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.
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)
| NPS | Pipe OD | SCH 10S | SCH 40 | SCH 80 | SCH 160 | XXS |
| ½″ | 21.3 | 2.11 | 2.77 | 3.73 | 4.78 | 7.47 |
| 1″ | 33.4 | 2.77 | 3.38 | 4.55 | 6.35 | 9.09 |
| 2″ | 60.3 | 2.77 | 3.91 | 5.54 | 8.74 | 11.07 |
| 3″ | 88.9 | 3.05 | 5.49 | 7.62 | 11.13 | 15.24 |
| 4″ | 114.3 | 3.05 | 6.02 | 8.56 | 13.49 | 17.12 |
| 6″ | 168.3 | 3.40 | 7.11 | 10.97 | 18.26 | 21.95 |
| 8″ | 219.1 | 3.76 | 8.18 | 12.70 | 23.01 | 22.23 |
| 10″ | 273.1 | 4.19 | 9.27 | 12.70 | 28.58 | 25.40 |
| 12″ | 323.9 | 4.57 | 10.31 | 17.48 | 33.32 | 25.40 |
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
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
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
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
ASME B16.5 • ≤4″ NB
- Counterbore seats the pipe end squarely
- Single external fillet weld on small bore
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
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
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.
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.
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.