Engineering Utilities
& Calculators

Practical, code-compliant tools built for piping engineers — from wall thickness checks to pipe schedule lookups.

01 ASME B31.3 Pipe Wall Thickness

Calculates minimum required thickness (t) under internal design pressure limits.

02 Pipe Weight & Hydro-test Estimator

Computes linear structural metallic masses alongside hydro-test volumetric variables.

03 Interactive Pipe Schedule Index

Quick structural dimensional reference matrix across common Nominal Pipe Sizes (NPS).

NPS (Inches) Outside Diameter (OD) Schedule (SCH) Wall Thickness (Inches) Internal Diameter (ID)
2" 2.375" SCH 40 0.154" 2.067"
2" 2.375" SCH 80 (XS) 0.218" 1.939"
3" 3.500" SCH 40 0.216" 3.068"
3" 3.500" SCH 80 (XS) 0.300" 2.900"
4" 4.500" SCH 40 0.237" 4.026"
4" 4.500" SCH 80 (XS) 0.337" 3.826"
6" 6.625" SCH 40 0.280" 6.065"
6" 6.625" SCH 80 (XS) 0.432" 5.761"