FLANGE STANDARD LIBRARYAX FORGE · SPEC SHEET
SPEC SHEETNo. 802
EN 1092-1 · EN 1092-1:2018

EN 1092-1 PN40 DN25 Weld Neck

DN25Weld NeckDimensions mmWeight kg
EN 1092-1 · DN25 · PN40 · Weld Neck FlangeEN 1092-1 · DN25 · PN40 · Weld Neck Flange O.D. D 115.0 Bolt circle K 85.0 4ר14.0 Raised face Ø 68.0 Thickness C 18.0 RF height f 2.0 Length H 40.0 Hub Ø A 46.0 Weld end Ø 33.7 Both views share one scale (1:2.3); schematic only Unit: mm

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

SymbolItemValue
DOutside diameter115mm
CFlange thickness / blind thickness18mm
D2Raised face diameter68mm
fRaised face height2mm
KBolt circle diameter85mm
nNumber of bolt holes4pcs
dBolt hole diameter14mm
AHub diameter46mm
HHub length / overall length40mm
BWelding-end diameter33.7mm
—Approximate weight1.3kg

Pressure–temperature ratings · PN40 · Group 3E0

RT °C40.0 bar100 °C37.1 bar150 °C35.2 bar200 °C33.3 bar250 °C30.4 bar300 °C27.6 bar350 °C25.7 bar400 °C23.8 bar450 °C13.1 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