Huge chimneys emitting plumes of smoke at sunset, pollution from oil production, petrochemical industries and projects, steel pipelines and cables, oil and gas refinery in industrial area, factories and plants in Saudi Arabia
Factories and plants in Saudi Arabia, Oil and gas refinery in industrial area, Steel pipelines and cables, Petrochemical industries and projects, Pollution resulting from oil production, Huge and large warehouses, Industrial engineering and equipment
Fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Steel Pipelines and Cables, Pollution from Petroleum Production, Petrochemical Industries and Projects, Oil and Gas Refining Plant in Industrial Area, Factories and Plants in Saudi Arabia
Quality of petroleum production plants and equipment, large industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Industrial engineering and equipment, factories and plants in Saudi Arabia, oil and gas refining plant in the industrial area, steel pipelines and cables, petrochemical industries and projects, pollution resulting from oil production, large and huge warehouses
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Steel Pipes and Cables, Petrochemical Industries and Projects, Oil and Gas Refining Plant in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Oil and gas refining plant in the industrial area, petrochemical industries and projects, view of smoke from factories in the air at sunset, steel pipelines and cables, factories and plants in the Kingdom of Saudi Arabia, industrial engineering and equipment, huge and large warehouses
Pipelines and steel cables, Oil and gas refinery in the industrial area, Petrochemical industries and projects, Pollution resulting from oil production, Factories and plants in the Kingdom of Saudi Arabia, Huge and large warehouses, Industrial engineering and equipment
Industrial engineering and equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan refinery laboratories, petrochemical industries and projects, huge and large warehouses, white background
Lighting towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia, metal towers and structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
Lighting towers and metal structures at night, the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Renaissance of the Saudi National Economy, Fuel Factories and Mines in the Kingdom of Saudi Arabia, Large and Huge Warehouses and Tanks, Towers and Metal Structures, Oil and Gas Refineries, Petrochemical Industries and Projects, Petroleum Engineering Concept in the Gulf States
Quality of petroleum production plants and equipment, large industrial facilities, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Petrochemical industries and projects, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, lighting towers and metal structures at sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Metal towers and structures in desert lands, oil and gas refineries, fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy.
View of factory smoke in the air, oil production in the Kingdom, factories and plants in Saudi Arabia at sunset, industrial engineering and equipment, petrochemical industries and projects, economic growth and progress, factory smoke refinery, oil and gas refining plant, huge and large warehouses
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
The concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks in desert areas, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, gas refinery
Large and massive storage tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Large industrial facilities, quality gas production plants and equipment, pipelines and steel cables, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metallurgy and chemical industries.
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Oil and gas refinery, oil factories and plants in the middle of nature in the Kingdom of Saudi Arabia, the renaissance of the Saudi national economy, the concept of petroleum engineering in the Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Large and massive warehouses and tanks, lighting towers and metal structures at night, oil factories and laboratories in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy
Huge industrial facilities illuminated at dawn, quality of petroleum production plants and equipment, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities, oil and gas refinery
Lighting towers and metal structures in the evening, petrochemical industries and projects, oil and gas refinery, concept of petroleum engineering in the Gulf countries, renaissance of the Saudi national economy, oil factories and plants in the Kingdom of Saudi Arabia, large and large warehouses and tanks
Factories and plants in Saudi Arabia, huge and large warehouses, industrial engineering and equipment, petrochemical industries and projects, steel pipelines and cables, oil and gas refining plant in the industrial area
Large and huge warehouses and tanks, lighting towers and metal structures at sunset, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Petrochemical industries and projects, huge and large temporary storage warehouses, industrial engineering and equipment, petroleum processing in Saudi Arabia’s factories, oil and gas extraction platform in the middle of the sea, sunset view in the sky full of clouds
Quality of machinery and equipment in factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf States, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia
The renaissance of the Saudi national economy, lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, oil and gas refinery, the concept of petroleum engineering in the Gulf States, large and huge warehouses and tanks, petrochemical industries and projects
The concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, lighting towers and metal structures at sunset, large and huge warehouses and tanks, oil factories and laboratories in the Kingdom of Saudi Arabia
The field of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, the view of the sky at dusk with high illuminated structures
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Factories and laboratories of the Kingdom of Saudi Arabia in Al-Shorouk, oil and gas refining plant, Dukhan refinery, laboratories, petrochemical industries and projects, huge and large warehouses, engineering and industrial equipment.
Oil production in Saudi Arabia, view of smoke from factories in the air, huge industrial engineering, equipment and warehouses, close-up of oil and gas refinery at sunset, petrochemical industrial projects, economic growth and progress
Oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, pollution from oil production, factories and plants in Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Petrochemical industries and projects, pollution resulting from oil production, steel pipelines and cables, oil and gas refinery in the industrial area, factories and plants in the Kingdom of Saudi Arabia, large and huge warehouses, industrial engineering and equipment
Large industrial facilities for petroleum production, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, lighting towers and metal structures at dawn, large warehouses and tanks.
Giant industrial engineering and equipment, oil and gas refinery in industrial area, steel pipelines and cables, petrochemical industries and projects, large industrial complex with tall smoke chimneys in Saudi Arabia, huge and large warehouses
Oil refinery factories in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector, the quality of machinery and equipment in oil extraction factories, modern technologies in oil and gas production.
Oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Steel Pipelines and Cables, Petrochemical Industries and Projects, Pollution from Oil Production, Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Fuel factories in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Industrial engineering and equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan refinery laboratories, petrochemical industries and projects, huge and large warehouses, white background
Smoke rising from factories and polluting the environment, industrial plants in the Kingdom of Saudi Arabia, development industries contributing to the renaissance of the Saudi national economy, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Development industries contributing to the renaissance of the Saudi national economy, industrial factories in the Kingdom of Saudi Arabia, smoke rising from factories and polluting the environment, large and huge warehouses and tanks, an industrial station with towers and metal structures at sunset, reliance on local national production
Saudi national economy renaissance, lighting towers and metal structures at sunset, oil factories and plants in Saudi Arabia, oil and gas refinery, petroleum engineering concept in Gulf countries, large and huge warehouses and tanks, petrochemical industries and projects
Lighting towers and metal structures at night, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, petrochemical industries and projects, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Modern technologies in the production of oils and gas, the quality of machinery and equipment in oil extraction plants, petroleum refining plants in the Kingdom of Saudi Arabia, the concept of work in the industrial engineering sector.
Engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, towers and metal structures in desert lands
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
Smoke from huge industrial facilities, oil and gas refineries, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories and laboratories in the Kingdom of Saudi Arabia, lighting of towers and metal structures at dawn, pollution resulting from oil production
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, towers and metal structures in desert lands
Factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant in the industrial zone, pipelines and steel cables, petrochemical industries and projects, huge and large warehouses, industrial engineering and equipment.
Large and massive warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia
The concept of gas productivity in Saudi Arabia Monitoring the workflow in factories, pipelines and steel cables, a close-up shot of a group of Saudi Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects
Towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, large and huge warehouses and tanks, fuel factories and mines in the Kingdom of Saudi Arabia
Petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, oil and gas refineries, the renaissance of the Saudi national economy, the view of large and huge warehouses and tanks at sunset, oil factories and laboratories in the Kingdom of Saudi Arabia
Petrochemical industries and projects, oil and gas refinery, lighting towers and metal structures, oil factories and plants in the Kingdom of Saudi Arabia, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, large and huge warehouses and tanks
Oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the plants that extract oil wealth from the depths of the seas, the concept of petroleum engineering in the Gulf countries, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy
Oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, metal and chemical industries, oil factories in the Kingdom of Saudi Arabia, quality of oil production plants and equipment, large illuminated industrial facilities
Industrial engineering and equipment, oil and gas refining plant in industrial area, steel pipelines and cables, petrochemical industries and projects, aerial view from above of power generation and waste recycling plants in Saudi Arabia ports, huge and large warehouses
Working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia, following up on the progress of work in factories and plants, a group of Saudi Gulf Arab engineers working in an oil and gas refining plant
Oil and gas refining plant in the industrial zone, factories and laboratories in the Kingdom of Saudi Arabia, pipelines and steel cables, petrochemical industries and projects, huge and large warehouses, industrial engineering and equipment.
Extracting underground resources from the sea, oil and gas refineries in the industrial zone in Saudi Arabia, petrochemical industries and projects in the Kingdom, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, Saudi economic growth and progress
Huge industrial facilities illuminated at dawn, quality of petroleum production plants and equipment, oil and gas refinery, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, metal and chemical industries
Petrochemical industries and projects, oil and gas refineries, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
The concept of gas production in Saudi Arabia. Monitoring the workflow in factories, pipelines and steel cables. A close-up photo from the back of a Saudi Gulf Arab engineer wearing a helmet and protective vest in an oil refining plant. Working in the field of petrochemical industries and projects.
Oil refineries in Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, gas plants and refineries, the concept of petroleum engineering in the Gulf countries, lighting towers and metal structures at sunset, large and huge warehouses and tanks
Engineering development of oil refineries in Saudi Arabia, oil mines on soft golden sands, harsh and dry climate, adoption of modern technologies in oil and gas production, petrochemical industries and projects, huge and modern tools and equipment, towers and metal structures in desert lands
Work in the field of petroleum engineering, oil and gas refinery, a group of Saudi Gulf Arab workers wearing a protective suit and a protective helmet repairing machinery and equipment in oil laboratories and factories in the Kingdom of Saudi Arabia, pipelines extending from the depths of the sea to refineries.
Oil and gas refinery in the middle of sea water, petrochemical industrial projects, economic growth and progress, oil production in Saudi Arabia, view of smoke from factories in the air, engineering, equipment and huge industrial warehouses
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, large and huge warehouses and tanks, fuel factories and plants in the Kingdom of Saudi Arabia
Large and massive warehouses and tanks, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, towers and metal structures in desert lands, fuel factories and mines in the Kingdom of Saudi Arabia
Quality of petroleum production plants and equipment, steel pipelines and cables, large industrial facilities, petrochemical projects contributing to the renaissance of the Saudi national economy, oil factories in the Kingdom, metal and chemical industries, lighting towers illuminating streets and roads in Saudi Arabia
Petrochemical industrial projects, economic growth and progress, oil production in Saudi Arabia, view of smoke from factories in the air, huge industrial engineering, equipment and warehouses, close-up of oil and gas refinery at sunset
Steel Pipelines and Cables, Petrochemical Industries and Projects, Pollution from Oil Production, Oil and Gas Refinery in Industrial Area, Factories and Plants in Saudi Arabia, Large and Huge Warehouses, Industrial Engineering and Equipment
Oil refinery factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in oil extraction factories, the use of modern technologies in the production of oils and gas, the concept of work in the industrial engineering sector
Extracting underground resources from the sea, oil and gas refineries in the industrial zone in Saudi Arabia, petrochemical industries and projects in the Kingdom, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, Saudi economic growth and progress
Oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy, fuel factories and mines in the Kingdom of Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands
Work in the field of petroleum engineering, oil and gas refining plants in the industrial zone in Saudi Arabia, extracting underground resources from the sea, petrochemical industries and projects in the Kingdom, huge machines and heavy equipment used in oil exploration, Saudi economic growth and progress.
A painting of the first oil refinery in the desert of the Kingdom of Saudi Arabia, huge and modern tools and equipment, the adoption of modern techniques and technology in oil and gas production, the engineering and urban development of oil refineries
Renaissance of the Saudi national economy, an oil factory lit at night in the Kingdom of Saudi Arabia, the quality of machinery and equipment in the factories that extract oil wealth from the depths of the seas, the concept of petroleum engineering, petrochemical industries and projects
Fuel factories and mines in Saudi Arabia, large and huge warehouses and tanks, towers and metal structures in desert lands, oil and gas refineries, petrochemical industries and projects, the concept of petroleum engineering in the Gulf countries, the renaissance of the Saudi national economy
Follow up the progress of work in factories and plants, a group of Saudi Arabian Gulf engineers working in an oil and gas refining plant, working in the field of petrochemical industries and projects, steel pipelines and cables, the concept of gas productivity in the Kingdom of Saudi Arabia
Oil production in Saudi Arabia, view of smoke from factories in the air, huge industrial engineering, equipment and warehouses, close-up of oil and gas refinery at sunset, petrochemical industrial projects, economic growth and progress
Oil factories and plants in the Kingdom of Saudi Arabia, petrochemical projects contributing to the renaissance of the Saudi national economy, oil and gas refinery, the concept of petroleum engineering in the Gulf States, lighting towers and metal structures at sunset, large and huge warehouses and tanks
The concept of petroleum engineering, oil and gas refinery, petrochemical industries and projects, the renaissance of the Saudi national economy, oil factories in the Kingdom of Saudi Arabia, the quality of machinery and equipment in factories that extract oil wealth from the depths of the sea
Huge and large warehouses, engineering and industrial equipment, factories and laboratories in the Kingdom of Saudi Arabia, oil and gas refining plant, Dukhan laboratories refinery, petrochemical industries and projects, white background
Pipelines and steel equipment, factory and laboratory engineering in the industrial zone in the Kingdom of Saudi Arabia, petrochemical industries and projects, huge and large warehouses,
Quality of machinery and equipment in oil extraction plants, oil refineries at sunset in Saudi Arabia, concept of work in the industrial engineering sector, modern technologies in oil and gas production
Extracting underground resources from the sea, huge machines and heavy equipment used in oil exploration, working in the field of petroleum engineering, petrochemical industries and projects in the Kingdom, oil and gas refining plants in the industrial zone in Saudi Arabia, Saudi economic growth and progress
Petroleum engineering concept in the Gulf countries, oil factories and plants in the Kingdom of Saudi Arabia, petrochemical industries and projects, the renaissance of the Saudi national economy, an aerial view of an oil and gas refinery, large and huge warehouses and tanks, steel pipelines and cables