Tube, Pipe & Profile Forming worked example

Coating Area at 98% spray transfer efficiency: a worked example in tube, pipe & profile forming

Push spray transfer efficiency up to 98% and the picture changes. This example computes every intermediate figure at that operating point. Use it when coating area in tube, pipe and profile forming needs a buy quantity for the next tube, pipe and profile forming run and you do not want to short the line.

The inputs for this scenario

  • Total tube surface to coat: 500 units (unchanged)
  • Coating usage per unit of surface: 0.08 units (unchanged)
  • Spray transfer efficiency: 98 % (raised for this scenario; the documented default is 85)

Working through the calculation

  • Applying the documented formula (Required coating area = covered amount × use per unit ÷ transfer efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 40.82 sq ft for required quantity, the number this scenario is built around.
  • At this operating point the engine returns 40 sq ft for theoretical amount.
  • At this operating point the engine returns 0.82 sq ft for loss allowance.
  • At this operating point the engine returns 98 % for efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where spray transfer efficiency sits at 85% and the headline result is 47.06 sq ft, this scenario comes in 13.27% below the baseline at 40.82 sq ft.
  • It computes required coating quantity as surface times usage per unit divided by transfer efficiency, and reports the loss allowance versus the theoretical (100%-efficiency) amount. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Required quantity: 40.82 sq ft (headline result)
  • Theoretical amount: 40 sq ft
  • Loss allowance: 0.82 sq ft
  • Efficiency: 98 %

Run it with your numbers

  • Every input above is editable in the live Coating Area calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.