National Oilwell Varco

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

• Oil & Gas Producers
• Oil Field Equipment & Supplies

North American Industry Classification System (NAICS) Categories:

• Crude Petroleum And Natural Gas Extraction
• Industrial Machinery And Equipment Merchant Wholesalers > Petroleum Industry Machinery > Oil Field Equipment & Supplies

Standard Industry Classification (SIC) Categories:

• Crude Petroleum & Natural Gas > Oil & Gas Producers
• Industrial Machinery & Equipment > Petroleum Industry Machinery > Oil Field Equipment & Supplies