Learn P&ID symbols and flow diagrams step by step. Beginner-friendly guide to piping design, line numbering system, piping class, ASME B31, and oil and gas piping. Introduction A P&ID (Piping and Instrumentation Diagram) is one of the most important technical documents used in Piping Design and Piping Engineering. It represents how a process system is … Read more
In any process plant, pipes are more than just hollow tubes carrying fluid. They are pressure-containing components expected to work safely for 20, 25, sometimes 40 years. During that life, corrosion is not a possibility — it is a certainty.That is where corrosion allowance comes in. As a piping engineer, understanding corrosion allowance is one … Read more
When you first step into a plant site or start reading piping drawings, everything may look confusing—pipes going everywhere, strange symbols on drawings, and many unfamiliar names. Over time, you realize that a piping system is not just pipes. It is a collection of piping components, each with a specific role. Understanding piping components is … Read more
When someone starts learning piping engineering, one of the first and most important topics they must understand is piping materials. In real plants, most piping problems do not happen because of poor drawings, but because of wrong material selection. Over the years, I have seen leaks, cracks, corrosion failures, and even shutdowns—all linked back to … Read more
If you are new to piping engineering, or even if you are working in the field for a few years, you will often hear terms like NPS, DN, and Schedule. Many beginners get confused and sometimes even experienced engineers mix these terms during discussions. I will explain NPS, DN, and Pipe Schedule in a very … Read more
Introduction piping engineering practice, the terms piping and pipeline are often used incorrectly. However, from a design, code, and safety point of view, piping and pipeline are two different systems. Understanding this difference is essential for correct engineering decisions. What Is Piping? Piping is an engineered system used to transport fluids inside a plant or … Read more
Introduction When I started my career in piping engineering more than 20+ years ago, the first question my senior asked me was very simple: “Do you really understand what piping is?” Many beginners think piping is just pipes.But in reality, piping is a complete engineering system, and understanding it correctly is the foundation of everything … Read more