UNI weld neck series
Common references include UNI 2280, UNI 2281, UNI 2282, UNI 2283 and UNI 2284, typically covering PN6 to PN40 requirements.
UNI focused page
UNI 2280-2284 Weld Neck Flanges
UNI 2280-2284 weld neck flanges are supplied for Italian standard projects and replacement orders requiring exact PN rating, bore, neck and facing confirmation.
UNI
DN size range
PN-rated supply
Traceable documents
Supply notes
Supply and order notes
Project confirmation
For weld neck orders, we link bore and neck details with the available drawing, material grade and inspection or certificate scope.
Technical purchasing support
How Hyupshin turns the specification into a controlled flange order.
UNI production dimensions
Our technical team compares the requested standard edition and project drawing, then releases the applicable dimensions to production.
PN-rated pressure classes according to standard and project requirement
We record the PN rating, sealing-face form, surface finish and tolerance notes on each PN-rated quotation line.
Weld Neck manufacturing details
Flange type, sealing face, drilling, thickness and machining details are checked together so production and inspection use the same specification.
Certificate and inspection records
Our order file carries the agreed EN 10204 3.1, PED, AD 2000, UKCA, PMI, NDT and third-party inspection scope through to shipment.
Reference scope
Common order references
| Standard / Type | Product | Typical scope |
|---|---|---|
| UNI 2280 | Weld neck flange | PN6 |
| UNI 2281 | Weld neck flange | PN10 |
| UNI 2282 | Weld neck flange | PN16 |
| UNI 2283 | Weld neck flange | PN25 |
| UNI 2284 | Weld neck flange | PN40 |
Send this product for quotation
Send Inquiry
Request a quotation for this flange
Send the standard, flange type, DN, PN, sealing face, material grade, quantity, certificate requirement and any project drawing.
Buyer questions
RFQ and order notes
Why is a drawing useful for UNI weld neck inquiries?
A drawing helps confirm bore, neck dimensions, facing, drilling and any project-specific tolerance requirement.