MRC Global Inc., through its subsidiaries, distributes pipes, valves, fittings, and other infrastructure products and services in the United States and internationally. The company offers ball, butterfly, gate, globe, check, diaphragm, needle, and plug valves; other products, such as lined corrosion resistant piping systems, control valves, valve automation, and top work components; and valve modification services, including valve control extensions, welding, hydrotesting, painting, coating, x-raying, and actuation assembly. It also provides carbon steel fittings and flanges comprising carbon weld fittings, flanges, and piping components; stainless steel, alloy and corrosion resistant pipes, tubing, fittings, and flanges; and carbon line pipes. In addition, the company offers natural gas distribution products, including risers, meters, polyethylene pipes and fittings, and various other components and industrial supplies; oilfield and industrial supplies and completion equipment, such as high density polyethylene pipes, fittings, and rods; and specialized production equipment comprising tanks and separators.