r₁ = d

h₂ ≈ 0,134 d

b = edge width =

45 with d = 450 - 550 mm

50 with d = 600 – 1000 mm

60 with d = 1050 – 4000 mm

Larger edge widths on request

Volume of the head V ≈ 0,05386 d³

If s = minimum wall thickness, please specify on enquiry.