How do you calculate cost per formed tube?

Multiply quantity by the variable rate and divide by the chargeable share, because unchargeable cost is still spent, add fixed setup, then divide by quantity. Here 100 x $45 / 80% + $250 = $5,875 total, or $58.75 per tube.

Why is my per-piece cost so high on a short run?

Fixed setup is spread over few parts. The $250 setup adds $2.50 per piece across 100 tubes but only $0.025 across 10,000, short runs carry the setup pain, which is why prototype pricing looks steep.

What does the capture factor represent?

It is the fraction of raw variable cost you can actually charge. At 80% the $4,500 raw variable cost loads to $5,625, because the written-off share is still spent making the tubes.

What is a good cost per formed tube?

There is no universal number; it depends on diameter, wall, bends and end-forms. What matters is that piece cost plus margin beats the customer's target and that setup is amortized over a realistic release quantity.

How do I lower cost per formed tube?

Increase run size to dilute the $250 setup, reduce the variable rate through faster cycle time or fewer secondary ops, or negotiate the capture factor if material handling can shift to the customer.

Should scrap be in the variable rate?

Yes, bake expected scrap and rework into the variable cost per tube, or your quoted piece cost will understate what a real run with springback and end-form cracks actually costs.

Tube, Pipe & Profile Forming calculator

Cost Per Formed Tube Calculator

Cost Per Formed Tube converts a run's variable forming cost, a chargeable-cost factor and fixed setup into a defensible piece price for bent, roll-formed or end-formed tube. Estimators and sales engineers lean on it when quoting because the fixed setup and tooling amortization spread very differently over a 100-piece prototype run than over a 10,000-piece production release. The capture-factor input models the portion of raw cost you actually pass through, useful when material is customer-supplied or when part of the cost is absorbed. Getting this number right is the difference between a healthy margin and quietly losing money on short runs where setup dominates.

What this calculator does

Cost Per Formed Tube converts a run's variable forming cost, a chargeable-cost factor and fixed setup into a defensible piece price for bent, roll-formed or end-formed tube.
Use it when cost per formed tube in tube, pipe and profile forming is being put through a tube, pipe and profile forming weighted-cost review.
It computes the total cost of a forming run and the resulting cost per formed tube after applying a chargeable-cost factor and adding fixed setup.

Formula used

Cost Per Formed Tube cost = quantity × rate × capture factor + fixed cost
Per-unit cost per formed tube = total cost ÷ quantity

Inputs explained

Formed tubes in the run:
Variable forming cost per tube:
Share of cost that is chargeable:
Fixed setup & tooling amortization:

How to use the result

Use it when quoting a tube-forming job, comparing short versus long run economics, or checking how setup amortization moves piece price.
It uses a single blended variable rate and one fixed figure, so it will not capture step-changes like a second setup, scrap rework loops or volume material discounts within the run.

Current U.S. benchmarks

The producer price index for steel mill products stands at 374.203 (BLS, Jul 2026), up 22.5% from a year earlier. Quotes priced off last quarter's material cost miss this move.

Common questions

How do you calculate cost per formed tube? Multiply quantity by the variable rate and divide by the chargeable share, because unchargeable cost is still spent, add fixed setup, then divide by quantity. Here 100 x $45 / 80% + $250 = $5,875 total, or $58.75 per tube.
Why is my per-piece cost so high on a short run? Fixed setup is spread over few parts. The $250 setup adds $2.50 per piece across 100 tubes but only $0.025 across 10,000, short runs carry the setup pain, which is why prototype pricing looks steep.
What does the capture factor represent? It is the fraction of raw variable cost you can actually charge. At 80% the $4,500 raw variable cost loads to $5,625, because the written-off share is still spent making the tubes.
What is a good cost per formed tube? There is no universal number; it depends on diameter, wall, bends and end-forms. What matters is that piece cost plus margin beats the customer's target and that setup is amortized over a realistic release quantity.
How do I lower cost per formed tube? Increase run size to dilute the $250 setup, reduce the variable rate through faster cycle time or fewer secondary ops, or negotiate the capture factor if material handling can shift to the customer.

Last reviewed 2026-08-12.