This is a simple little app that calculates the welding times and pressures when butt welding PE pipe together. The outside diameter - OD (mm), standard dimension ratio - SDR and hydraulic cylinder area (mm2) are required to be entered in by the user to produce these calculations. The SDR can also be calculated if the water pressure class - PN and the material type (PE80 or PE100) is known. The PN to SDR conversion table is also provided in the main menu selection.
I wrote this app to double check my onsite welding calculations when time is of the essence and the client is counting the seconds.
Note: This app was written essentially for a smart phone to be used on site.

Version 2 Uploaded 6 Sept 2014 (not shown in screenshots)
- Adapted App for use on older phones (Android 2.2, API Level 8, Froyo)
- Added allowance calculations including:
Gap
Misalignment
Heater plate temperature
Minimum weld width after cooling
Maximum weld width after cooling