Description
The shallow form keeps the vessel end shorter than a comparable elliptical or hemispherical head, which can help when equipment length is limited. dished heads are made from carbon steel, stainless steel, SA516 Gr70, or SA516 Gr60. Depending on diameter and plate condition, we use hydraulic pressing, cold spinning, or hot spinning. The formed rim is trimmed, the flange is checked for fit-up, and the weld edge can be left square or prepared with a bevel. Openings, orientation marks, pickling, passivation, polishing, or coating preparation may be completed before packing. On repeat orders, flange height and edge condition are kept consistent so the vessel shop can use the same assembly routine.
Main Applications
- Water-treatment tanks, filters, air receivers, and low-pressure process vessels.
- Horizontal tanks where a shorter end helps with transport or installation.
- Dust-collection equipment, heating systems, and general storage units.
- Repeated fabrication packages that use dished heads with the same diameter, flange height, and weld preparation.
Product Parameters
|
No. |
Nominal Diameter DN/mm |
Total Depth H/mm |
Internal Surface Area A/m² |
Capacity V/m³ |
No. |
Nominal Diameter DN/mm |
Total Depth H/mm |
Internal Surface Area A/m² |
Capacity V/m³ |
|
1 |
300 |
83 |
0.1127 |
0.0044 |
34 |
2900 |
602 |
8.6902 |
2.6779 |
|
2 |
350 |
93 |
0.1488 |
0.0066 |
35 |
3000 |
621 |
9.2869 |
2.9548 |
|
3 |
400 |
103 |
0.1898 |
0.0095 |
36 |
3100 |
641 |
9.9033 |
3.2502 |
|
4 |
450 |
112 |
0.2358 |
0.0130 |
37 |
3200 |
660 |
10.5396 |
3.5646 |
|
5 |
500 |
122 |
0.2868 |
0.0173 |
38 |
3300 |
679 |
11.1956 |
3.8987 |
|
6 |
550 |
132 |
0.3427 |
0.0224 |
39 |
3400 |
699 |
11.8715 |
4.2529 |
|
7 |
600 |
141 |
0.4035 |
0.0284 |
40 |
3500 |
718 |
12.5672 |
4.6280 |
|
8 |
650 |
151 |
0.4693 |
0.0355 |
41 |
3600 |
738 |
13.2826 |
5.0245 |
|
9 |
700 |
161 |
0.5401 |
0.0436 |
42 |
3700 |
757 |
14.0179 |
5.4430 |
|
10 |
750 |
170 |
0.6158 |
0.0528 |
43 |
3800 |
776 |
14.7729 |
5.8841 |
|
11 |
800 |
180 |
0.6964 |
0.0632 |
44 |
3900 |
796 |
15.5478 |
6.3484 |
|
12 |
850 |
190 |
0.7820 |
0.0750 |
45 |
4000 |
815 |
16.3424 |
6.8365 |
|
13 |
900 |
199 |
0.8726 |
0.0881 |
46 |
4100 |
834 |
17.1569 |
7.3489 |
|
14 |
950 |
209 |
0.9681 |
0.1026 |
47 |
4200 |
854 |
17.9912 |
7.8864 |
|
15 |
1000 |
219 |
1.0685 |
0.1186 |
48 |
4300 |
873 |
18.8452 |
8.4494 |
|
16 |
1100 |
238 |
1.2843 |
0.1555 |
49 |
4400 |
893 |
19.7191 |
9.0385 |
|
17 |
1200 |
258 |
1.5198 |
0.1993 |
50 |
4500 |
912 |
20.6127 |
9.6544 |
|
18 |
1300 |
277 |
1.7752 |
0.2506 |
51 |
4600 |
931 |
21.5262 |
10.2977 |
|
19 |
1400 |
296 |
2.0503 |
0.3100 |
52 |
4700 |
951 |
22.4594 |
10.9689 |
|
20 |
1500 |
316 |
2.3453 |
0.3782 |
53 |
4800 |
970 |
23.4125 |
11.6687 |
|
21 |
1600 |
335 |
2.6600 |
0.4556 |
54 |
4900 |
989 |
24.3853 |
12.3975 |
|
22 |
1700 |
354 |
2.9946 |
0.5430 |
55 |
5000 |
1009 |
25.3780 |
13.1561 |
|
23 |
1800 |
374 |
3.3489 |
0.6408 |
56 |
5100 |
1028 |
26.3904 |
13.9451 |
|
24 |
1900 |
393 |
3.7231 |
0.7497 |
57 |
5200 |
1048 |
27.4227 |
14.7649 |
|
25 |
2000 |
413 |
4.1170 |
0.8703 |
58 |
5300 |
1067 |
28.4748 |
15.6162 |
|
26 |
2100 |
447 |
4.6297 |
1.0551 |
59 |
5400 |
1086 |
29.5466 |
16.4997 |
|
27 |
2200 |
466 |
5.0680 |
1.2058 |
60 |
5500 |
1106 |
30.6383 |
17.4158 |
|
28 |
2300 |
486 |
5.5261 |
1.3703 |
61 |
5600 |
1125 |
31.7497 |
18.3652 |
|
29 |
2400 |
505 |
6.0039 |
1.5491 |
62 |
5700 |
1145 |
32.8810 |
19.3485 |
|
30 |
2500 |
524 |
6.5016 |
1.7427 |
63 |
5800 |
1164 |
34.0320 |
20.3663 |
|
31 |
2600 |
544 |
7.0190 |
1.9518 |
64 |
5900 |
1183 |
35.2029 |
21.4191 |
|
32 |
2700 |
563 |
7.5563 |
2.1770 |
65 |
6000 |
1203 |
36.3935 |
22.5076 |
|
33 |
2800 |
583 |
8.1134 |
2.4188 |
- |
- |
- |
- |
- |
Our Services
Material options are coordinated with the shell plate and the project welding procedure.
Pressing is available for repeat sizes, while spinning supports large diameters and uncommon dimensions.
Edges can be trimmed, beveled, ground, or left with machining allowance.
Nozzle holes and identification marks can be completed from an approved orientation drawing.
Material certificates, dimensional records, and inspection reports can be packed with the product.
Export supports and shipping marks are prepared around diameter, finish, and lifting method.
Order tags can be kept visible on the flange so site crews can identify each piece quickly.
Frequently Asked Questions (FAQ)
Q: Are torispherical and elliptical heads interchangeable?
A: No. Their depth, crown radius, knuckle geometry, capacity, and design calculations are different.
Q: Can the straight flange be changed?
A: Yes. The required height should be stated on the drawing before forming.
Q: Which details are needed for dished heads?
A: Provide material, diameter basis, thickness, minimum formed thickness, flange height, bevel, openings, quantity, standard, and inspection requirements.
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