Description

Spinning is useful for large diameters, lower production quantities, thin sections, and shapes outside an available press-die range. Spun Dished Heads can be made from carbon steel, stainless steel, SA516 Gr70, or SA516 Gr60. Cold or hot spinning is selected according to material, diameter, thickness, and forming procedure. The operator develops the crown and transition in controlled passes, then the rim is trimmed and the flange is corrected. Beveling, openings, orientation marks, grinding, pickling, passivation, polishing, or coating preparation can be carried out after the final dimensions are checked. The progressive forming route also allows profile corrections before the rim is finally trimmed.

Components

The crown is developed through successive spinning passes.

The transition section follows the elliptical or drawing-defined profile.

A straight flange is finished for shell fit-up and circumferential welding.

Openings, weld edges, markings, and temporary transport supports may be added to Spun Dished Heads before dispatch.

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	100	0.1211	0.0053	34	2900	765	9.4807	3.4567
2	350	113	0.1603	0.0080	35	3000	790	10.1329	3.8170
3	400	125	0.2049	0.0115	36	3100	815	10.8067	4.2015
4	450	138	0.2548	0.0159	37	3200	840	11.5021	4.6110
5	500	150	0.3103	0.0213	38	3300	865	12.2193	5.0463
6	550	163	0.3711	0.0277	39	3400	890	12.9581	5.5080
7	600	175	0.4374	0.0353	40	3500	915	13.7186	5.9972
8	650	188	0.5090	0.0442	41	3600	940	14.5008	6.5144
9	700	200	0.5861	0.0545	42	3700	965	15.3047	7.0605
10	750	213	0.6686	0.0663	43	3800	990	16.1303	7.6364
11	800	225	0.7566	0.0796	44	3900	1015	16.9775	8.2427
12	850	238	0.8499	0.0946	45	4000	1040	17.8464	8.8802
13	900	250	0.9487	0.1113	46	4100	1065	18.7370	9.5498
14	950	263	1.0529	0.1300	47	4200	1090	19.6493	10.2523
15	1000	275	1.1625	0.1505	48	4300	1115	20.5832	10.9883
16	1100	300	1.3980	0.1980	49	4400	1140	21.5389	11.7588
17	1200	325	1.6552	0.2545	50	4500	1165	22.5162	12.5644
18	1300	350	1.9340	0.3208	51	4600	1190	23.5152	13.4060
19	1400	375	2.2346	0.3977	52	4700	1215	24.5359	14.2844
20	1500	400	2.5568	0.4860	53	4800	1240	25.5782	15.2003
21	1600	425	2.9007	0.5864	54	4900	1265	26.6422	16.1545
22	1700	450	3.2662	0.6999	55	5000	1290	27.7280	17.1479
23	1800	475	3.6535	0.8270	56	5100	1315	28.8353	18.1811
24	1900	500	4.0624	0.9687	57	5200	1340	29.9644	19.2550
25	2000	525	4.4930	1.1257	58	5300	1365	31.1152	20.3704
26	2100	565	5.0443	1.3508	59	5400	1390	32.2876	21.5281
27	2200	590	5.5229	1.5459	60	5500	1415	33.4817	22.7288
28	2300	615	6.0233	1.7588	61	5600	1440	34.6975	23.9733
29	2400	640	6.5453	1.9905	62	5700	1465	35.9350	25.2624
30	2500	665	7.0891	2.2417	63	5800	1490	37.1941	26.5969
31	2600	690	7.6545	2.5131	64	5900	1515	38.4749	27.9776
32	2700	715	8.2415	2.8055	65	6000	1540	39.7775	29.4053
33	2800	740	8.8503	3.1198	-	-	-	-	-

Our Services

01/

The forming route can be matched to diameter, thickness, material, and order quantity.

02/

Large or unusual profiles can be reviewed for cold spinning, hot spinning, or combined fabrication.

03/

Edge trimming, beveling, opening work, and dimensional correction are available in-house.

04/

Material certificates, dimensional records, and specified inspection reports can accompany delivery.

05/

Packing frames and lifting marks can be prepared for oversized heads.

06/

Technical support is available for handling, storage, fit-up, and document checks after shipment.

The final flange can be checked at several points around the circumference before the piece leaves the forming area.

Frequently Asked Questions (FAQ)

Q: When is spinning preferred over pressing?

A: It is often considered for large diameters, small batches, thinner plate, or profiles without a practical die set.

Q: Can the edge be machined after spinning?

A: Yes. The required bevel or machining allowance should be stated on the approved drawing.

Q: What details are needed for Spun Dished Heads?

A: Provide profile, material, diameter, nominal and minimum thickness, flange height, edge detail, openings, quantity, and inspection scope.

Hot Tags: spun dished heads, China spun dished heads manufacturers, suppliers, factory