ASME B16.5 · Class 150
ASME B16.5 welding neck flange used on the flanged connections of pipelines in Class 150. Supplied in carbon steel, stainless and alloy grades, from stock or project-specific.
Piyasada 150 libre olarak da anılır; ASME ve ANSI B16.5 aynı ölçü tablosunu kullanır.
| Product type | Welding Neck Flange |
|---|---|
| Standard | ASME B16.5 |
| Pressure class | Class 150 |
| Size range | 1/2" – 24" |
| Material | ASTM A105, A350 LF2, A182 F304/F304L, F316/F316L, F11, F22 |
| Facing | RF / FF / RTJ |
| Certification | EN 10204 3.1 / 3.2 |
Selection and ordering notes
In a weld neck flange the pipe is joined to the end of the tapered hub with a butt weld. Stress decreases gradually along the hub, which makes it the standard choice for high pressure, high temperature and vibrating lines. The weld is single and fully radiographable.
The hub bore is machined to the pipe schedule, so the schedule must be stated on the order. Class 150 carries roughly 19 bar at ambient temperature, and that value drops markedly as temperature rises. It is the most common class on general service lines. See weld neck or slip-on for the details.
