Factory-Made Wrought Buttwelding Fittings
Purpose and Scope of ASME B16.9-2024
ASME B16.9, Factory-Made Wrought Buttwelding Fittings, is a vital component of the ASME B16 family of standards, which covers flanges, fittings, and gaskets. Its primary objective is to define the physical characteristics of manufactured pipe fittings that are joined to pipe by butt welding, ensuring that these components are compatible with the pipes they connect and can withstand the pressure conditions of the overall piping system.
The standard covers fittings in sizes from NPS 1/2 through NPS 48 (DN 15 through DN 1200) and of any producible wall thickness. It includes requirements for:
Note that this standard does not specify the pressure rating itself, but rather dimensions that are compatible with the pressure ratings defined by the applicable ASME Piping Code (like B31.1, B31.3, or B31.8) for a given pipe wall thickness.
Application and Use
ASME B16.9 is indispensable to several stages of the industrial piping lifecycle, providing the technical blueprint for the most common connections in process plants and pipelines. It is used by:
The consistent use of B16.9 minimizes risks during installation, facilitates the smooth assembly of complex piping systems, and ensures that the finished system operates safely under the stresses of industrial service.
| SDO | ASME: American Society of Mechanical Engineers |
| Document Number | B16.9 |
| Publication Date | Oct. 16, 2024 |
| Language | en - English |
| Page Count | 46 |
| Revision Level | |
| Supercedes | |
| Committee |