Commercial Pipe Metric Data

Reference data and engineering information about commercial pipe metric data for piping systems applications.

Overview

Engineering reference data for Commercial Pipe Metric Data in piping systems.

Key Formulas

Continuity

$A_1 v_1 = A_2 v_2$

Mass conservation in pipe flow.

Pressure Drop

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Darcy-Weisbach equation.

Pipe Area

$A = \frac{\pi D^2}{4}$

Cross-sectional area of a pipe.

Variables

Symbol	Description	Unit
$D$	Pipe diameter	m
$v$	Flow velocity	m/s
$\Delta P$	Pressure drop	Pa
$f$	Friction factor	—

The schedule designation for steel pipes indicates the wall thickness relative to the outside diameter. Standard (Std) and Extra Strong (XS) are common designations, while Schedule numbers (e.g., 5S, 10S, 40, 80, 160) provide a more granular classification. A higher schedule number generally corresponds to a thicker wall, allowing the pipe to withstand higher internal pressures.