valves, and mechanically operated valves

Construction, installation and maintenance services relating to oil and gas well structures

Design services for others relating to oil and gas well structures