South Korea Air Separation Unit Market Overview, 2031

South Korea Air Separation Unit Market Insights

Industry Ecosystem
South Korea's Air Separation Unit (ASU) market is supported by a highly advanced industrial ecosystem centered around semiconductors, petrochemicals, steel, shipbuilding, healthcare, and electronics manufacturing. The market is dominated by major industrial gas suppliers including Linde Korea, Air Liquide Korea, DIG Airgas (Daesung Industrial Gases), SK Materials Airplus, and Messer Korea, which operate production facilities near major industrial clusters such as Ulsan, Yeosu, Pohang, Incheon, Pyeongtaek, and Gumi.
According to the research report, " South Korea Air Separation Unit Market Overview, 2031," published by Bonafide Research, the South Korea Air Separation Unit market is anticipated to add to more than USD 33.33 Million by 2026–31. The country's petrochemical complexes in Ulsan and Yeosu, operated by companies including SK Energy, LG Chem, Lotte Chemical, and GS Caltex, generate significant demand for oxygen and nitrogen. The steel industry, led by POSCO and Hyundai Steel, remains another major consumer, with POSCO's Pohang and Gwangyang steelworks requiring continuous oxygen supply for blast furnace and steel refining operations.
According to the World Steel Association, South Korea produced approximately 63 million tonnes of crude steel in 2024, maintaining strong demand for large cryogenic ASUs. Semiconductor expansion by Samsung Electronics, SK Hynix, and DB HiTek between 2023 and 2025 has increased demand for ultra-high-purity nitrogen used in wafer fabrication. A country-specific challenge is limited land availability near major industrial zones, making expansion of new ASU facilities more complex and increasing reliance on highly optimized on-site plants.



Pricing Analysis
Air Separation Unit pricing in South Korea is influenced by electricity costs, imported precision equipment, industrial demand, and advanced purity requirements from semiconductor manufacturers. Small non-cryogenic oxygen generation systems generally require investments between KRW 1 billion and KRW 8 billion, while large cryogenic ASUs serving steel mills, petrochemical complexes, and semiconductor facilities can exceed KRW 100 billion. According to the Korea Electric Power Corporation (KEPCO), industrial electricity prices averaged approximately KRW 150–180 per kWh during 2024, with energy costs remaining a major operating consideration because electricity contributes nearly 40% of ASU operating expenses. Equipment costs increased by approximately 8–12% between 2022 and 2024 due to higher prices for compressors, stainless steel equipment, automation systems, and imported components from Germany, Japan, and the United States. Companies including Linde Korea, Air Liquide Korea, and DIG Airgas are investing in energy-efficient compressors, automated control systems, and digital monitoring platforms to improve reliability. Long-term supply agreements with Samsung Electronics, SK Hynix, POSCO, and LG Chem support stable revenue models for dedicated ASU facilities.

Import–Export Analysis
South Korea has a strong industrial equipment manufacturing base but continues importing selected high-precision ASU components such as cryogenic valves, turbo-expanders, advanced sensors, and control systems from Germany, Japan, the United States, and Switzerland. At the same time, Korean industrial gas companies and equipment manufacturers supply technologies and services to overseas markets, particularly in Southeast Asia, the Middle East, and China. Major logistics hubs including the Port of Busan, Port of Ulsan, Port of Incheon, and Port of Gwangyang support transportation of industrial equipment and cryogenic systems. According to the Korea International Trade Association (KITA), South Korea's exports exceeded USD 680 billion in 2024, supported strongly by semiconductors, electronics, and industrial machinery. The country's advanced manufacturing supply chain enables efficient domestic integration of ASU systems. However, a unique market friction point is the dependence on imported ultra-precision components for advanced ASU automation and semiconductor-grade gas production, which can create supply risks during international trade disruptions.

Market Dynamics

Driver
South Korea's semiconductor and advanced manufacturing expansion is the strongest driver for the ASU market. Companies including Samsung Electronics and SK Hynix announced large-scale semiconductor investments between 2023 and 2025, including expansion projects in Pyeongtaek, Yongin, and Icheon, increasing demand for ultra-high-purity nitrogen. In parallel, steel production by POSCO and petrochemical investments by LG Chem and Lotte Chemical continue supporting demand for oxygen and nitrogen from large cryogenic ASUs.

Challenge
High electricity dependency and limited industrial land availability remain key challenges for South Korea's ASU market. Cryogenic ASUs require continuous power supply, and fluctuations in energy prices directly affect operating costs. Additionally, dense industrial development around cities such as Ulsan, Incheon, and Seoul metropolitan areas creates constraints for building new large-scale ASU facilities, requiring companies to optimize existing plants or develop integrated supply models.

Trend
The South Korean ASU market is moving toward semiconductor-grade gas production, digitalized operations, and integration with hydrogen projects. Industrial gas companies are adopting AI-based monitoring, predictive maintenance, and remote plant management technologies to improve efficiency. Growing investment in green hydrogen, fuel cells, and carbon reduction projects by companies such as SK E&S, Hyundai Motor Group, and POSCO is expected to create additional demand for oxygen and nitrogen infrastructure between 2025 and 2030.

Regulatory Framework

South Korea's Air Separation Unit industry is regulated through industrial safety, environmental, and chemical management frameworks administered by the Ministry of Trade, Industry and Energy (MOTIE), Ministry of Environment (MOE), and Korea Occupational Safety and Health Agency (KOSHA). Cryogenic facilities and pressure equipment must comply with the High-Pressure Gas Safety Control Act, which governs manufacturing, storage, transportation, and operation of industrial gases. Environmental requirements are managed under the Clean Air Conservation Act and the Framework Act on Carbon Neutrality and Green Growth, introduced in 2022 to support South Korea's carbon neutrality target by 2050. Semiconductor and electronics facilities using high-purity gases must also comply with strict chemical safety requirements under the Chemical Substances Control Act. Between 2023 and 2025, government support for semiconductor manufacturing, hydrogen technology, and industrial decarbonization encouraged investment in advanced ASU systems. However, regulatory compliance costs remain high due to strict safety inspections and environmental standards, particularly for facilities located near densely populated industrial areas.

Segment Analysis

By Process
Cryogenic technology dominates South Korea's ASU market because steel plants, petrochemical complexes, semiconductor facilities, and hydrogen projects require continuous supplies of high-purity oxygen, nitrogen, and argon. Companies including Linde Korea, Air Liquide Korea, DIG Airgas, and SK Materials Airplus operate large cryogenic plants near industrial clusters in Ulsan, Yeosu, Pohang, and Pyeongtaek. Non-cryogenic systems, especially PSA oxygen generation units, are increasingly adopted in hospitals, smaller manufacturing facilities, and specialized industrial applications where lower capital investment and operational flexibility are required.

By End Use
Chemicals and petrochemicals represent a major end-use segment due to large complexes operated by LG Chem, Lotte Chemical, SK Energy, and GS Caltex. Iron and steel demand remains significant through POSCO and Hyundai Steel, which require oxygen for steel production. Healthcare demand continues through modernization of hospital infrastructure and medical oxygen systems. The semiconductor sector has become increasingly important, with Samsung Electronics and SK Hynix requiring ultra-high-purity nitrogen for wafer fabrication and advanced semiconductor processes. The food and beverage industry uses nitrogen for packaging and preservation, while the "Others" segment includes shipbuilding, aerospace, battery manufacturing, and hydrogen projects.

By Gas
Nitrogen represents the fastest-growing gas segment in South Korea due to semiconductor fabrication, electronics manufacturing, battery production, and advanced industrial applications. Companies including Samsung Electronics, SK Hynix, and LG Energy Solution require continuous supplies of high-purity nitrogen for controlled manufacturing environments. Oxygen maintains the largest consumption volume because of its extensive use in steelmaking, chemicals, healthcare, and petrochemical processing. Argon demand remains stable through welding, shipbuilding, semiconductor manufacturing, and metal fabrication industries concentrated around Ulsan, Busan, and Gyeongnam. The "Others" segment, including specialty gases such as neon, krypton, and xenon, remains smaller but strategically important due to South Korea's semiconductor and display manufacturing leadership.


Considered in this report
• Historic Year: 2020
• Base year: 2025
• Estimated year: 2026
• Forecast year: 2031

Aspects covered in this report
• Air Separation Unit Market with its value and forecast along with its segments
• Various drivers and challenges
• On-going trends and developments
• Top profiled companies
• Strategic recommendation

By Process
• Cryogenic
• Non-Cryogenic

By End Use
• Iron & Steel
• Oil & Gas
• Healthcare
• Chemicals
• Food & Beverage
• Others

By Gas
• Nitrogen
• Oxygen
• Argon
• Others