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ASME Flanged & Dished Hi-Crown large tank heads are more resistant to internal pressures than Standard ASME Code F&D heads with a comparable thickness. Hi-Crowns have an 80% dish radius and 3T (T= thickness) knuckle or 7% of the diameter, whichever is greater. A test report of elements & mechanicals is provided with full traceability.

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![QQH`YJ(R75DQ6FM4_S5]]GY.jpg](http://sc01.alicdn.com/kf/HTB1ST0nHXXXXXaQXXXXq6xXFXXXt/201002540/HTB1ST0nHXXXXXaQXXXXq6xXFXXXt.jpg)


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