Caps & Heads / HEAD-H
Hemispherical Head
Hemi-spherical form delivering the highest pressure capability with the most uniform stress distribution.
Technical Specifications
Pressure Class
500# - 10000#
Temperature Range
-269°C to +1100°C
Size Range
1/2" - 48"
Materials
SA516 Gr70, 304/L, 316/L, Inconel 600/625, Hastelloy
Standards
ASME B16.9, ASME VIII Div.1/Div.2, EN 10028
End / Connection Types
Butt WeldSpecial WeldCritical Service
Key Features
- Hemispherical form
- Maximum pressure rating
- Uniform stress distribution
- Minimum material for strength
- High temperature capable
- For critical services
Applications
- Ultra high pressure
- Nuclear facilities
- Aerospace
- Research reactors
- Critical processes
- Special duty
Design Features
- Hemispherical geometry
- Maximum pressure strength
- Optimized thickness
- Very high temperature range
- Special welding procedures
- Critical design rules
Pressure Performance
Pressure Rating
10000#
Temperature Range
-269°C to +1100°C
Thickness Standard
6mm - 100mm
Design Code
ASME VIII Div.2
Dimension Table
| size | od | radius | thickness | weight |
|---|---|---|---|---|
| 12" | 323.9 | 161.9 | 12.7 | 16.8 |
| 24" | 609.6 | 304.8 | 19.0 | 68.5 |
| 36" | 914.4 | 457.2 | 25.4 | 162.3 |
| 48" | 1219.2 | 609.6 | 31.8 | 325.7 |
| 60" | 1524.0 | 762.0 | 38.1 | 585.4 |
| 84" | 2133.6 | 1066.8 | 50.8 | 1425.8 |
Technical Notes
- 01Delivers the highest pressure capacity.
- 02Designed to ASME VIII Div.2.
- 03Requires special fabrication and NDT.
- 04Suited for critical services.