FLANGE STANDARD LIBRARYAX FORGE · SPEC SHEET
SPEC SHEETNo. 787
EN 1092-1 · EN 1092-1:2018

EN 1092-1 PN25 DN80 Weld Neck

DN80Weld NeckDimensions mmWeight kg
EN 1092-1 · DN80 · PN25 · Weld Neck FlangeEN 1092-1 · DN80 · PN25 · Weld Neck Flange O.D. D 200.0 Bolt circle K 160.0 8ר18.0 Raised face Ø 138.0 Thickness C 24.0 RF height f 2.0 Length H 58.0 Hub Ø A 105.0 Weld end Ø 88.9 Both views share one scale (1:3.3); schematic only Unit: mm

Schematic — drawn from the table, not to scale for inspection.

SymbolItemValue
DOutside diameter200mm
CFlange thickness / blind thickness24mm
D2Raised face diameter138mm
fRaised face height2mm
KBolt circle diameter160mm
nNumber of bolt holes8pcs
dBolt hole diameter18mm
AHub diameter105mm
HHub length / overall length58mm
BWelding-end diameter88.9mm
—Approximate weight4.8kg

Pressure–temperature ratings · PN25 · Group 3E0

RT °C25.0 bar100 °C23.2 bar150 °C22.0 bar200 °C20.8 bar250 °C19.0 bar300 °C17.2 bar350 °C16.0 bar400 °C14.8 bar450 °C8.2 bar

Source: Tables G.2 to G.13 (pp. 113–124) — group 3E0 / P245GH (1.0352), vR ≤ 50 mm, all PN; Group 3E0.

Material and notes

Base material: P250GH / S235JR (Europe, UK, Middle East, Africa, CIS projects)

Rating: EN 1092-1 uses PN (nominal pressure) ratings in bar: PN6, PN10, PN16, PN25 and PN40. PN16 means 16 bar nominal at ambient temperature for EN material group 1, derating with temperature per the EN 1092-1 tables. EN PN ratings are not equivalent to AS…

Tolerances / marking: Tolerances, material groups and marking: EN 1092-1:2018, including Annex G.

Notes / special requirements

Work order Inspector Date Travels with the part; file after inspection