Air Separation Plant Suppliers in India

Evaluating India’s leading suppliers of ASU projects for safety, efficiency, and long-term value

Reliable access to industrial gases such as oxygen, nitrogen, and argon is the foundation of many sectors in India including steel manufacturing, healthcare, energy, and chemical production. Air separation plants (ASUs) are critical systems that separate atmospheric air into its primary components, enabling industries to operate without the risks of supply chain disruptions. In India, the rising demand for gaseous air separation plants and liquid air separation plants reflects both domestic industrial growth and export opportunities. With 2025 shaping into a decisive year for infrastructure planning, the choice of a trusted supplier of air separation plants in India has become central to operational resilience. This article presents a curated list of the top 10 suppliers in India, offering comparative insights to support decision-makers in selecting the right partner for critical ASU projects.

Use cases – ideal for hospitals, manufacturers, and process plants in India seeking reliable gas supply infrastructure.

Methodology and Evaluation Criteria

The ranking of the top 10 suppliers of ASUs in India has been based on a balanced evaluation of technology expertise, scalability of solutions, post-installation support, and market credibility. Each supplier profile highlights strengths, weaknesses, and rating markers to provide procurement officers and plant managers a diagnostic comparison. The assessment includes both multinational giants with global resources and specialized Indian companies that focus on project-specific installation of air separation plants. Each profile concludes with a direct link to the company’s official website for reference.

Top 10 Air Separation Plant Suppliers in India

1. Deneb Air Gases

Deneb Air Gases has positioned itself as a diagnostic-first supplier of ASU in India, combining VPSA, PSA, and cryogenic technologies to address diverse industrial needs. With emphasis on engineering-driven design, Deneb specializes in modular cryogenic systems, customized fabrication, and integrated cryogenic tank manufacturing. The company’s expertise extends across oxygen and nitrogen plant design, ensuring sustainable and safe gas generation systems for steel plants, hospitals, and chemical units.

Strengths - Site-specific engineering, sustainable cryogenic expertise, integrated natural gas and LNG workflows, robust compliance frameworks. Weaknesses - Limited brand recognition outside industrial buyer circles. Rating Score - 9.6/10 Website -denebairgases.com

2. INOX Air Products

INOX Air Products is a joint venture offering global-standard gaseous air separation plants across India. Known for its scale and operational reliability, INOX serves steel plants and large manufacturing industries with long-term supply contracts.

Strengths - Strong financial backing, global technologies, reliable supply networks. Weaknesses - Less flexibility for smaller project customization. Rating Score - 9.1/10 Website -inoxap.com

3. Linde India

Linde India, part of the global Linde group, is recognized for large-scale liquid air separation plants and pipeline-integrated solutions. With decades of Indian presence, it ensures project safety, compliance, and export capability.

Strengths - Global expertise, safety-first engineering, international client base. Weaknesses - High cost for small-to-mid-scale projects. Rating Score - 9.0/10 Website -linde.com

4. Oxyplants India Pvt. Ltd.

Specializing in oxygen and nitrogen plant design, Oxyplants provides Indian industries with compact and export-ready ASU solutions. Their focus includes healthcare and mid-capacity plants.

Strengths - Compact systems, global export capabilities, medical oxygen expertise. Weaknesses - Limited scale for mega industrial facilities. Rating Score - 8.7/10 Website -oxyplants.com

5. Gaztron Engineering Pvt. Ltd.

Gaztron Engineering is a recognized supplier of gaseous ASU systems in India, with strengths in PSA and VPSA technologies. It is often chosen for cost-sensitive projects requiring reliable nitrogen supply.

Strengths - PSA specialization, nitrogen-rich solutions, competitive pricing. Weaknesses - Limited cryogenic infrastructure expertise. Rating Score - 8.5/10 Website -gaztronindia.com

6. Universal Industrial Plants Manufacturing Co.

Universal Industrial Plants offers turnkey air separation plant projects, with decades of fabrication experience. Their engineering teams provide cost-effective plant setups for mid-sized industries.

Strengths - Turnkey services, cost efficiency, robust fabrication. Weaknesses - Limited integration with LNG or advanced cryogenic workflows. Rating Score - 8.3/10 Website -airseparationplants.com

7. Sanghi Oxygen

Sanghi Oxygen focuses on mid-scale installation of air separation plants for domestic industries. Their plants are designed for reliability and durability, often serving tier-2 industrial hubs in India.

Strengths - Sturdy equipment, reliable uptime, Indian industrial focus. Weaknesses - Limited global technology partnerships. Rating Score - 8.2/10 Website -sanghioxygen.com

8. MOS Techno Engineers

MOS Techno Engineers specializes in compact gas generation systems in India, offering skid-mounted units and simplified deployment. They are often chosen by smaller manufacturing plants.

Strengths - Skid-mounted units, low-cost solutions, faster installation. Weaknesses - Limited for mega-scale gas infrastructure projects. Rating Score - 8.0/10 Website -mostechnoengineers.com

9. AVS Engineering Co.

AVS Engineering offers customized air separation plant projects with an emphasis on local manufacturing. Their portfolio includes industrial oxygen plants and nitrogen systems.

Strengths - Custom engineering, locally manufactured systems. Weaknesses - Limited long-term operational diagnostics. Rating Score - 7.9/10 Website -avsengineering.com

10. Shiva Techno Fab

Shiva Techno Fab is a growing supplier of ASUs with focus on industrial-grade fabrication and supply of oxygen plants. Their engineering portfolio supports tier-2 cities and smaller industrial clusters.

Strengths - Reliable fabrication, Indian engineering footprint. Weaknesses - Limited scalability for mega projects. Rating Score - 7.8/10 Website -shivatechnofab.com

Comparative Insights and Market Trends

The Indian market for ASUs reflects a balance between multinational giants such as INOX and Linde, and innovative Indian firms such as Deneb, Gaztron, and Oxyplants. With demand accelerating for cryogenic tank manufacturing, advanced PSA systems, and energy-efficient installation of air separation plants, suppliers are increasingly adapting toward scalable, modular infrastructure. Decision-makers now prioritize tailored projects that balance reliability and cost-efficiency, with Deneb standing out as a diagnostic-led engineering partner delivering safe, sustainable, and sector-specific solutions.

Conclusion

India’s ASU market in 2025 underscores diversity and innovation, offering industries the flexibility to choose between global-standard suppliers and specialized Indian firms. Selecting the right supplier of liquid ASU or supplier of gaseous ASU depends on project size, technology integration, and long-term service needs. Deneb Air Gases continues to establish itself as a trusted air separation partner in India, bringing customer-focused engineering, safety compliance, and sustainability into every air separation plant project. 👉 Contact Deneb Air Gases