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.
EN 1092-1 focused
ASME B16.5 supported
PN-rated supply
Traceable documents
EN 1092-1Main product range
ANSI B16.5Class-rated American standard
PED / AD 2000 / UKCACertificate references
Importers & stockistsRepeat supply cooperation
European shipment markets
Flange supply support for European importers and distributors.
Hyupshin supports EN 1092-1, DIN, BS 4504, UNI and project-standard flange inquiries for buyers in United Kingdom, Germany, Hungary, Poland, Czech Republic, Croatia, Italy, Serbia, Slovakia, France, Norway, Portugal, Spain, Netherlands, Austria, Ireland, Albania, Bulgaria, Belgium, Greece.
RFQ preparation
Information that makes European standard flange quotation faster.
Standard
EN 1092-1, ANSI / ASME B16.5, DIN, BS 4504, UNI or project drawing.
Flange details
Type, DN size, PN rating, facing, bore and drawing notes.
Material
Carbon steel, low-temperature steel, stainless steel or project grade.
Documents
EN 10204 3.1, inspection, marking, packing and certificate needs.
Focused pages
Related European flange pages
UNI 2280 PN6 Weld Neck Flanges
UNI 2280 PN6 weld neck flange dimensions.
UNI 2281 PN10 Weld Neck FlangesUNI 2281 PN10 weld neck flange dimensions.
UNI 2282 PN16 Weld Neck FlangesUNI 2282 PN16 weld neck flange dimensions.
UNI 2283 PN25 Weld Neck FlangesUNI 2283 PN25 weld neck flange dimensions.
UNI 2284 PN40 Weld Neck FlangesUNI 2284 PN40 weld neck flange dimensions.
UNI 6089 Loose FlangesUNI 6089 loose flange dimensions for Italian standard project review.
UNI 6090 Loose FlangesUNI 6090 loose flange dimensions for Italian standard project review.
UNI 6092 Blind FlangesUNI 6092 blind flange dimensions for Italian standard project review.
UNI 6093 Blind FlangesUNI 6093 blind flange dimensions for Italian standard project review.
Supply notes
UNI 2280-2284 Weld Neck Flanges for European buyers
Project confirmation
Weld neck orders should include bore and neck details, drawing if available, material grade and inspection or certificate needs.
European buyer focus
Order details to confirm before production
Weld Neck flange inquiries are reviewed against piping service, installation position and required facing.
State PN rating clearly, especially PN10, PN16, PN25 or PN40 for regular European distributor orders.
Common RFQs include carbon steel, low-temperature steel and stainless steel grades. Attach the project grade when it differs from regular stock items.
Confirm RF, FF, RTJ, galvanized finish, black paint, anti-rust oil or project-specific surface protection before quotation.
Mention EN 10204 3.1, PED, AD 2000, UKCA, PMI, NDT or third-party inspection requirements in the RFQ.
For European shipment, state pallet, wooden case, label, marking and mixed-size packing requirements early.
Procurement guidance
UNI 2280-2284 Weld Neck Flanges quotation notes
UNI 2280-2284 Weld Neck Flanges buying notes
UNI flange pages support Italian standard references used in distributor stock, maintenance work and regional European projects. Plate flanges under UNI 2276, 2277 and 2278 and weld neck flanges under UNI 2280-2284 should be quoted with the exact UNI number rather than only a general description.
Italian and nearby European buyers often care about dimensional matching, material certificate, finish and repeat availability. The RFQ should include the UNI series, DN size, PN rating, material and whether the flanges are for stock or a named project.
Weld Neck flange details
For weld neck flanges, the bore, pipe schedule, welding neck dimensions and pressure service should be stated clearly. These details affect machining and inspection, especially when the buyer needs WNRF, WNFF or RTJ execution.
For European buyers, the quotation is stronger when documentation requirements are stated at the beginning: EN 10204 3.1 certificate, PED or AD 2000 references, UKCA notes, third-party inspection, PMI, NDT, marking photos or packing photos. This avoids revising the price after the technical review.
How to prepare the RFQ
Hyupshin recommends sending the RFQ as a table when several sizes are involved. Separate each standard, type, pressure rating and material grade into its own line, then add quantity, destination port and required delivery time. This format is easier for European importers, distributors and project suppliers to compare and repeat in future orders.
If the order is urgent, mark which sizes are needed first and whether partial shipment is acceptable. For repeat distributors, previous purchase records or customer part numbers can be added to the message field so the specification can be matched more quickly.
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
UNI 2280-2284 Weld Neck Flanges RFQ support
Send the standard, DN size, PN rating, material grade, facing, quantity, certificate requirement and any project drawing. Hyupshin will check the specification before quotation.
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.
RFQ preparation
Contact sales