Engineer checks water tank valves, equipment related to hot water production pipelines.
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Engineers work inside a large steel pipe, building a tunnel for an oil, gas, and fuel pipeline.
Side view of engineer or factory technician worker team stand under petrochemical gas pipeline
Oil and gas industrial refinery at night, Oil and gas refinery petrochemical plant pipeline steel
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Bird's eye view of an oil refinery plant with storage tanks and pipeline steels during a sunset
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Oil and gas industrial refinery at night, Oil and gas refinery petrochemical plant pipeline steel
Oil and gas industrial refinery at night, Oil and gas refinery petrochemical plant pipeline steel
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Plumber, worker and man with phone call in home for pipeline problem, broken sewer and leakage main
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Two engineer or factory technician workers stand beside petrochemical gas pipeline and use tablet
Front view of factory engineer or technician worker climb up on stair of petrochemical gas pipeline
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Welder welding metal flange to connect with steel pipe for using in oil pipeline maintenance work
Engineers work inside a large steel pipe, building a tunnel for an oil, gas, and fuel pipeline.
Red fire protective water pipeline system on concrete ceiling inside of parking garage building
Oil and gas industrial refinery at night, Oil and gas refinery petrochemical plant pipeline steel
Welder welding metal flange to connect with pipe for using in oil pipeline system improvement work
Worker building pipeline system for low temperature maintenance. Preparing of outdoor skating rink
Oil and gas industrial refinery at night, Oil and gas refinery petrochemical plant pipeline steel
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Morning sunlight on surface of tents with smoke from cooking pipeline under big tree in the forest
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
Workers inside a big steel pipe building a pipeline for oil, gas, and fuel at an industrial site.
