Auxiliary boiler systems from natural gas which include stack, burner, boiler and sky in power plant. Young engineer holding helmet safety and blueprints working with gas boiler of heating system equipment in a boiler room Rotor with blades of contemporary powerful steam turbine in brightly lit workshop of equipment production plant close view Steam turbine of power generator in an industrial thermal power plant corroded resistance bars in reinforced concrete wall workers pouring wet concrete using concrete bucket. Industrial construction. Modern industrial gas boiler room equiped for heating process. Heating gas boilers, pipelines, valves. Sun flares Oil and gas processing plant with pipe line valves.Steel pipelines and valves.Oil pipeline valves in the oil and gas industry. Oil rig topside on a barge before sailing away Piles of Right Angle Rebar on the Ground at Construction Site Different types of drill bits used in the oil exploration industry and spare parts in the background, ready to use in the closed warehouse area Factory background with concrete floor, night scene. Valve refinery plant equipment for pipeline oil and gas valves at gas plant pressure safety valve selection. Refinery plant equipment for pipe line oil and gas valves at gas plant pressure safety valve selective Metal warehouse outdoor of lighting poles. Storage of metal galvanized faceted pipes with flange. 1 2 ... 5 ►