ASTM A182 F55 Super Duplex Flanges Manufacturer Since 2012 UNS S32760, 25% Chromium Duplex, WNRF • SORF • BLRF • SWRF • LJRF Types PMI Verified Lots, EN 10204 3.1 MTC, Shipped To 15+ Countries

ASTM A182 F55 Flanges

ASTM A182 F55 Flanges Snapshot

Grade & UNSASTM A182 F55 / ASME SA182 F55, UNS S32760
Dimensional StandardASME B16.5, B16.47 Series A & B, MSS SP-44
Outside Diameter RangeNPS ½″ to 24″ • 26″ to 60″ to order
Bore Wall ThicknessSCH 10S, 40, 80, 160 and XXS
Class Range150#, 300#, 600#, 900#, 1500#, 2500#
PREN (Min)≥ 40  (Cr + 3.3 × [Mo + 0.5W] + 16N)
Key Alloying Elements25Cr • 7Ni • 3.5Mo • Cu, W & N added
FormsHot Forged Blank, CNC Machined
MTC CertificateEN 10204 3.1 and 3.2
Third-Party InspectionBV, SGS, TUV, Lloyd’s, DNV On Request
Delivery TimeEx-Stock 3–5 Days • Forged To Order 6–8 Wks
OriginForged & Machined In Mumbai, India
PREN ≥ 40
Super Duplex
Tungsten and copper bearing chemistry proved on each heat
550 MPa
Minimum Yield
Lets designers trim section weight without losing margin
Sour Rated
NACE MR0175
ISO 15156-3 conforming stock released against your envelope
Ready Stock
Class 150–2500
Repeat-order sizes stay blanked and waiting on the floor
Own Forge
Mumbai Plant
Billet, forging, anneal and machining handled under one roof
Free Consult
Grade Desk
Engineers settle schedule, drilling and facing before you order
ASTM A182 F55 Flanges

 

at glance

Mortec At A Glance

Established

Since 2012 15+ yrs experience

Manufacturing Units

2 in-house units Taloja & Mazgaon

Stockyard Area

8,850+ sq.ft Ready-stock inventory

Certifications

ISO 9001:2015, PED GST, IEC & MSME

Clientele

100+ clients India & export markets

Export Reach

15+ countries GCC, Africa & APAC

Testing Offered

Tensile, hardness & PMI MTC EN 10204 3.1

Shipment Documents

Invoice, Packing List COO, COI, MTC, BL & Lab Report

Get UNS S32760 Weld Neck Flange Manufacturer In India Machined Across Schedule 40 to XXS

Buyers choose ASTM A182 F55 Flanges when 22Cr duplex lines experience pitting. Projects also specify F55 when PREN requirements exceed 40. Mortec Manufacturing Co forges each F55 flange using UNS S32760 material. Our Mumbai units solution anneal above the sigma-phase window carefully. We water quench rapidly, preserving ferrite-austenite balance and corrosion resistance. This maintains the tungsten-copper corrosion margin across every finished flange face.

Every weld neck bore is CNC machined to required pipe schedules. Options include Schedule 10S, 40, 80, 160 and XXS wall thicknesses. Raised, flat and ring-joint faces meet applicable dimensional standards. Machining follows ASME B16.5, B16.47 Series A/B or MSS SP-44. Our forge handles drilling, ASTM G48 witnessing and container booking directly. Ex-stock classes typically ship within three to five working days. EN 10204 3.1 or 3.2 certificate packs accompany every shipment.

01 · Specification

ASTM A182 F55 Flanges Specification

As an ASTM A182 F55 Flanges Manufacturer in India, we offer complete specifications, dimensions, and certification details.

ASTM A182 F55 Flanges Specification

 

UNS S32760 Slip On Flange Face & Thread Options

  • RF, FF, RTJ, tongue-groove, male-female
  • NPT, BSPT and BSPP thread forms

F55 Duplex Weld Neck Flange Sour Service Compliance

  • NACE MR0175 / ISO 15156-3 conforming
  • NORSOK M-650 and M-630 route on request

ASTM A182 Gr F55 Socket Weld Flanges Non-Destructive Testing

  • Hydrostatic, PMI, ultrasonic, dye penetrant
  • Charpy V-notch at −46 °C as supplementary

A182 F55 Duplex Stainless Blind Flange Surface Finish

  • Pickled and passivated, shot-blast mill finish
  • Smooth, concentric, spiral serrated or lapped

UNS S32760 Gr. F55 Reducing Flange Marking & Traceability

  • Heat number, grade, class and size stamped
  • Low-stress stamps cross-referenced to the MTC

Super Duplex Steel S32760 Long Neck Flanges Export Packing

  • VCI wrap, face protectors, moisture barrier
  • ISPM-15 fumigated plywood cases and pallets

A182 Gr F55 Plate Flanges Raw Material Source

  • Billet and bar to ASTM A276 / A479
  • Forging stock also accepted to EN 10222-5

F55 Super Duplex Puddle Flanges Quality Systems

  • ISO 9001:2015 certified manufacturing units
  • Client and third-party plant audits welcome

SA 182 F55 UNS S32760 Orifice Flanges Heat Treatment

  • Solution annealed and water quenched as per ASTM A182
  • Controlled heat treatment with ferrite and phase-balance verification
02 · Bore Wall

Schedule Chart of F55 Duplex Weld Neck Flange

Weld neck and long neck bores match pipe wall thickness for smooth internal weld alignment, per ASME B36.19M and B36.10M.

Bore Wall Thickness By Schedule (mm)
NPSPipe ODSCH 10SSCH 40SCH 80SCH 160XXS
½″21.32.112.773.734.787.47
1″33.42.773.384.556.359.09
2″60.32.773.915.548.7411.07
3″88.93.055.497.6211.1315.24
4″114.33.056.028.5613.4917.12
6″168.33.407.1110.9718.2621.95
8″219.13.768.1812.7023.0122.23
10″273.14.199.2712.7028.5825.40
12″323.94.5710.3117.4833.3225.40

ASTM A182 F55 Flanges Manufacturer In Mumbai Since 2012

Send the size, class and bore schedule; forged stock and price come back before the day closes.

Request Quote Now
03 · Product Range

Common Types of ASTM A182 Grade F55 Flange

We are a reliable ASTM A182 F55 Flanges Supplier in India, with standard sizes and thread types ready in stock.

F55 Duplex Weld Neck Flange

F55 Duplex Weld Neck Flange

ASME B16.5 • ½″–24″
  • Tapered hub carries the butt weld away from the face
  • Bore cut to the exact pipe schedule ordered
UNS S32760 Slip On Flange

UNS S32760 Slip On Flange

ASME B16.5 • Class 150–600
  • Slides over the pipe for quicker site fit-up
  • Two fillet welds, lower fabrication hours
ASTM A182 F55 UNS S32760 Blind Flange

ASTM A182 F55 UNS S32760 Blind Flange

ASME B16.5 • All Classes
  • Solid disc closes nozzles and future tie-ins
  • Heaviest section, no bore machining needed
ASTM A182 Gr F55 Socket Weld Flanges

ASTM A182 Gr F55 Socket Weld Flanges

ASME B16.5 • ≤4″ NB
  • Counterbore seats the pipe end squarely
  • Single external fillet weld on small bore
SA 182 F55 Threaded Flange

SA 182 F55 Threaded Flange

ASME B16.5 • NPT / BSPT
  • Bolted assembly with no hot work on site
  • Chosen for classified and utility areas
ASTM A182 Gr F55 UNS S32760 Lap Joint Flange

ASTM A182 Gr F55 UNS S32760 Lap Joint Flange

ASME B16.5 • With Stub End
  • Rotates freely to line up awkward bolt holes
  • Backing ring never touches the process fluid

Order SA 182 F55 UNS S32760 Slip On and Blind Flange Priced Against Today's Nickel Base Rate

04 · Composition

UNS S32760 Gr. F55 Reducing Flange Chemical Composition

Chemical Composition – ASTM A182 F55 / UNS S32760 (% by weight)
Cr24.0–26.0Chromium
Ni6.0–8.0Nickel
Mo3.0–4.0Molybdenum
Cu0.50–1.00Copper
W0.50–1.00Tungsten
N0.20–0.30Nitrogen
C0.030 maxCarbon
Mn1.00 maxManganese
Si1.00 maxSilicon
P0.030 maxPhosphorus
S0.010 maxSulfur
FeBalanceIron
05 · Strength Data

Mechanical Properties of F55 Super Duplex Puddle Flanges

Tensile Strength750 MPa / 109 ksi min
Yield Strength (0.2% Offset)550 MPa / 80 ksi min
Elongation In 2″25% min
Reduction Of Area45% min
06 · Cross-Reference

ASTM A182 Gr F55 UNS S32760 Lap Joint Flange Equivalent

USAASTM / ASME (USA)

  • UNS S32760
  • ASTM A182 F55 / ASME SA182 F55
  • ASTM A276 & A479 (Bar)
  • ASTM A815 (Wrought Fittings)

GermanyDIN / EN (Germany)

  • Werkstoff 1.4501
  • EN 10088-3 X2CrNiMoCuWN25-7-4

European UnionEuropean Union

  • EN 10222-5 (Forgings)
  • EN 1092-1 (Flange Dimensions)
  • PED 2014/68/EU Route

United KingdomBS / Trade Name (UK)

  • BS EN 10088-3 Grade 1.4501
  • Zeron 100® (proprietary trade name)

NorwayNORSOK (Norway)

  • NORSOK M-650 Manufacturer Qualification
  • NORSOK M-630 25Cr Super Duplex MDS

South AfricaSANS (South Africa)

  • SANS 1123 Drilling Tables
  • Dimensional cross-reference only
07 · Sour Service

SA 182 F55 Threaded Flange Sour Service & NORSOK Compliance

Sour-service approval depends on the service envelope. Send four values to confirm release before forging.

NACE MR0175
ISO 15156-3
NACE MR0103
NORSOK M-650
NORSOK M-630
Hardness Survey
Ferrite Balance Count
Impact Test At −46 °C
08 · Test Pack

Testing Methods of ASTM A182 Gr F55 Socket Weld Flanges

Super duplex testing focuses on metallurgy, with project QA witnessing mechanical, ferrite, hardness, PMI and corrosion tests.

Charpy V-Notch At −46 °CLow-temperature toughness check for offshore and cold-climate scopes.
Positive Material IdentificationHandheld XRF on every finished flange before it enters the packing bay.
Hydrostatic Shell TestPerformed on the assembly where the client scope calls for a pressure witness point.
Ultrasonic & Dye PenetrantVolumetric and surface examination on hub, bore and sealing face.
Third-Party WitnessBV, SGS, TUV, Lloyd’s Register or DNV attend on nominated hold points.
Global Reach

Your UNS S32760 Gr. F55 Reducing Flange Partner In UAE & Gulf

Ex-stock inventory and mill-order dispatch to buyers across the Gulf region.

Middle East & GCC
UAEDubai, UAE
UAESharjah, UAE
Saudi ArabiaDammam, Saudi Arabia
OmanMuscat, Oman

ASTM A182 F55 Flanges Exporter To Jebel Ali & Khalifa Port

Cases, wrap and paperwork reach your UAE clearing agent as one matched consignment.

Request Export Quote
09 · Comparison

F55 Vs F53 Vs F51 Forged Flange Comparison

Both are ASTM A182 duplex forgings, the key commercial difference is chloride resistance versus price per kg.

F55 – UNS S32760 (This Grade)

  • Family: 25Cr super duplex with Cu and W
  • PREN: 40 minimum required by specification
  • Tensile / Yield: 750 / 550 MPa min
  • Elongation: 25% min
  • Best For: Seawater, sour gas, acid and erosive duty

F53 – UNS S32750

  • Family: 25Cr super duplex, no W or Cu addition
  • PREN: Comparable super duplex range
  • Tensile / Yield: 800 / 550 MPa min
  • Elongation: 15% min
  • Best For: Subsea and high-strength structural piping
10 · Sealing Face

Super Duplex Steel S32760 Long Neck Flanges Face Types

Specify the flange face at enquiry stage to ensure correct gasket fit and machining allowance.

Raised Face (RF)

  • Most-ordered face across every class
  • 1.6 mm raise for Class 150 and 300
  • 6.4 mm raise from Class 400 upward

Flat Face (FF)

  • Full-face gasket contact, no raised land
  • Used against cast, lined or GRP equipment

Ring Type Joint (RTJ)

  • Groove cut for R, RX or BX rings
  • Ring gaskets ordered to ASME B16.20

Tongue & Groove (T&G)

  • Mating pair confines the gasket fully
  • Chosen where gasket blow-out is a concern

Male & Female (M&F)

  • Recessed female seats the male projection
  • Supplied as a matched pair, never singly

Lap Joint Face

  • Stub end carries the sealing surface
  • Backing flange stays free to rotate
11 · Advantages

Key Advantages Of Using A182 Gr F55 Plate Flanges

Why specifiers move to S32760 rather than staying on 22Cr duplex or stepping up to a nickel alloy.

High Strength
Cost-Effective
Lower Section Weight
Easy Machining
Good Weldability
Long Service Life
Industry Standard
Fully Recyclable
12 · Pressure Ratings

Pressure Ratings of ASTM A182 Gr F55 UNS S32760 Lap Joint Flange

ASME B16.5 class ratings vary with temperature and material group. Final pressure-temperature ratings follow your design point.

Temperature °C 600 400 1500 150 900 300 2500
400 69.4 46.3 173.6 6.5 104.2 34.7 289.3
425 57.5 38.4 143.8 5.5 86.3 28.8 239.7
500 23.5 15.7 58.8 2.8 35.3 11.8 97.9
475 34.9 23.2 87.2 3.7 52.3 17.4 145.3
100 93.2 62.1 233.0 17.7 139.8 46.6 388.3
250 83.9 55.9 209.7 12.1 125.8 41.9 349.5
300 79.6 53.1 199.1 10.2 119.5 39.8 331.8
50 100.2 66.8 250.6 19.2 150.4 50.1 417.7
200 87.6 58.4 219.0 13.8 131.4 43.8 365.0
450 46.0 30.7 115.0 4.6 69.0 23.0 191.7
325 77.4 51.6 193.6 9.3 116.1 38.7 322.6
538 11.8 7.9 29.5 1.4 17.7 5.9 49.2
-29 ~ 38 102.1 68.1 255.3 19.6 153.2 51.1 425.5
350 75.1 50.1 187.8 8.4 112.7 37.6 313.0
150 90.2 60.1 225.4 15.8 135.2 45.1 375.6
375 72.7 48.5 181.8 7.4 109.1 36.4 303.1
13 · Process

F55 Duplex Weld Neck Flange Heat Treatment

Every F55 Flange follows six controlled steps from billet to packing.

Step 1 – Billet ReleaseUNS S32760 billet is released after certificate and PMI checks.
Step 2 – Hot ForgingBillets are forged within the specified high-temperature range.
Step 3 – Solution AnnealingFlanges are solution annealed as required by ASTM A182 F55.
Step 4 – Rapid Water QuenchImmediate water quenching prevents unwanted phase formation.
Step 5 – Phase Balance CheckFerrite-austenite balance is verified before CNC machining.
Step 6 – Metallurgical ClearanceASTM A923 and ASTM G48 testing verifies material performance.
14 · Industries

Applications of SA 182 F55 UNS S32760 Orifice Flanges

Where the enquiries come from, and the service condition behind each one.

Offshore & Subsea Production
Sour Gas & H2S Service
Seawater Desalination Plants
Power Plant Cooling Circuits
Chemical & Petrochemical Process
Mining & Hydrometallurgy
Pulp & Paper Bleach Plants
Flue Gas Desulphurisation
Global Reach

From Mumbai To Nairobi - Super Duplex Steel S32760 Long Neck Flanges Ready For Dispatch

Carton and drum-packed shipments moving to buyers across Southern and East Africa.

Africa
South AfricaDurban, South Africa
South AfricaJohannesburg, South Africa
KenyaMombasa, Kenya
KenyaNairobi, Kenya
UgandaKampala, Uganda

F55 Duplex Weld Neck Flange Supplier In Durban - NACE MR0175 Compliant

South African projects get the drilling table and the sour-service paperwork in one dispatch.

Get Supplier Quote
15 · Turnaround

F55 Super Duplex Puddle Flanges Delivery Timeline

Pick the route that suits your project schedule - lead times confirmed once size, class and finish are finalized.

Ex-Stock Dispatch

Ready F55 flange sizes dispatch from our Mumbai plant within 4–6 days

Sea Freight

FCL or consolidated LCL shipments generally take 20–38 days port to port

Air Freight

Priority air shipments in around 4–7 days for critical project requirements

Country-Specific ETA

Share your delivery location and we confirm the estimated landed timeline

16 · FAQs

ASTM A182 F55 Flanges FAQs

The five questions that come up most often before a purchase order is released.

What is the equivalent of a UNS S32760 Gr. F55 Reducing Flange?

A UNS S32760 Gr. F55 Reducing Flange is equivalent to Super Duplex UNS S32760 and ASTM A182 F55.

What affects the price of SA 182 F55 UNS S32760 Orifice Flanges?

SA 182 F55 UNS S32760 Orifice Flanges pricing depends on size, class, face, quantity and testing.

Where are F55 Duplex Weld Neck Flanges commonly exported?

F55 Duplex Weld Neck Flanges are exported for oil, gas, marine and chemical projects worldwide.

What standard covers an ASTM A182 Grade F55 Flange?

An ASTM A182 Grade F55 Flange is specified for forged super duplex pressure components and flanges.

Can A182 Gr F55 Plate Flanges be supplied for export projects?

Yes, A182 Gr F55 Plate Flanges can be supplied with MTCs, inspection reports and export documentation.

ASTM A182 F55 Flanges – Why Buyers Pick Mortec
Tungsten and copper alloying holds PREN above forty
Forged blanks ready in SCH 10S through XXS bores
Every F55 flange ships with G48 and A923 reports
Drilled to SANS, EN or ASME tables on request



Certifications & Credentials
Certified to PED 2014/68/EU for the manufacture of forged steel products
Stock, distribute and trade Steel Flanges, Nuts and Bolts, and precision-machined parts in Nickel Alloys, High Temperature Alloys and Super Alloys
Since 2012, exporting Oil and Gas piping items built to NACE MR0175 / ISO 15156 across the Egypt, Tunisia, Netherlands, Azerbaijan, South Africa, Algeria, Saudi Arabia and Morocco
Hold the largest import and stock inventory of bolting accessories, in both ferrous and non-ferrous metals, in India

Authorized Supplier For The Following Companies - Material At Reseller Price For Traders

Associated Companies - ADNOC, SABIC, Saudi Aramco, GASCO, ORPIC, KNPC, QATARGAS

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