Elliptical Head (EHA/EHB) Manufacturer

Elliptical Head (EHA/EHB)

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Elliptical Vessel Head, Elliptical Tank Head, Custom Head for Pressure Vessel, Customized Storage Tank Head, Pressure Container Head Customization

Weide takes a total area of 30 thousand m². Our head forming is the most advanced one in the world. We have now independently developed 6600t, 3000t, and 680t fully automatic double-acting hydraulic presses, 10m, 4m, and 3m cold metal spinning machines, 4.5m hot metal spinning machines, and other supporting equipment and molds. We have comprehensive , allowing Weide to produce pressure vessel heads of all shapes, specifications, and materials.

Technical Parameters of EHA Head (basing on inner diameter)

No.	Nominal diameter DN/mm	Total depth H/mm Tolerance	Roundness	Degree of convexity	Degree of concavity	Height of the straight edge
No.	Standard	-0.2%~0.6%DN	≤ 0.5%DN; ≤ 25mm	≤ 1.25%Di	≤ 0.625% Di	-5% ~10%h
1	300	100	≤ 1.5	≤ 3.75	≤ 1.88	25
2	350	113	≤ 1.75	≤ 4.38	≤ 2.19	25
3	400	125	≤ 2	≤ 5	≤ 2.5	25
4	450	138	≤ 2.25	≤ 5.63	≤ 2.81	25
5	500	150	≤ 2.5	≤ 6.25	≤ 3.13	25
6	550	163	≤ 2.75	≤ 6.88	≤ 3.44	25
7	600	175	≤ 3	≤ 7.5	≤ 3.75	25
8	650	188	≤ 3.25	≤ 8.13	≤ 4.06	25
9	700	200	≤ 3.5	≤ 8.75	≤ 4.38	25
10	750	213	≤ 3.75	≤ 9.38	≤ 4.69	25
11	800	225	≤ 4	≤ 10	≤ 5	25
12	850	238	≤ 4.25	≤ 10.63	≤ 5.31	25
13	900	250	≤ 4.5	≤ 11.25	≤ 5.63	25
14	950	263	≤ 4.75	≤ 11.88	≤ 5.94	25
15	1000	275	≤ 5	≤ 12.5	≤ 6.25	25
16	1100	300	≤ 5.5	≤ 13.75	≤ 6.88	25
17	1200	325	≤ 6	≤ 15	≤ 7.5	25
18	1300	350	≤ 6.5	≤ 16.25	≤ 8.13	25
19	1400	375	≤ 7	≤ 17.5	≤ 9.38	25
20	1500	400	≤ 7.5	≤ 18.75	≤ 9.38	25

Technical Parameters of EHA Head (basing on inner diameter)

No.	Nominal diameter DN/mm	Total depth H/mm Tolerance	Roundness	Degree of convexity	Degree of concavity	Height of the straight edge Tolerance
No.	Standard	-0.2%~0.6%DN	≤ 0.5%DN; ≤ 25mm	≤ 1.25%Di	≤ 0.625% Di	-5% ~10%h
21	1600	425	≤ 8	≤ 20	≤ 10	25
22	1700	450	≤ 8.5	≤ 21.25	≤ 10.63	25
23	1800	475	≤ 9	≤ 22.5	≤ 11.25	25
24	1900	500	≤ 9.5	≤ 23.75	≤ 11.88	25
25	2000	525	≤ 10	≤ 25	≤ 12.5	40
26	2100	565	≤ 10.5	≤ 26.25	≤ 13.13	40
27	2200	590	≤ 11	≤ 27.5	≤ 13.75	40
28	2300	615	≤ 11.5	≤ 28.75	≤ 14.38	40
29	2400	640	≤ 12	≤ 30	≤ 15	40
30	2500	665	≤ 12.5	≤ 31.25	≤ 15.63	40
31	2600	690	≤ 13	≤ 32.5	≤ 16.25	40
32	2700	715	≤ 13.5	≤ 33.75	≤ 16.88	40
33	2800	740	≤ 14	≤ 35	≤ 17.5	40
34	2900	765	≤ 14.5	≤ 36.25	≤ 18.13	40
35	3000	790	≤ 15	≤ 37.5	≤ 18.75	40

Technical Parameters of EHB Head (basing on outer diameter)

No.	Nominal diameter DN/mm	Nominal thickness	Total depth H/mm Tolerance	Roundness	Degree of convexity	Degree of concavity	Height of the straight edge
No.	Standard	Nominal thickness	-0.2%~0.6%DN	≤ 0.5%DN; ≤ 25mm	≤ 1.25%Di	≤ 0.625% Di	-5% ~10%h
	159	4	65				25
		5					25
		6					25
		8					25
	219	5	80				25
		6					25
		8	80	≤ 1.1	≤ 2.54	≤ 1.27	25
	273	6	93				25
		8					25
		10					25
		12					25
	325	6	106				25
		8					25
		10					25
		12					25
	377	8	119				25
		10					25
		12					25
		14					25
	426	8	132	≤ 2.0	5.07	2.54	25
		10					25
		12					25
		14					25

Notes:
a. Total depth of head = depth of curved edge straight edge (1/4Di straight edge)
b. Longitudinal folds are not allowed on the straight edge of heads