This is a simple little app that calculatesthe welding times and pressures when butt welding PE pipe together.The outside diameter - OD (mm), standard dimension ratio - SDR andhydraulic cylinder area (mm2) are required to be entered in by theuser to produce these calculations. The SDR can also be calculatedif the water pressure class - PN and the material type (PE80 orPE100) is known. The PN to SDR conversion table is also provided inthe main menu selection.I wrote this app to double check my onsite welding calculationswhen time is of the essence and the client is counting theseconds.Note: This app was written essentially for a smart phone to be usedon 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:GapMisalignmentHeater plate temperatureMinimum weld width after coolingMaximum weld width after cooling