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Contact name:Jikin Cai
Yuhong Group Co.,Ltd |
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Q235B Elliptical Heads DIsh Heads Tank Caps For Heat Exchanger Parts
We supply a variety of dish heads types such as Semi Elliptical, Torispherical, Hemi Head , Dished Head, Flat and Ellipsoidal Head.
Dish Heads also known as dished ends or tank heads are an important component of pressure vessels.
There is a multitude of types and sizes of dished heads used in different industries. These dished heads are handled in various methods such as deep drawing, cold forming, spinning, dishing, and flanging, as well as forming the heads in crown and petal segments.
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,Q235B,AISI4140
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.
