Reference
Quick engineering lookups for everyday piping work. Each tool links back to the articles that explain the background.
Pipe schedule lookupNPS, OD, wall thickness and weight by schedule.Open tool →Flange rating chartPressure–temperature ratings by class and material group.Open tool →Wall thickness calculatorPressure design thickness for straight pipe per ASME B31.3.Open tool →
Before you use the numbers
The tools use published values from ASME B36.10M (pipe dimensions) and ASME B16.5 (flange ratings, Material Group 1.1) and the ASME B31.3 pressure design equation for straight pipe. They are for quick checks and learning. For design, always confirm against the current edition of the standard and your project specification.