"...the UK's leading designer and manufacturer of above and below ground fuel storage tanks and pressure vessels..."

Outside Diameter OD mm
Spherical Radius Sp mm
Knuckle Radius Kr mm
Straight Flange Sf mm
Material & Thickness



T mm
Calculated Values:
Chosen Material/Density kg/m²
Internal diameter ID mm
Internal head depth ( -Sf, -T ) mm
Total internal head depth ( +Sf, -T ) mm
Volume in dished portion (-Sf) Litres
Total Head Volume (+Sf) Litres
Blank diameter of disc Dia mm
Weight of Dished Head M kg


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Cookson and Zinn (PTL) Limited is a limited company registered in England and Wales with registered number 03879913 and VAT registered number GB 740 9764 11.
Our registered office is at Olympus Close, Whitehouse Industrial Estate, Ipswich, Suffolk, IP1 5LN, United Kingdom.


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