YUHONG HOLDING GROUP CO., LTD
| Outside Diameter | Customized according to client drawing |
| Delivery Time | 10 - 90 Days |
| Heat Treatment | Solution Annealed (upon request for heavy deformation) |
| Packaging Details | Ply-wooden case |
| Testing Methods | PT (Liquid Penetration), RT (Radiographic Test), UT (Ultrasonic Test) |
| Payment Terms | T/T,L/C |
| Wall Thickness | Customized according to design pressure |
| Supply Ability | 500 PCS per month |
| Forming Method | Cold Pressing / Hot Pressing / Spinning |
| Chemical Composition | C ≤ 0.08, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Si ≤ 0.75, Cr 17.0 - 19.0, Ni 9.0 - 12.0, N ≤ 0.1, Ti 5×(C+N) - 0.70 |
| Model Number | Stainless steel Head Cap |
| Certification | ASME, ASTM, EN, GB, GOST, JIS |
| Place of Origin | China |
| Brand Name | YUHONG |
View Detail Information
Explore similar products
Pressure Vessel Shell And Ellipsoidal Head Stainless Steel Alloy Steel Super
Shell & Tube Heat Exchanger Parts Elliptical Head 2 1 Nace Mr0103 Hic Resistant
ASME SA516 GR 70 Elliptical Head For Pressure Vessel in Oil And Gas
ASME Pressure Vessel Heads Shell And Tube Heat Exchanger Closures
Product Specification
| Outside Diameter | Customized according to client drawing | Delivery Time | 10 - 90 Days |
| Heat Treatment | Solution Annealed (upon request for heavy deformation) | Packaging Details | Ply-wooden case |
| Testing Methods | PT (Liquid Penetration), RT (Radiographic Test), UT (Ultrasonic Test) | Payment Terms | T/T,L/C |
| Wall Thickness | Customized according to design pressure | Supply Ability | 500 PCS per month |
| Forming Method | Cold Pressing / Hot Pressing / Spinning | Chemical Composition | C ≤ 0.08, Mn ≤ 2.00, P ≤ 0.045, S ≤ 0.030, Si ≤ 0.75, Cr 17.0 - 19.0, Ni 9.0 - 12.0, N ≤ 0.1, Ti 5×(C+N) - 0.70 |
| Model Number | Stainless steel Head Cap | Certification | ASME, ASTM, EN, GB, GOST, JIS |
| Place of Origin | China | Brand Name | YUHONG |
| High Light | Stainless Steel Pressure Vessel Dished Head ，321 ss asme elliptical head ，ASME ellipsoidal dished head | ||
ASME SA240 Gr. 321 Stainless Steel Dished Heads are critical pressure-retaining components tailored for high-temperature service in shell and tube heat exchangers, reactors, and pressure vessels.
By incorporating titanium stabilization (minimum 5 × C+N%), SA240 Grade 321 prevents chromium carbide precipitation at grain boundaries during deep-drawing/spinning forming and subsequent circumferential seam welding, thereby preserving intergranular corrosion resistance in the Heat-Affected Zone (HAZ) without mandatory post-weld solution annealing.
Operating effectively within the sensitized temperature range of 427℃ to 816℃(800℉ to 1500℉), these dished ends exhibit higher creep-rupture strength and structural stability under sustained pressure compared to standard 304/316 austenitic grades, making them an optimal choice for cyclic thermal loads and aggressive process media.
| C | Mn | P | S | Si | Cr | Ni | N | Ti |
|---|---|---|---|---|---|---|---|---|
| ≤ 0.08 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | ≤ 0.75 | 17.0 - 19.0 | 9.0 - 12.0 | ≤ 0.1 | 5×(C+N) - 0.70 |
| Standard System | Country / Region | Standard Number | Equivalent Grade / Designation |
|---|---|---|---|
| ASME / ASTM | USA/ North America | ASME SA240 / ASTM A240 | Grade 321 (UNS S32100) |
| EN | Europe Union | EN 10028-7 | 1.4541 (X6CrNiTi18-10) |
| GB / GB/T | China | GB/T 713.7 (Old: GB/T 24511) | 06Cr18Ni11Ti (Old: 0Cr18Ni10Ti) |
| GOST/ ГОСТ | Russia / CIS | GOST 5632 / GOST 7350 | 12X18H10T/08Х18Н10Т |
To help engineers and procurement specialists design accurately, below are the standard dimensional parameters and calculation formulas for our ASME SA240 321 Torispherical Heads as shown in the schematic above:
(Note: Custom dimensions, SF heights, and beveling options are available upon request.)
| Parameter | Specification Details |
|---|---|
| Material Standard | ASME SA240 / ASTM A240 |
| Grade | UNS S32100 (Type 321 Stainless Steel) |
| Head Types Available | Torispherical (shown above), Ellipsoidal (2:1), Hemispherical, Flat Ends |
| Outside Diameter (D0) | Customized according to client drawing |
| Thickness (t) | Customized according to design pressure |
| Forming Method | Cold Pressing / Hot Pressing / Spinning |
| Heat Treatment | Solution Annealed (upon request for heavy deformation) |
| Testing & NDE | PT (Liquid Penetration), RT (Radiographic Test), UT (Ultrasonic Test) |
| Applications | Shell and Tube Heat Exchangers, Boilers, Reactors, Petroleum Storage |
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1990
Total Annual:
50M-75M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
.gtr-container-k7p2x9 { font-family: Arial, Helvetica, "Times New Roman", Arial, sans-serif; font-size: 14px; line-height: 1.6; color: #000000; padding: 16px; max-width: 100%; box-sizing: border-box; } .gtr-container-k7p2x9 p { margin-top: 0; margin-bottom: 1em; text-align: lef... .gtr-container-k7p2x9 { font-family: Arial, Helvetica, "Times New Roman", Arial, sans-serif; font-size: 14px; line-height: 1.6; color: #000000; padding: 16px; max-width: 100%; box-sizing: border-box; } .gtr-container-k7p2x9 p { margin-top: 0; margin-bottom: 1em; text-align: lef...
Get in touch with us
Leave a Message, we will call you back quickly!