Pipefitter's Mate
iPhone / Utilitaires
Stop scrap. Pipefitter's Mate is the offset calculator built for real pipefitters — fast enough for the jobsite, accurate enough for the fab shop.
Type your run and offset. The app gives you exact cut lengths, takeoffs, setbacks, weld gaps, and a visual spool diagram you can take to the saw. From simple 45° offsets to compound and rolling offsets — same workflow, same speed.
WHAT IT DOES
• Pipe offset calculations: 45°, 22.5°, 11.25°, 60°, custom angles
• Rolling offsets and compound offsets
• Cut length, travel, takeoff, setback — all displayed at once
• Weld gap math for multi-stick spools (gap is per joint, not per pipe end)
• ASME B16.9 elbow dimension reference built in
• Visual spool diagram updates as you type
• Catches input errors before you cut steel (12-rule validation engine)
WHO IT'S FOR
Pipefitters, steamfitters, welders, plumbers, sprinkler-fitters, gas-fitters, HVAC pros — apprentice or journeyman. If you lay out pipe for a living, this is your calculator.
BUILT FOR THE JOBSITE
• Works fully offline — no signal, no problem
• No ads, no login, no account
• Imperial and metric, switch instantly
• Dark mode for the welding shack
• Keep-screen-on so the phone doesn't sleep mid-layout
QUESTIONS, BUGS, FEATURE REQUESTS
Visit pipefittersmate.com — every email gets read and fixes ship fast.
Quoi de neuf dans la dernière version ?
New in 1.0.4:
• Schedule selector on Select Pipe Size — pick STD, XS, XXS, SCH 40, or SCH 80. Unavailable combos are auto-hidden.
• Total spool weight on the cutting list — pipe metal + 2 elbows + weld bead, in kg or lb. Use it to plan lifts, transport, and rigging.
• Dark mode now defaults on first launch — better visibility on jobsite under direct sun.
• Centered "Done" button above the iOS numeric keypad, and tap anywhere outside an input to dismiss the keyboard.
• More accurate weld weight (now includes bevel-fill metal even at zero root gap).
Pipefitter's Mate is offline-first — no account, no tracking, no internet required.