Yuhong Group Co.,Ltd
Yuhong Holding Group Co.,LTD
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A516 GR.70 Elliptical Heads Torispherical Heads Tank Caps For Heat Exchanger Parts.
Ellipsoidal Head,Hemispherical Head and Torispherical Head are three types of ASME Pressure Vessel Dished Heads.
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
Product Specification:
| Material | Carbon Steel; Stainless Steel; Special Steel |
| Size | 50-10000mm |
| Thickness | 2mm--300mm |
| Surface Treatment | 1. Intermediate & Final stage Heat Treatments; 2. Sand / Shot Blasting after Heat Treatment; 3. Weld Edge Preparation (Manual & Machined) |
| Reduction ratio | About 10% |
| Certificate | ISO9001 |
| Technology | 1. Cold & Hot forming; 2. Hot Pressed Hemispheres and Cold Formed Segmental Hemispheres; |
| Applicable standard | ANSI, ASME, MSS, API, DIN, JIS, BS. AWWA |
| Test | 1. Liquid Penetrant Examination; 2. Ultrasonic Testing; 3. 100% Radiography Testing of weld seams; 4. Magnet Particle Examination; 5. Inspection under various Third party Inspection Agencies 6. NDT( after forming): DPT, RT, MPI, UT; 7. NDT: 100% DPT, UT & RT OF weld joint |
| Connection | Welding |
| Application | Pressure vessel |
Materials
Carbon steel tank ends/caps, flat dished head: SA516 GR60N,GR70N
Stainless steel ELLIPSOIDAL DISHED END, elliptical tank head: SA240 SS304, SS316
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.