Pipe Caps
Semi-Ellipsoidal Caps
Semi-ellipsoidal caps (2:1 ratio) provide the optimal balance between pressure resistance and material economy for high-pressure applications. The elliptical profile distributes stress more uniformly than dished caps, making them the preferred choice for pressure vessels operating above 100 psi. Shree Raj Steels supplies 2:1 ellipsoidal caps manufactured to ASME B16.9 and ASME Section VIII in all standard material grades.
Size: 2" – 60"Standards: ASME B16.9, ASME Section VIII Div.1, DIN 28013
ISO Certified Quality
Full material traceability & mill test certificates.
Technical Specifications
| Size Range | 2" – 60" |
|---|---|
| Type | Semi-Ellipsoidal (2:1 ratio) |
| Profile | Major axis = OD, Minor axis = 0.5 × OD |
| Manufacturing | Hot Pressed |
Surface Finish / Coating
Black PaintedBarePickled & Passivated
Available Grades
Carbon Steel
- ASTM A234 WPB
- ASTM A516 Gr.70
Alloy Steel
- ASTM A234 WP11
- ASTM A234 WP22
- ASTM A234 WP91
Stainless Steel
- ASTM A403 WP304/L
- ASTM A403 WP316/L
- 904L
- Duplex 2205
Exotic / Special Alloys
- Monel 400
- Inconel 625
- Hastelloy C276
Applications
High-Pressure Vessels
Reactor Vessels
Columns & Towers
Critical Piping
Key Features
- Superior pressure distribution
- Ideal for high-pressure service
- ASME VIII compliant
- Thinner wall allowed vs. dished caps
Manufacturing Standards
ASME B16.9
ASME Section VIII Div.1
DIN 28013
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