2:1 ellipsoidal end

Code FB5 | DIN28013 | ASME21

2:1 ellipsoidal end

Code FB5 | DIN28013 | ASME21

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De (outer diameter) 300÷4000 mm
S (thickness) 3÷20 mm
R FB5 / DIN 28013: = 0,8 * De
ASME 2:1: = 0,9 * Di
r FB5 / DIN 28013: = 0,154 * De
ASME 2:1: = 0,172 * Di
h ≈ 5 * S
Hi ≈ Di / 4
Ht = Hi + h + S
Volume [dm3] ≈ 0,1298 * (Di / 100)3 + (Di / 2000)2 * PI * h

2:1 ellipsoidal ends with diameter ranging from 300 to 4000 mm and thickness from 2 to 20 mm, cold- formed by dishing and flanging.
Built according to the main international standards (DIN, ASME, NF, etc.) or according to client specifications.

Standard supply conditions:

  • with centring hole Ø 16÷25 mm
  • square edge

They can be built also without centring hole (but only on ends ≥4 mm thick).

  • Stainless steels
  • Nickel and nickel alloys
  • Titanium
  • Aluminium
  • Copper

  • Preparation of edges (squaring, chamfering)
  • Surface finishing (satin-polishing, bright-polishing)
  • Washing and degreasing, pickling
  • Cutting of holes/apertures
  • Extrusion of holes/apertures

  • Dimensional inspection
  • Ultrasonic thickness measurement
  • X-ray welding inspection
  • Liquid penetrant testing
  • Surface roughness inspection

  • ISO 9001
  • PED 2014/68 EU Annex 3.1
  • EN ISO 3834-2
  • AD 2000-Merkblatt HP0