Guardian

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

• Inspection Services
• Oil & Gas Well Service
• Pipe Inspection Service

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations > Oil Field & Well Testing, Measuring & Surveying > Oil Field & Well Inspection
• All Other Business Support Services > Inspection & Testing Services

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec > Oil Field & Well Testing, Measuring & Surveying > Oil Field Service Pipe Inspection
• Business Services, Nec > Inspection & Testing Services