Does AutoPIPE perform calculations per ASME B31.3 chapter IX and appendix K ?
Chapter IX - High Pressure Piping
APPENDIX K - Allowable Stresses For High Pressure Piping
As of Jan 2020, an enhancement has been logged to Add high pressure calculation based on ASME B31.3 chapter IX method (137707).
ASME B31.3 Piping Code Calculation Issues