Hemispherical Dished End Manufacturer and Supplier in India
​KRR Engineering is a leading hemispherical dished end manufacturer and supplier, delivering precision-formed heads for high-pressure and critical process applications across oil & gas, chemicals, fertilisers, power, and aerospace sectors. With over five decades of heavy engineering expertise and ASME-certified manufacturing, we produce hemispherical heads with superior dimensional accuracy, uniform thickness, and excellent stress distribution—ensuring maximum strength, safety, and long-term performance for pressure vessels, reactors, and storage systems.
Hemispherical Dished End Manufacturer and Supplier for Critical Industries
As a specialist hemispherical dished end manufacturer and supplier, KRR produces heads that are not only geometrically perfect but metallurgically balanced.
The forming of a hemisphere involves extreme plastic deformation, which — if not controlled — can create hidden residual stresses that later trigger distortion or cracking in service.
KRR’s proprietary forming and heat-treatment methodology ensures:
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Uniform grain flow across the dome
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No hardening at the crown
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No thinning at the pole
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No distortion at weld lands
This is why KRR heads perform reliably in hydrogen cycling, cryogenic contraction, vacuum-pressure switching, and aerospace thermal shock conditions.
What Makes KRR Hemispherical Heads Different
Most hemispherical heads fail not because of design — but because of forming defects that are invisible to the eye.
KRR eliminates these through:
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Controlled multi-stage forming instead of single-hit pressing
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Post-forming stress-relief matched to alloy chemistry
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100% thickness mapping
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Digital profile verification against CAD geometry
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UT, RT, DP and MPI depending on service duty
The result is a hemispherical head that behaves as a true pressure shell, not just a shaped plate.
What Makes KRR Hemispherical Heads Different
We manufacture hemispherical dished ends in:
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Carbon & low-temperature steels
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Stainless steels (304, 316, 321, 347)
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Duplex & Super Duplex
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Inconel, Hastelloy, Monel
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Titanium, Nickel & hydrogen-grade alloys
Up to 15 m diameter and 100 mm thickness, in single-piece or segmental construction.
Where KRR Hemispherical Dished Ends Are Used
Our heads operate inside:
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Hydrogen & compressed gas vessels
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Cryogenic LNG, LOX & LHâ‚‚ tanks
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Aerospace autoclaves
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Nuclear pressure components
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High-pressure chemical reactors
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Pharma & biotech sterile vessels
These are environments where even microscopic defects can cause catastrophic failure — which is why KRR is selected.
Need Zero-Defect Hemispherical Heads for Your Pressure Equipment?Speak with KRR’s engineering team for a technically validated solution built for extreme pressure, temperature, and safety-critical servic