Elliptical Heads DIN 28013

(r1 = 0,8 da, r2 = 0,154 da) Diameter: 21,3 until 1600 mm
Hot or cold formed / annealed

da = Outer diameter
h1 = Stepped-edge height
h2 = Dish height
h3 = Total height inner
r1 = Dish radius
r2 = Knuckle radius
s = Wall thickness