SS Pipe Sizes with OD, ID & Wall Thickness – Explained | Udhhyog Guide
Understanding SS pipe sizes is essential when planning plumbing, industrial piping, fabrication, or structural frameworks. A mismatch in size can lead to poor fittings, leaks, and costly errors. At Udhhyog , we supply a full range of stainless steel pipes (SS 304, 316, etc.) , and we want to make pipe selection easy by breaking down how OD (Outer Diameter), ID (Inner Diameter) , and Wall Thickness work together. ๐ What Do OD, ID, and Wall Thickness Mean? Let’s clarify the three major pipe sizing terms: Term Full Form What It Means OD Outer Diameter Total diameter from outer edge to outer edge ID Inner Diameter Inside measurement of the pipe where the flow happens Wall Thickness Pipe Wall Thickness Distance between outer and inner wall, affecting strength & flow ๐ Formula: To calculate Inner Diameter : ID = OD – (2 × Wall Thickness) ๐งพ Standard SS Pipe Sizes (OD, ID, Wall Thickness) Below is a size chart for standard stainless steel pipes based on ASTM A312 / A269 ...