Oil, Gas & Energy Equipment Manufacturing worked example

Pressure Vessel Weld Cost at 58% weld scope included: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop weld scope included to 58%, then walk the calculation through step by step. Estimate the welding cost of a pressure vessel from total weld length, cost per inch of weld, the share of weld scope included, and fixed setup and NDE charges, so estimators can price a vessel and see whether welding is driving the quote.

The inputs for this scenario

  • Total weld length: 100 in (held at the documented default)
  • Welding cost per inch: 45 $ / in (held at the documented default)
  • Weld scope included: 58 % (the input this scenario stresses; the baseline uses 80)
  • Fixed setup and NDE cost: 250 $ (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Variable weld cost = total weld length × welding cost per inch × weld scope included.
  • Total pressure vessel weld cost works out to 2,860 $ at these inputs, and this is the headline figure for the scenario.
  • Weld cost per inch of weld works out to 28.6 $ / piece at these inputs.
  • Variable weld cost works out to 2,610 $ at these inputs.
  • Fixed setup and NDE cost works out to 250 $ at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where weld scope included sits at 80% and the headline result is 3,850 $, this scenario comes in 25.71% below the baseline at 2,860 $.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to weld scope included, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It uses one blended cost per inch and one scope factor, so it won't separately model wall-thickness-driven pass counts, position penalties, or material-specific procedure differences across the vessel.

Results at a glance

  • Total pressure vessel weld cost: 2,860 $ (headline result)
  • Weld cost per inch of weld: 28.6 $ / piece
  • Variable weld cost: 2,610 $
  • Fixed setup and NDE cost: 250 $

Run it with your numbers

  • To rerun this with your own numbers, open the live Pressure Vessel Weld Cost calculator, set weld scope included to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.