Heads/End Closures are critical pressure-retaining components that seal the ends of steam generator vessels, ensuring structural integrity and safety under high-pressure steam conditions.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Diameter | 1000-5000 mm | |
| Surface Finish | Ra ≤ 3.2 μm | |
| Pressure Rating | Up to 2500 psi | |
| Weld Efficiency | 1.0 for radiographed joints | |
| Temperature Range | -20°C to 600°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A pressure vessel that contains water/steam and facilitates heat transfer from combustion gases or heating elements to generate steam.
A sealed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.
A closed container designed to hold gases or liquids at a pressure substantially different from ambient pressure.
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Common types include hemispherical heads (for high pressure), elliptical heads (2:1 ratio for balanced strength), and torispherical heads (with knuckle radius for cost-effectiveness), selected based on pressure, temperature, and fabrication requirements.
They are designed with pressure-relief features, non-destructive testing (e.g., ultrasonic inspection), and compliance with standards like ASME BPVC to prevent catastrophic failures, with regular maintenance checks for corrosion or fatigue cracks.
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