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Build your skills with pipefitting lessons, piping drawings, welding, rigging, and industrial equipment guides. Pair the lessons with Numerus pipefitting calculations, Ayso piping isometric drawings, and our grouped trade courses.

230 articles

Learning CenterJuly 25, 2026

Refinery Turnaround Dictionary: 100 Terms Every Shutdown Worker Should Know

Refinery turnaround is a complex process that requires a deep understanding of specialized terminology. This comprehensive dictionary covers 100 essential terms used during shutdowns, outages, and maintenance projects…

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Learning CenterJuly 23, 2026

Pipe Schedule Chart Explained: Pipe Sizes, Wall Thickness & Dimensions Guide

Pipe schedules are essential for pipefitters, welders, and engineers, determining wall thickness, pressure capability, and fitting requirements. This guide explains how to read a schedule chart and why pipe dimensions…

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Learning Center

Refinery Turnaround Dictionary: 100 Terms Every Shutdown Worker Should Know

Pipe Schedule Chart Explained: Pipe Sizes, Wall Thickness & Dimensions Guide

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