B16.5 threaded flanges are used where welded joints are not preferred. Our quotation records NPT thread, class rating, facing and material on the same item line.
| Standard / Type | Product | Typical scope |
|---|---|---|
| Thread | NPT | Recorded on the quotation and machining route |
| Common class | 150 / 300 / 600 | By inquiry |
| Facing | RF / FF | According to order requirement |
| NPS | OD in | Flange thickness in | Face dia. in | Bolt circle in | Holes | Hole dia. in | Approx. kg |
|---|---|---|---|---|---|---|---|
| 1/2" | 3.75 | 0.56 | 1.38 | 2.62 | 4 | 0.62 | 0.74 |
| 3/4" | 4.62 | 0.62 | 1.69 | 3.25 | 4 | 0.75 | 1.27 |
| 1" | 4.88 | 0.69 | 2 | 3.5 | 4 | 0.75 | 1.52 |
| 1 1/2" | 6.12 | 0.88 | 2.88 | 4.5 | 4 | 0.88 | 2.96 |
| 2" | 6.5 | 1 | 3.62 | 5 | 8 | 0.75 | 3.62 |
Use these tables for RFQ preparation. Final production should be confirmed against the required standard edition, drawing, material grade and certificate requirement.
We machine and inspect the specified NPT thread against the recorded NPS size, class rating, facing and order requirements.
Material certificates and marking records follow the supplied material grade, heat number and order quantity.
Our technical team compares the requested standard edition and project drawing, then releases the applicable dimensions to production.
We record the Class, RF, FF or RTJ facing, bore or pipe schedule and tolerance notes on each ASME quotation line.
Flange type, sealing face, drilling, thickness and machining details are checked together so production and inspection use the same specification.
Our order file carries the agreed EN 10204 3.1, PED, AD 2000, UKCA, PMI, NDT and third-party inspection scope through to shipment.
Send the ASME B16.5 flange type, NPS, Class, facing, bore or pipe schedule, material grade, quantity and certificate requirement.
