PipeBook icon — flange face

PipeBook

The pipefitter's pocket reference & field calculator

Buy it once. Works with no signal.
Never loses features.

Download on the App Store

$12.99 one-time · no subscription · no ads · no account

310/318pipe schedule values verified
174/183fitting takeoffs verified
836/836flange & bolt-up values verified

A look at it

Rolling offset calculator showing true offset, travel, run and the 6-inch cut lengthTravel to cut length, with the takeoffs and your gap already subtracted
Search results for the query 6 90 showing 6-inch takeoffsType “6 90”. Get the 6″ takeoffs.
Pipe schedule table for NPS one-half inchWall, ID in decimals and 16ths, weight per foot
6 inch class 150 flange card with dimensions and bolt-upThe whole bolt-up on one card, ring number included
Feet and inches running tape calculatorTape math that never loses a 16th

What's in it

Reference

  • Pipe schedules, NPS 1/8 to 48 — wall, ID in decimals and 16ths, weight per foot (B36.10M / B36.19M)
  • Fitting takeoffs — 90s and 45s, LR and SR, tees, reducers, caps, stub ends (B16.9)
  • Flanges, classes 150/300/600 — dims plus the full bolt-up: stud count, diameter, length RF and RTJ, ring numbers (B16.5 / B16.20)

Calculators

  • Rolling offset — set, roll, travel, run, and end-to-end cut length with real takeoffs and your welder's gap
  • Cut a fitting — any angle from a factory 90, with heel, centerline, and throat marks
  • Miter cuts — cut angle, cutback, segment lengths
  • Parallel offset — equal-spread runs through a turn
  • Feet & inches — running tape math that never loses a 16th

Where the numbers come from

Every dimension is extracted from two independent published sources, machine-compared, and hand-resolved against a third before it ships. The handful of values that haven't cleared that process are marked in the app, in plain sight, rather than quietly shipped.

If a number ever looks wrong to you, say so first. Accuracy reports jump the line, get checked against the standards, and the fix ships to everyone — usually the same day.

Built for the field

Fully offline: no sign-in, no license check, nothing to time out in a basement or on a right-of-way. Fraction-first display, big targets that work with gloves on, an optional keep-awake for open tables, and a share button that sends your welder the cut with the diagram attached.

QR code for PipeBook on the App Store

On a computer? Scan with your phone's camera.