Material and Pressure Class Options Available for Standard Threaded Pipe Fittings
Material and Pressure Class Options Available for Standard Threaded Pipe Fittings Selecting the right material and pressure class for standard threaded pipe fittings is the single most important decision in any piping system design, because the wrong combination can lead to leaks, system failure, or catastrophic safety incidents. This guide explains the full range of material options—from malleable iron to galvanized steel and ductile iron—and breaks down the pressure class ratings (Class 150, Class 300, and beyond) that determine where each fitting can be safely used. Written for procurement engineers, project managers, and maintenance teams, this article covers how to match fitting materials to your fluid type, temperature range, and working pressure, with practical selection criteria for industrial, commercial, and municipal applications. Key Takeaways Standard threaded pipe fittings are available in malleable iron, galvanized steel, ductile iron, and stainless steel, each with...