For fitters · welders · piping engineers

Every pipe number,
one tap away.

Pipe schedules, flanges, fittings and bolting from the ASME standards, next to 20 field calculators. Every part is a 3D model you can turn, drawn from real dimensions and from your own numbers.

Get it on Google Play See it in 3D

£9.99 once. No ads, no subscription, no account.

  • Works offline
  • ASME / MSS data
  • Real-proportion 3D
ASME B36.10MB36.19MB16.5B16.9B16.10B16.11B16.20B1.20.1B31.3MSS SP-43SP-95SP-97 ASME B36.10MB36.19MB16.5B16.9B16.10B16.11B16.20B1.20.1B31.3MSS SP-43SP-95SP-97
Why fitters keep it on the home screen

Built for the job, not the desk.

Pipewise is designed for gloves, sunlight and a phone in one hand, with the answer you need shown first.

See it in 3D

Pipe, elbows, tees, reducers, caps and flanges with their studs, in true proportion. Drag to turn, pinch to zoom.

Search that answers

Type “6 sch 80” and get the wall, ID and weight straight away. Type “4 300 flange” for the bolt circle and stud length.

Set your size once

Pick a size on the tape-measure ruler and every table and calculator opens at it.

20 field calculators

Offsets, rolling offsets, cut lengths, saddle templates, bolt torque, B31.3 wall thickness and more. Results update as you type.

Gloves and sunlight

Big keys with one-tap fractions and feet/inch buttons, plus a high-contrast Sunlight theme for working outdoors.

Offline and private

No signal needed on site. No account, no ads, and your saved work stays on your phone.

Understand the part before you cut

Turn it. Read it. Build it.

Every table has a 3D model and a lettered drawing. Tap a value such as “A” or “Y” and it lights up yellow on both. The layout calculators draw your actual job, so a rolling offset sits in its real run, rise and roll box.

Pipewise flange table with a 3D weld-neck flange and its studs
Search

Ask it the way you'd say it.

Sizes in inches, fractions or DN, schedules, classes and plain words all work. When there's a single answer, it's on the first screen.

6 sch 80wall, ID, weight 4 300 flangebolt circle, studs DN150size card 2 elbowcentre to end rolling offsetcalculator
Search for 6 sch 80 showing outside diameter, wall, inside diameter and weight
Made for site work

Ten feet three and a half. Six taps.

  • Feet, inches and fractions as keys, or type 10' 3 1/2", 1.2m or 450mm.
  • The answer stays visible at the top while the keypad is open, and updates as you type.
  • The live conversion under the number shows inches, feet-inches and millimetres.
  • Save and share a calculation as a cut list, or pin it to your Home screen.
  • Imperial or metric, rounded to 1/8″, 1/16″ or 1/32″.
Simple offset calculator with the large keypad open and the travel shown at the top
20 calculators

From layout to bolt-up.

Every calculator shows its working and its standard, and flags anything risky, such as an offset too tight for the elbows or a flange class too low for your pressure.

Layout & fitting
  • Simple offset 3D
  • Rolling offset 3D
  • Pipe cut length
  • Cut an elbow to angle 3D
  • Mitred bend
  • Branch saddle template 3D
Design & process
  • Wall thickness (B31.3) 3D
  • Flow & pressure drop
  • Flange rating (P–T)
  • Hydrotest
  • Blind / blank thickness
  • Thermal expansion
Bolting & welding
  • Bolt torque + sequence 3D
  • Weld metal & rods
  • Pipe weight & volume 3D
  • Paint & insulation
Field maths
  • Slope & drain fall
  • Right triangle
  • Fractions & decimals
  • Unit converter

And the reference tables

Pipe dimensions B36.10M / B36.19M Buttweld fittings B16.9 Stub ends Socket-weld & threaded B16.11 Olets & swages Flanges, Class 150–2500 B16.5 Gaskets B16.20 P–T ratings Valve face to face B16.10 Studs & nuts NPT threads B1.20.1 Materials & P-numbers
One price. Everything.

Buy it once. Own it.

  • All reference tables, all 20 calculators, all 3D models
  • No ads, ever, and nothing locked behind a subscription
  • No account. Your settings and saved work stay on your phone
  • Works offline on site, in plant rooms and in basements
  • Future updates and fixes included
Google Play
£9.99 one-off

Less than a box of cutting discs. Shown in your local currency on Google Play.

Get it on Google Play
About

Made in the United Kingdom by an Indian developer.

Pipewise is built and looked after by one person who reads every message. Spotted a value that doesn't match your standard, or want a calculator added? Every calculator and table has a button that emails me your inputs, so fixes are quick.

hello@sterin.dev Read the guide
Questions
Does it work without signal?

Yes. All tables, calculators and 3D models are built into the app. Nothing needs the internet.

Where do the numbers come from?

ASME B36.10M, B36.19M, B16.5, B16.9, B16.10, B16.11, B16.20, B1.20.1 and MSS SP-43/95/97, with calculators following ASME B31.3 where noted. Olet and swage figures are typical manufacturer values. It's a field reference, so always check critical dimensions against the current standard and your project specification.

Inches or millimetres?

Both. Choose imperial (feet-inch-fractions, psi, °F) or metric (mm, bar, °C) and switch any time. Every value converts straight away.

Is there an iPhone version?

Pipewise is on Android today. If you'd like it on iPhone, email hello@sterin.dev. Demand decides what comes next.

What data does the app collect?

No accounts and no ads. Your settings and saved calculations stay on your phone. See the privacy policy for the full details.

Refunds?

Purchases are handled by Google Play, including refunds under Google Play's policy. If something isn't right, email me first and I'll do my best to fix it.