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

• Gas Line Installation & Repairing
• Leak Detection Services
• Gas Well & Transmission Line Operators

North American Industry Classification System (NAICS) Categories:

• Support Activities For Oil And Gas Operations
• Power And Communication Line And Related Structures Construction > Gas Line Installation & Services
• Remediation Services > Gas Detection, Asbestos & Lead Contractors > Leak Detection Services

Standard Industry Classification (SIC) Categories:

• Oil & Gas Field Services, Nec > Oil Field Serv Oil & Gas Operators > Gas Well & Transmission Line Operators
• Constructing Water, Sewer, Power, & Communication Lines And Pipelines > Gas Line Installation & Services
• Special Trade Contractors, Nec > Gas Detection, Asbestos & Lead Contractors > Leak Detection Services