Start your preliminary flange make-up calculation.

Select a flange standard below to start your preliminary calculation.

API 17D For subsea/API flange applications where API 17D is specified. API 6A For API wellhead and high-pressure oilfield flange applications. ASME B16.47 Series A For NPS 26 and larger. Series A is the heavier large-diameter ASME flange series. ASME B16.47 Series B For NPS 26 and larger. Series B is the more compact large-diameter ASME flange series. ASME B16.5 For standard ASME flanges up to NPS 24. Common for process piping flange joints. EN1092-1 For European metric PN-rated flanges according to EN 1092-1. Common for DIN/EN piping flange joints.

Calculation Report

Engineer-reviewed flange joint documentation based on your calculator input.

The Calculation Report gives you a clear, structured engineering review of a specific flange joint. It is designed for maintenance teams, engineers, inspectors and project files where flange make-up data must be traceable, consistent and easy to review.

  • Standard-aligned: based on the selected flange standard, pressure class, size, gasket, bolt material and operating conditions.

  • Engineer-reviewed: reviewed by a Flange Management engineer before the final report is issued.

  • Clear and practical: torque, bolt load, bolt stress, gasket stress and flange-related checks are presented in a structured report.

  • Suitable for project files: useful for maintenance dossiers, turnaround documentation, QA review and long-term plant records.

When the question comes: “How was this flange joint made up?”

In industrial plants, flange joints are a risk and accountability point. When integrity or leak-tightness is questioned—during maintenance, turnaround, incident review, or inspection—you don’t want to search for scattered calculations and emails.

You want one clear report that shows the selected joint data, calculator input and engineering checks in a consistent format.

What you receive

The Calculation Report is a customer-facing engineering document issued by Flange Management for a specific flange joint.

It is designed for:

  • Engineering review.
  • Maintenance and turnaround documentation.
  • QA and inspection support.
  • Consistent long-term recordkeeping.

What’s inside the report

Clean structure, easy review

  • Joint data: standard, pressure class, pipe size, flange type and flange face.
  • Component data: gasket, flange material, bolt material, lubricant and pipe schedule.
  • Calculator input: tightening target, target value, friction value, temperature and pressure conditions.
  • Engineering checks: bolt load, bolt stress, gasket stress, flange stress/rigidity and load loss details where applicable.
  • Results summary: clear make-up values and engineering review output.
  • Notes and assumptions: project-specific comments, assumptions or deviations where relevant.

How it works

  1. Start the calculator.
  2. Enter the flange joint data.
  3. Review the free preliminary result.
  4. Add the Calculation Report to your cart.
  5. A Flange Management engineer reviews the submitted data.
  6. Receive the final PDF report for filing and sharing.

Important note

The Calculation Report supports engineering review, documentation and decision-making for flange joint make-up. It does not replace site procedures, statutory inspection requirements or the final responsibility of the plant owner/operator.

FAQ

  • Can you issue reports for different flange standards?
    Yes. The Calculation Report is based on the selected standard and available calculation data.
  • Is the report automatically generated?
    The preliminary result is generated online. The full Calculation Report is reviewed by a Flange Management engineer before issue.
  • Can I order reports for multiple flange joints?
    Yes. Each flange joint can be added as a separate Calculation Report. Volume pricing is applied automatically.
  • Can I include project-specific notes?
    Yes. The notes field can be used for project-specific requirements, assumptions or deviations.
  • Do I receive a PDF report?
    Yes. The final Calculation Report is issued as a PDF for filing and sharing.