ASME B16.5 flanges
Flanges to ASME B16.5 (and B16.47 for large flanges) in all designs – weld neck, slip-on, blind, threaded and lap joint, Class 150 to 2500, NPS ½" to 24", for international projects and the oil & gas industry.
Application & design
Flanges to ASME B16.5 (and B16.47 for large flanges) in all designs – weld neck, slip-on, blind, threaded and lap joint, Class 150 to 2500, NPS ½" to 24", for international projects and the oil & gas industry.
- Oil, gas and petrochemical (US standard)
- Export and international projects
- Weld Neck, Slip-On, Blind, Threaded, Lap Joint
- Class 150 to 2500, NPS ½"–24"
Technical overview
Standardised reference data. Please ask for availability of individual sizes and pressure ratings.
| Feature | Detail |
|---|---|
| Standards | ASME B16.5, ASME B16.47 A/B, ASTM A105/A182 |
| Pressure ratings | Class 150 – 2500 |
| Sealing faces | RF / RTJ / FF |
| Nominal sizes | NPS ½" – 24" (B16.5) |
| ASME equivalent | ASME B16.5 / B16.47 |
We supply ASME B16.5 flanges to EN 1092-1, DIN and ASME – matched to pipe, material and pressure rating, on request with an EN 10204 3.1 / 3.2 mill certificate.
Frequently asked questions about ASME B16.5 flanges
What is an ASME B16.5 flange?
A flange to the US standard ASME B16.5 – in weld neck (WN), slip-on (SO), blind (BL), threaded (TH), lap joint (LJ) and socket weld (SW), Class 150 to 2500, NPS ½" to 24".
What do Class 150 / 300 / 600 mean?
The Class is the pressure-temperature (pound) rating – higher Class = higher permissible pressures at a given temperature.
Do you supply large flanges above 24"?
Yes, via ASME B16.47 Series A and B (26" to 60").
Request ASME B16.5 flanges?
Type, size, pressure rating, sealing face and material are enough – we supply the right flange, on request with an EN 10204 3.1 / 3.2 mill certificate.
All data are typical values per EN 1092-1 / DIN / ASME for first orientation – without warranty. Please ask for the availability of individual sizes and pressure ratings. The applicable standard and the order confirmation are decisive.