Flange Make-Up Calculation

Complete the flange joint data below to receive a free preliminary calculation result. After reviewing the result, you can order the full Flange Make-Up Calculation Report as an engineer-reviewed PDF.

Flange joint data

Select the applicable flange standard. B16.5 is typically used up to NPS 24; B16.47 Series A/B for NPS 26 and larger. Series A is heavier; Series B is more compact.

Select the nominal pressure class. Final pressure suitability is verified during review.

Select the material or closest available equivalent. Add details in the notes if needed.

Only bolt/stud materials valid for the selected standard, size and bolt diameter are shown.

Optional. Select only if a spacer, spade, blind or similar item is included.

Select the pipe schedule if known. If unknown, leave the default value or mention it in the notes.

Calculation input

Select lubricant, then choose whether to use coefficient µ or K factor.

Final pressure suitability will be verified during the calculation review.

Use 0 if no external pressure or vacuum condition applies.

Enter the operating or design temperature used for the requested review.

Optional. Enter the service medium if relevant to the review.

Reference

Optional. This reference will appear in your cart and order confirmation.

Use this field for project-specific requirements, assumptions or deviations.

Calculating the preliminary result may take a few seconds.