National Oilwell Varco

National Oilwell Varco is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Oil & Gas Well Service
• Oil Field Equipment & Supplies
• Valves & Fittings

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations
• Industrial Machinery And Equipment Merchant Wholesalers > Petroleum Industry Machinery > Oil Field Equipment & Supplies
• Industrial Supplies Merchant Wholesalers > Valves, Fittings & Gears > Valves & Fittings

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec
• Industrial Machinery & Equipment > Petroleum Industry Machinery > Oil Field Equipment & Supplies
• Industrial Supplies > Valves, Fittings & Gears > Valves & Fittings