Pressure Vessel Manufacturers in India

Last updated on 27 October 2026

Pressure Vessel Manufacturers in India: Industrial Solutions by Colt Group

Pressure vessels sit quietly at the centre of industrial plants, storing compressed air, gases, and process fluids at pressures that would be dangerous if the equipment were poorly made. Because failure can be severe, choosing among pressure vessel manufacturers in India is a decision about safety, code compliance, and long-term reliability, not just price.

In this guide, we explain what an industrial pressure vessel is, the types used in industry, where they are applied, how they are designed and manufactured, and how to select the right capacity. We also look at what Colt Group offers as a pressure vessel manufacturer.

What Is an Industrial Pressure Vessel?

An industrial pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the surrounding atmosphere. Its shell, heads, nozzles, and supports are engineered to withstand internal pressure, temperature, and the stresses of operation under recognised design codes. In India, pressure vessels are commonly designed to IS 2825, and internationally to the ASME Boiler and Pressure Vessel Code, Section VIII Division 1.

Colt's pressure vessels are engineered to IS 2825 and ASME Sec VIII Div I standards, built from premium materials, and cover capacities from 50 litres to 100 m³ with working pressures of 7 to 30 kg/cm²(g).

Types of Pressure Vessels Manufactured for Industrial Applications

Pressure vessels are classified by function and by orientation. The types most relevant to compressed air and process plants include:

Colt's documented applications for its pressure vessels are compressed air, DM plants, and CO₂ storage. For other duties, such as unusual media or special design conditions, contact Colt's engineering team to review requirements.

Separators also appear inside compressor systems. To see how inter-stage cooling and moisture separation work, read our guide to compressor intercoolers.

Industrial Applications of Pressure Vessels

Pressure Vessel Design, Materials and Manufacturing Process

A pressure vessel is the product of careful design, correct materials, and controlled manufacturing. The sequence below describes how reputable fabricators approach it.

Design

Design starts from the working pressure, design pressure, temperature, media, capacity, and location. Wall thickness is calculated to the applicable code, with allowances for corrosion and the joint efficiency of the welds. Nozzles, manways, supports, and safety devices such as relief valves and pressure gauges are specified at this stage.

Materials

Material selection depends on the pressure, temperature, and the media contained. Colt builds pressure vessels from premium grades, including:

Manufacturing Process

Colt manufactures at its ISO 9001:2015 certified facility in Sonipat, Haryana, which includes CNC machining centers and in-house testing labs.

How to Select the Right Pressure Vessel Capacity

Capacity should match how the vessel will be used. For compressed air receivers, three approaches are common.

• Use the manufacturer's recommendation — Colt recommends a 500-litre receiver for compressors up to 30 HP, 1,000 litres from 40 to 100 HP, and 2,000 litres for 120 HP and above.
• Calculate from demand — A common formula is V = Q × t × Pa / ΔP, where V is receiver volume in m³, Q is the air flow to be supplied from storage in m³/min, t is the time in minutes, Pa is atmospheric pressure (about 1 bar), and ΔP is the allowable pressure drop in bar. For example, to supply 3 m³/min for 1 minute with a 2 bar drop: V = 3 × 1 × 1 / 2 = 1.5 m³.
• Account for demand pattern — Plants with sudden high demand, or compressors that load and unload often, need larger receivers.

Other selection factors include:

• Design pressure with a margin above the maximum working pressure
• Material compatibility with the media and condensate
• Vertical or horizontal orientation, depending on available space
• Required nozzles, drains, level or pressure instruments, and relief valves
• Inspection and statutory requirements applicable to your site
• Service access and maintenance

Why Choose Colt as Your Pressure Vessel Manufacturer in India

Colt Equipments Pvt. Ltd. has over 40 years of engineering experience, 3,000+ customers, and presence in 30+ countries. Colt offers:

• Pressure vessels engineered to IS 2825 and ASME Sec VIII Div I
• Capacities from 50 litres to 100 m³ and working pressures of 7 to 30 kg/cm²(g)
• Premium materials, including IS2062 Gr.B, IS2002, SA516 Gr.60/70, SS304, and SS316
• An ISO 9001:2015 certified fabrication facility with CNC machining and in-house testing
• A complete compressed air range, from compressors to dryers, filters, and piping, so vessels match the rest of the system
• Pan-India service with AMC and spare parts availability

Conclusion

A pressure vessel is only as dependable as the code it is built to, the materials it is made from, and the quality control behind its manufacture. Choosing a manufacturer with recognised standards, clear specifications, and service backing protects both your plant and your people.

If you need pressure vessels for compressed air or process duties, get in touch with Colt Group, and the engineering team will help you specify the right capacity and material.

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