National Oilwell Varco Petrex Process Systems

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

• Oil & Gas Well Service

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec