- Compressor, metering and pumping station, gas and oil pipeline, construction
- Construction management, oil and gas pipeline
- Construction management, oil refinery and petrochemical complex
- Corrosion protection, underground pipeline and oil storage tank
- Distribution line, gas and oil, construction
- Gas main construction
- Gathering line, gas and oil field, construction
- Natural gas pipeline construction
- Natural gas processing plant construction
- Oil and gas field distribution line construction
- Oil pipeline construction
- Oil refinery construction
- Petrochemical plant construction
- Petroleum refinery construction
- Pipe lining (except thermal insulating) contractors
- Pipeline construction on oil and gas field gathering lines to point of distribution on a contract basis
- Pipeline rehabilitation contractors
- Pipeline wrapping contractors
- Pipeline, gas and oil, construction
- Pumping station, gas and oil transmission, construction
- Refinery, petroleum, construction
- Service line, gas and oil, construction
- Storage tank, natural gas or oil, tank farm or field, construction
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