Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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ASTM A516 / ASME SA516 Gr.70 Carbon Steel Elliptical Head Ellipsoidal Dish End For Oil Gas Tanks
The elliptical head ( or named ellipsoidal head ) which is a head consisting of two parts: a rotating ellipsoidal sphere and a cylindrical straight section. Elliptical tank head is fabricated to have a certain shape instead of a particular dish radius or knuckle radius. The dish radius is approximately 90% of the diameter and the knuckle radius is approximately 17% of the diameter. 2:1 elliptical flanged and dished heads are ASME compliant.
Elliptical Heads Details
D0 = Outer diameter
Di = Inner diameter
SF = Stepped-edge height
DH = Dish height
THi = Total height innen
KR = Dish radius
CR = Wall thickness
| Standard | Description |
| ASTM/ASME | A/SA516 - Grade 70 |
| DIN Standard | / |
| British Standard | BS1501-224-490A/B |
| European Norm | EN10028 P355GH |
| Forging part | Hot Form |
| Material | ASTM A516 Gr.70 |
| Dimension | According to your drawings, or we supply the draws |
| Application | Oil and water tank cover and head |
| Inspection | Chemical composition; UT , MT; mechanical property; dimension check |
| Standard | ASTM, ASME, DIN, JIS, ISO, BS, API, EN |
| QC Doc. | Chemical composition report; mechanical properties report; UT test report; heat treatment report; dimensions check report. |
| Forging processing | Ingot---forging---heat treatment---rough machining---UT.MT---Q+T---inspection---finishing machining---UT.MT---Packing |
| Heat treatment | Normalized / Annealed / Quenched / Tempered |
Materials
Carbon steel tank ends/caps, flat dished head: SA516 GR60N,GR70N
Stainless steel ELLIPSOIDAL DISHED END, elliptical tank head: SA240 304, 316
Titanium alloy pressure vessel ends: SB256 GR1, GR2, GR5
Production Procedure
Materials purchased - Physical and chemical tests - Production - Hot forging and forming - Heat treatment - Inspection - Fine finishing - Finished product inspection - Marking - Finished product inspection - Marking - Packing and typing - Shipping.
Large Bending Machine
Applications
Petroleum, electronics, chemicals, pharmaceuticals, light textiles, food, machinery, construction, nuclear power, aerospace, military industry
Pressure vessel Dished heads, Boilers Ends caps, ellipsoidal dished end, Heat exchanger Elliptical head, Crown radius of Ellipsoidal head