Designing pressure vessels can seem complex due to various loading conditions and head types, but fundamental formulas simplify the process. This post breaks down the core principles, highlighting the importance of understanding applicable codes, design techniques, and material selection. You'll walk through a practical example calculating the required thickness for a cylindrical shell and hemispherical heads under internal pressure, gaining insight into how engineers balance safety, performance, and cost in real-world applications. Discover that while formulas are key, a successful design also factors in material choices and manufacturing economics.