EN 1092-1 Flanges

EN 1092-1 Flanges

EN 1092-1 Type 11 Welding Neck Flange

EN 1092-1 Welding Neck Flange

EN 1092-1 Type 01 Slip On Flange

EN 1092-1 Slip On Flange

EN 1092-1 Type 05 Blind Flange

EN 1092-1 Blind Flange

 

StandardEN 1092-1 / DIN / BS
PN RangePN2.5 – PN400
Size RangeDN10 – DN4000
MaterialSS, Duplex, Nickel, CS, Ti
MTCEN 10204 3.1
OriginIndia, Korea, Europe

EN 1092-1 is the European standard for steel pipe flanges, covering pressure classes PN2.5 to PN400 across fourteen flange types – plate, weld-neck, blind, loose, hubbed slip-on, hubbed threaded and integral. Ramesh Steel Corporation manufactures DIN EN 1092-1 and BS EN 1092-1 flanges in Mumbai, India, across carbon steel, stainless steel, duplex, nickel alloy and titanium. Recent orders include weld-neck flanges to the USA, slip-on flanges to Ireland, blind and slip-on flanges to the Netherlands, and PN100 flanges to Yemen.

This page covers the full EN 1092-1 standard – all PN classes, flange types and materials. For a size-by-size PN16 dimension and weight breakdown, see our dedicated PN16 Flange Dimensions page.

Table of Content

 

 

BS EN 1092-1 Flanges – Type 01 & Type 05, PN6 to PN16, Raised Face

EN 1092-1 Flanges Specification

Pressure Class

Pressure Class :

  • PN2.5, PN6, PN10, PN16
  • PN25, PN40, PN63, PN100
  • PN160, PN250, PN320, PN400

Nominal Size

Nominal Size (DN) :

  • DN10 – DN600 (most ordered sizes)
  • DN700 – DN4000 (large sizes, made to drawing)

Facing

Facing :

  • Flat Face (Type A)
  • Raised Face (Type B1/B2)
  • Tongue, Groove, Spigot, Recess

Certification

Certification :

  • EN 10204 3.1 / 3.2
  • PMI, Hydrotest on request

Manufacturing

Manufacturing :

  • Forged (up to PN400)
  • Plate / Machined (Type 01, 05)

Packaging

Packaging :

  • Wooden Case / Pallet
  • Export Seaworthy Packing

 

Most Ordered EN 1092-1 Sizes – Fast Turnaround

These are the DN, PN and type combinations we get asked for most often, based on our recent supplied projects below. Fastest to quote and forge – other sizes are made to your drawing.

Frequently Enquired Combinations
Weld-Neck (Type 11) & Slip-On (Type 01) – DN
DN15DN25DN32DN50DN65DN80DN100DN150DN200DN300
Large-Bore & Custom Projects – DN
DN500DN600DN900DN1000
PN Classes Most Enquired
PN10PN16PN25PN40PN100

Confirm your exact DN, PN, type and material on WhatsApp for a same-day quote – other combinations are made to order, dispatch time confirmed at enquiry.

 

EN 1092-1 Flange Types

EN 1092-1 groups flanges into fourteen construction types. The type number stays the same across every PN class, so a Type 11 flange is always a weld-neck flange whether it is PN10 or PN400.

Type 01 – Plate (Slip-On) Flange

  • Welded over the pipe end, front and back fillet weld

Type 02 – Loose Plate w/ Weld-On Collar

  • Flange ring rotates freely over a welded collar

Type 04 – Loose Plate w/ Weld-Neck Collar

  • Loose ring over a tapered weld-neck collar

Type 05 – Blind Flange

  • Solid disc, no bore, used to close a line end

Type 11 – Weld-Neck Flange

  • Forged, tapered hub, full-penetration butt weld to pipe

Type 12 – Hubbed Slip-On Flange

  • Short hub, welded over the pipe, top and bottom fillet

Type 13 – Hubbed Threaded Flange

  • Internal NPT/BSP thread, no welding required

Type 21 – Integral Flange

  • Forged as one piece with the pipe or fitting body

Type 32 – Weld-On Plate Collar

  • Collar only, pairs with a Type 02 loose ring

Type 33 – Lapped Pipe End

  • Stub end for a loose backing flange, PN6-PN40

Type 34 – Weld-Neck Collar

  • Tapered collar, pairs with a Type 02/04 loose ring

Type 35 – Weldring Neck

  • Short neck ring for a loose flange assembly

Type 36 – Pressed Collar, Long Neck

  • Pressed (not forged) collar, extended neck length

Type 37 – Pressed Collar

  • Pressed (not forged) collar, standard neck length

 

EN 1092-1 Blind, Slip-On & Weld-Neck Flange Manufacturer – PN6 to PN400

Forged flanges shipped to the USA, Ireland, the Netherlands, Switzerland and Israel, Type 01 to Type 37, PN6 to PN400.

Send Flange Drawing / Get Quote
WhatsApp Enquiry

 

EN 1092-1 Flange Facing Types

Type A – Flat Face

Type B1/B2 – Raised Face

Type C – Tongue Face

Type D – Groove Face

Type E – Spigot Face

Type F – Recess Face

Type G – O-Ring Spigot

Type H – O-Ring Groove

Spigot (E) and recess (F) faces are always ordered together as a mating pair, as supplied on a recent USA Type 12 order. Types G and H are only made in PN10 to PN40; Types C, D, E, F, G and H are not made in PN2.5 or PN6.

 

EN 1092-1 PN Pressure Rating Chart

Not every flange type is made in every PN class. Weld-neck (Type 11) and integral (Type 21) flanges cover the full PN2.5-PN400 range; collar and lapped-end types (32-35) top out at PN40, and pressed collars (36-37) at PN16.

Flange Type Lowest PN Highest PN
Type 01 – Plate/Slip-On PN2.5 PN100
Type 05 – Blind PN2.5 PN100
Type 11 – Weld-Neck PN2.5 PN400
Type 12 – Hubbed Slip-On PN6 PN100
Type 13 – Hubbed Threaded PN6 PN100
Type 21 – Integral PN2.5 PN400
Type 32/33/34 – Collars & Lapped Pipe End PN6 PN40
Type 35 – Weldring Neck PN2.5 PN40
Type 36/37 – Pressed Collar PN2.5 PN16

 

EN 1092-1 Flange Dimensions – PN16 & PN40

PN16 and PN40 are the most commonly enquired classes. Full dimension charts for PN2.5 through PN400, every DN size, are shared as a PDF on request.

EN 1092-1 Flange Dimension Diagram

PN16 – Weld-Neck Flange (Type 11), mm

Bolts (No. x Size) Bolt Hole Dia. Bolt Circle Dia. Outside Dia. DN
4 x M12 14 65 95 15
4 x M16 18 110 150 40
4 x M16 18 125 165 50
8 x M16 18 160 200 80
8 x M16 18 180 220 100
8 x M20 22 240 285 150
12 x M20 22 295 340 200
12 x M24 26 410 460 300
20 x M30 33 650 715 500
20 x M33 36 770 840 600

PN40 – Weld-Neck Flange (Type 11), mm

Bolts (No. x Size) Bolt Hole Dia. Bolt Circle Dia. Outside Dia. DN
4 x M12 14 65 95 15
4 x M16 18 110 150 40
4 x M16 18 125 165 50
8 x M16 18 160 200 80
8 x M20 22 190 235 100
8 x M24 26 250 300 150
12 x M27 30 320 375 200
16 x M30 33 450 515 300
20 x M39 42 670 755 500
20 x M45 48 795 890 600

Looking for the complete PN16 dimension chart across every DN size, with weight tables? See our detailed PN16 Flange Dimensions & Weight Guide. This page covers EN 1092-1 across all PN classes (PN2.5 to PN400) and all fourteen flange types.

 

EN 1092-1 Flange Weight

Flange weight depends on DN, PN class, flange type and material density, so a single generic weight table would be misleading. A size and material specific weight chart for your DN/PN/type combination is shared as a PDF on request – send your drawing or size list on WhatsApp and we will return exact weights.

 

EN 1092-1 Weld-Neck Flange Wall Thickness & End Preparation

Wall thickness S ≤ 3mm: square cut ends supplied as standard
Wall thickness 3mm < S < 22mm: 30° bevel with 1.6mm root face
Where flange wall exceeds pipe wall, bore is chamfered at 15° to match
Bevel angle and root face made to your WPS/pipe spec on request

 

EN 1092-1 Flange Material

Ramesh Steel Corporation forges EN 1092-1 flanges to the full material range buyers order – carbon steel, alloy steel, stainless steel, duplex, nickel alloy, titanium, copper-nickel and aluminium.

Carbon & Alloy Steel :

  • ASTM A105 / A105N
  • ASTM A350 LF2
  • ASTM A182 F11, F22, F91
  • EN P250GH, P280GH, P355NH/NL2

Stainless Steel :

  • ASTM A182 F304 / F304L
  • ASTM A182 F316 / F316L / F316Ti
  • ASTM A182 F321, F317L

Duplex & Super Duplex :

  • ASTM A182 F51 (UNS S31803)
  • ASTM A182 F60 (UNS S32205)
  • ASTM A182 F53 (UNS S32750)
  • ASTM A182 F55 (UNS S32760 / Zeron 100)

Nickel Alloys :

  • Inconel 600 / 625 (UNS N06600/N06625)
  • Incoloy 800 / 825 (UNS N08800/N08825)
  • Monel 400 (UNS N04400)
  • Hastelloy C276 / C22 (UNS N10276/N06022)

Titanium :

  • Grade 2 (ASTM B381 F2)
  • Grade 5 / Ti-6Al-4V (ASTM B381 F5)

Copper-Nickel & Aluminium :

  • Copper-Nickel 90/10 (UNS C70600)
  • Copper-Nickel 70/30 (UNS C71500)
  • EEMUA 234 Cu-Ni flanges
  • Aluminium forgings (ASTM B247)

 

EN 1092-1 Flange Manufacturer in India – Duplex, Nickel Alloy, Stainless & Carbon Steel Forgings

Full material range forged and machined in-house, EN 10204 3.1 MTC issued with every batch.

Request Material Quote
WhatsApp Enquiry

 

DIN EN 1092-1, BS EN 1092-1 & National Standard Equivalents

EN 1092-1 is a single European standard, adopted with a national prefix in each member country. All of these refer to the identical flange dimensions and pressure classes.

DIN EN 1092-1 (Germany)
BS EN 1092-1 (United Kingdom)
NF EN 1092-1 (France)
UNI EN 1092-1 (Italy)
UNE EN 1092-1 (Spain)
NEN EN 1092-1 (Netherlands)
ÖNORM EN 1092-1 (Austria)
SN EN 1092-1 (Switzerland)
SS EN 1092-1 (Sweden)
DS EN 1092-1 (Denmark)
PN EN 1092-1 (Poland)
NS EN 1092-1 (Norway)
SFS EN 1092-1 (Finland)
CSN EN 1092-1 (Czech Republic)
I.S. EN 1092-1 (Ireland)
ISO 7005-1 (closely corresponds)

Legacy standards EN 1092-1 replaced: DIN 2527 (blind flanges), DIN 2573/2576 (plate/slip-on flanges), DIN 2631-2638 (weld-neck flanges), DIN 2641/2642 (lapped flanges), DIN 2655/2656 (loose flanges). Still used as legacy aliases by some buyers – we cross-reference these on request.

 

EN 1092-1 vs ASME B16.5 – Key Differences

EN 1092-1 and ASME B16.5 are both flange standards but are not directly interchangeable. Check which one your project drawing calls for before ordering.

Rating system: EN 1092-1 uses PN classes (PN6, PN16, PN40 etc.); ASME B16.5 uses Class ratings (150, 300, 600 etc.)
Sizing: EN 1092-1 is metric, sized by DN; ASME B16.5 is sized by NPS (inches)
Bolting: Bolt circle diameter and bolt-hole count/size differ between the two standards for the same nominal size
Facing: Both offer raised-face and flat-face options, but raised-face height and finish differ by standard
We supply flanges to either standard, and dual-drilled flanges where a project needs both bolt patterns – confirm on your enquiry

 

EN 1092-1 Flange Exporter to Europe, USA & the Middle East

PN2.5 to PN400, Type 01 to Type 37, with EN 10204 3.1 documentation on every shipment.

Request Export Quote

 

Recent EN 1092-1 Flange Supplied Projects

Q

PN100 flanges, EN 10204 3.1 – EN 1092-1 PN100 or ASME B16.5 Class 600/900 as specified, for a Yemen buyer.

Q

DN150 PN16 hubbed slip-on flange – raised face, for a California, USA buyer.

Q

BS EN 1092-1 PN16 slip-on flanges – for an Ireland buyer.

Q

Weld-neck flanges, Type 11 – DN25 to DN350, PN16, 316Ti (X6CrNiMoTi17-12-2), for a Florida, USA buyer.

Q

Type 01 flat welding flanges – DN25 to DN200, PN25, P280GH carbon steel, for a Vietnam buyer.

Q

Forged flanges, EN 10204 3.1 – PN6/10/16/25/40, carbon steel, dual EN 1092-1 & ASME B16.5 Class 150 dimensions, for an Italy buyer.

Q

Type 12 hubbed slip-on, 316L – spigot (E) & recess (F) face pairs, DN25 to DN65, plus Type 11/A DN80, PN16, for a USA buyer.

Q

Custom DN900 flange, 316L – Type 01, PN10, 20mm thickness, for an Israel buyer.

Q

Weld-neck flange, Type 11 – DN65, stainless steel, PN16, for a Dubai, UAE buyer.

Q

Weld-neck flange, Type 11/B1 – SS 316, DN32, PN40/16, for a Switzerland buyer.

Q

Alloy C22 (2.4602) reducer & carbon steel flanges – blind and slip-on flanges DN600 PN16 P355NH, slip-on DN50, Type 11/B1 weld-on flange DN15 PN40 with EN 10204 3.1, for a Netherlands buyer.

Q

Type 01 flat welding flange, DN1000 – PN16, P355NL2 low-temperature steel, for a Netherlands buyer.

Send Your EN 1092-1 Requirement on WhatsApp

 

Export Network – Countries We Ship To

Ramesh Steel Corporation ships EN 1092-1 flanges to the Americas, the Middle East, Europe, Africa and Asia-Pacific. Our recent supplied projects above cover the USA, Ireland, Netherlands, Switzerland, Italy, Israel, Vietnam, Yemen, Dubai and more – the network below is where we regularly quote and ship.

Americas
USAUSA
CanadaCanada
Middle East
UAEUAE
Saudi ArabiaSaudi Arabia
QatarQatar
OmanOman
IsraelIsrael
YemenYemen
Europe & UK
UKUK
IrelandIreland
NetherlandsNetherlands
SwitzerlandSwitzerland
GermanyGermany
SpainSpain
ItalyItaly
TurkeyTurkey
Africa
South AfricaSouth Africa
NigeriaNigeria
EgyptEgypt
KenyaKenya
Asia-Pacific
MalaysiaMalaysia
VietnamVietnam
SingaporeSingapore
ThailandThailand
PhilippinesPhilippines
IndonesiaIndonesia
South KoreaSouth Korea
JapanJapan
ChinaChina
Hong KongHong Kong
AustraliaAustralia

 

Delivery Estimate & Freight Timelines

Ex-Works Mumbai

Confirmed drawing/PO, standard sizes dispatch fastest; custom-drawing orders confirmed at enquiry.

Ocean Freight

Lowest per-kg cost for bulk flange orders; transit time depends on discharge port.

Air Freight (Priority)

For shutdown-critical or tender-deadline orders needing fast turnaround.

Port-Wise ETA on Request

Send your discharge port and quantity for a laden-on-board date estimate.

UAEUAE6-7 days
OmanOman5-6 days
QatarQatar7 days
Saudi ArabiaSaudi Arabia7-8 days
BahrainBahrain9-10 days

Middle East transit times shown are typical sea-freight, port-to-port, from Mumbai. For the USA, Europe, Africa and Asia-Pacific, send your discharge port on WhatsApp for a firm ETA – ocean transit varies significantly by route and vessel schedule.

 

FAQs – EN 1092-1 Flanges

What is EN 1092-1?

EN 1092-1 is the European standard for steel flanges, covering pressure ratings from PN2.5 to PN400 in flange types from plate (slip-on) through weld-neck, blind, threaded and integral. It replaced older national standards such as DIN 2527, DIN 2573 and DIN 2631.

What is the difference between EN 1092-1 Type 01 and Type 11?

Type 01 is a plate (slip-on) flange for welding, fitted over the pipe end. Type 11 is a weld-neck flange. It has a tapered hub and welds straight to the pipe with a full weld. This makes it stronger under pressure and fatigue.

Is EN 1092-1 the same as DIN or BS flanges?

DIN EN 1092-1 and BS EN 1092-1 both refer to the same European standard, adopted with a national prefix. Germany calls it DIN EN 1092-1, the UK calls it BS EN 1092-1, and most European countries have their own national-prefix version of the identical standard.

What is the difference between EN 1092-1 Type 11 and Type 32/34/35?

Type 11 is a one-piece forged weld-neck flange. Types 32, 34 and 35 are loose flanges. A collar is welded to the pipe, but the flange ring itself is not welded. This lets the ring turn freely to line up the bolt holes.

What PN ratings are available in EN 1092-1 flanges?

EN 1092-1 covers PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320 and PN400. Not every type comes in every PN class. Weld-neck (Type 11) and integral (Type 21) cover the widest range, up to PN400.

What materials are EN 1092-1 flanges available in?

Ramesh Steel Corporation supplies EN 1092-1 flanges in carbon steel, alloy steel, stainless steel (304/316 series), duplex and super duplex, nickel alloys (Inconel, Monel, Hastelloy, Incoloy), titanium, copper-nickel and aluminium.

What is the difference between EN 1092-1 Type 12 face E and face F?

Face E is a spigot. It is a raised ring that fits into the other flange. Face F is a recess, the groove that the spigot fits into, and the two are always ordered together as a pair.

Is EN 1092-1 compatible with ASME B16.5?

Not directly. EN 1092-1 uses PN classes and metric DN sizes. ASME B16.5 uses Class ratings and NPS sizes. The bolt circle and bolt holes also differ between the two. Always check your drawing and confirm the bolt pattern before ordering.

Our Products

Why Ramesh Group is a Trusted Global Manufacturer?

  • Forge and machine EN 1092-1 flanges from PN2.5 to PN400, Type 01 to Type 37, to DIN EN 1092-1 and BS EN 1092-1 dimensions
  • Supply EN 1092-1 flanges to Europe as per CBAM requirements, cross-referenced to DIN, BS, NF and UNI national equivalents
  • Exporter of EN 1092-1 weld-neck (Type 11) and blind (Type 05) flanges suitable for corrosion resistant environments
  • Every EN 1092-1 flange ships with MTC EN 10204 3.1/3.2, matched to the exact DN and PN on your drawing
  • EN 1092-1 flanges available with NACE MR0175 sour-service compliance in duplex and super duplex grades
  • Over 250 fabricators and traders across the Middle East and Europe import our EN 1092-1 flanges, backed by our ADNOC-approved manufacturing status
  • Supplying EN 1092-1 flanges to stockists and wholesalers of piping materials in Saudi Arabia at resale price
  • Keep custom sizes ex-stock with stockholders in the USA and Mexico for urgent replacement requirements