ASME B36.19

Types of Stainless Steel Used in Process Piping | Grades, Selection, Standards & Applications

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Stainless steel is one of the most important material families used in process piping because its chromium-rich passive surface can provide strong resistance to many aqueous, chemical, atmospheric, and high-temperature environments. But “stainless steel” is not a single material. Austenitic, ferritic, martensitic, precipitation-hardening, duplex, and super duplex grades can have very different corrosion resistance, strength, … Read more

Pipe Sizes and Pipe Schedule

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Pipe sizes are identified using NPS (Nominal Pipe Size) or DN (Diameter Nominal), together with a wall-thickness designation such as Schedule 40, Schedule 80, 10S, or 40S. NPS and DN are nominal designators, not actual inside diameters. The actual pipe inside diameter depends on the standardized outside diameter and the selected wall thickness. For engineering … Read more

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