ASME B16.5 · Class 900
ASME B16.5 welding neck flange used on the flanged connections of pipelines in Class 900. Supplied in carbon steel, stainless and alloy grades, from stock or project-specific.
Piyasada 900 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 900 |
| 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 900 is used on high pressure hydrocarbon and steam lines, where material certification and traceability are usually requested at level 3.2. See weld neck or slip-on for the details.
