Ellipsoidal Dished End Manufacturer in Chennai | High-Performance Heads for Critical Pressure Applications
Ellipsoidal Dished Ends—commonly recognized as 2:1 Ellipsoidal Heads—are the preferred closure type for high-pressure, high-integrity pressure vessels where mechanical efficiency and weight optimization are critical. As a leading Ellipsoidal Dished End Manufacturer in Chennai, KRR Dished Ends specializes in precision-formed Ellipsoidal Dished Ends, engineered to meet stringent design, safety, and performance requirements across modern process industries.
Their smooth elliptical contour provides a superior stress path, resulting in lower crown stresses and better pressure-holding capacity than torispherical heads. Every head is produced with controlled forming, calibrated curvature, and rigorous QA/QC checks to guarantee long-term operational reliability.
Engineering Excellence in Ellipsoidal Head Manufacturing
Our strength lies in delivering dimensionally accurate, uniformly curved, and structurally stable ellipsoidal heads that integrate perfectly with pressure vessel shells. Using advanced hydraulic presses, segmented dies, and in-house heat-treatment facilities, KRR manufactures ellipsoidal ends with minimal deviation and superior surface finish.
DIAMETER RANGE
400 – 15,000 mm
MATERIALS
CS / SS / Duplex / Exotics
THICKNESS RANGE
6 - 600mm
STANDARDS
ASME / IBR / PED / Class
DESIGN & GEOMETRY
What Are Ellipsoidal Dished Ends?
Ellipsoidal Dished Ends (2:1 Ellipsoidal Heads) are pressure-retaining closures with an elliptical profile designed for efficient stress distribution under internal pressure.
Compared to torispherical heads, the 2:1 elliptical contour offers:
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Lower crown and knuckle stresses for a given internal pressure
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More uniform stress distribution across the head profile
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Better pressure-carrying capacity for the same diameter
This makes ellipsoidal heads the preferred choice for high-pressure, high-integrity pressure vessels where safety, reliability, and weight optimisation are essential.
PERFORMANCE ADVANTAGES
Why Ellipsoidal Heads Are Preferred
The 2:1 elliptical profile is engineered for demanding service where pressure, temperature, and cyclic loading are critical design drivers.
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Higher design pressure handling than torispherical heads
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Reduced localised stress at the knuckle region
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Lower required wall thickness for the same pressure rating
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More compact vessel design with reduced overall height
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Improved fatigue resistance for cyclic or thermal service
WHY KRR
Ellipsoidal Dished End Manufacturers in Chennai & India
Manufactured in Chennai, KRR Ellipsoidal Dished Ends serve major fabrication houses, EPC contractors, and OEMs across India and more than 30 export markets.
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Industry-leading forming capacity for large diameters
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High repeatability and consistent curvature on thick and wide plates
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In-house heat treatment for fully stress-relieved heads
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Capability to form exotic-grade and critical service materials
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Compliance with international inspection agencies (ABS, DNV, Lloyd’s, TÜV and others)
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Proven supply record for global refinery, petrochemical, power and green energy projects
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Whether for high-pressure reactors or large-capacity storage units, KRR ensures perfect profile, perfect fit, and perfect performance.
APPLICATIONS
Applications Across Industrial Segments
KRR supplies Ellipsoidal Dished Ends to leading fabricators, EPCs, and OEMs across India and global markets.
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Chemical & Petrochemical Plants
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Refinery and Gas Processing Units
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Hydrogen, Ammonia & Green Energy Projects
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Pharmaceutical and Food Process Vessels
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High-Pressure Autoclaves & Reaction Units
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Power & Utility Boilers
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Cryogenic Tanks, Air Receivers & Gas Storage
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Heavy Fabrication & OEM Equipment Manufacturing
High-Pressure Reactors
Hydrogen & Green Energy
Process & Utility Boilers
Cryogenic & Gas Storage
FAQ'S
Frequently Asked Questions on Ellipsoidal Dished Ends
Are Ellipsoidal Heads suitable for high-pressure applications?
Yes. The 2:1 elliptical geometry is specifically designed to withstand higher internal pressure with lower stress concentration, making it ideal for high-pressure, critical service applications.
Do you manufacture in stainless steel and alloy materials?
Yes. We manufacture Ellipsoidal Dished Ends in carbon steel, Cr-Mo steels, stainless steel (304/316/316L/321), Duplex & Super Duplex, Inconel, Hastelloy, Monel, Titanium and other exotic materials.
Can KRR supply stress-relieved ellipsoidal heads?
Absolutely. KRR has in-house heat-treatment facilities for full stress relief and normalising, as required by project specifications and applicable design codes.
What is your maximum forming size?
Our forming capacity covers up to 15 metres diameter and 100 mm thickness for Ellipsoidal Dished Ends, subject to project-specific geometry and material combinations.
Looking for high-performance Ellipsoidal Dished Ends for your next high-pressure vessel or critical process application? KRR’s specialised forming facility in Chennai can support standard and customised 2:1 ellipsoidal geometries with full compliance to global codes and project specifications.
📍No 6, Vanagaram Road, Ayanambakkam,
Chennai – 600095, India
☎️+91 93456 25050 | +91 99400 98749
✉️ bd@krr.co.in