Elliptical Head (EHA/EHB)

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
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
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
Standard -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