Duplex 2205 Flange Summary
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
Table of Content
Dual-Phase ASTM A182 F51 UNS S31803 Blind Flanges Manufacturer in India With PREN ≥ 34
Mortec Manufacturing Co is an established Duplex 2205 Flange Manufacturer in India. We forge ASTM A182 F51/F60 flanges from traceable UNS S31803/S32205 billet. All work happens at our own Mumbai plants. Each blank is heat-numbered before reaching the CNC line. Hot forging is followed by solution annealing and rapid quenching. This locks the ferrite-austenite balance close to 50:50. PREN stays at 34 and above on the finished face.
Machining follows ASME B16.5, ASME B16.47 Series A/B, or MSS SP-44. We offer RF, FF, RTJ facing in smooth or serrated finish. Custom bore drilling is done as per your isometric. As a direct Duplex 2205 Flange Supplier in India, we hold stock. Weld Neck, Slip-On, Blind, Socket Weld and Threaded types are ex-stock. Sizes range from Class 150 through 2500. Dispatch happens within three to five days. Every order includes PMI reports and hydrostatic test records. We also provide EN 10204 3.1 or 3.2 mill test certificates.
Duplex 2205 Flange Specification
Every dispatch includes an original MTC pack, ensuring complete traceability.
Alloy 2205 Pipe Flanges Face & Thread Options
- RF, FF, RTJ facing
- NPT, BSPT, BSPP thread
SAF 2205 Flange Dimensional Standards
- ASME B16.5
- ASME B16.47 Series A & B
- MSS SP-44
WNR 1.4462 Flanges Manufacture & Finish
- Hot-forged blank, CNC machined
- Smooth, serrated, spiral-serrated finish
A182 S31803 Slip On Flange Testing Methods
- Hydrostatic, PMI, hardness, RT
- Third-party inspection (TPI) on request
SA182 S31803 Orifice Flanges Sour & Chloride Compliance
- NACE MR0175 / MR0103
- NORSOK M-650 MDS-D44 / D47
Duplex Flange Supporting Material & Packing
- Gaskets, stud bolts, ring joints
- Anti-tarnish, export-grade packing
Duplex 2205 Flange Raw Material Source
- Billets/bars to ASTM A276 / A479
- Full heat-to-flange traceability
Duplex Stainless Steel Flange Quality Systems
- ISO 9001:2015 certified plant
- Factory / client audits welcome
Duplex 2205 Flange Manufacturer In Mumbai Since 2012
Share your size, class and facing - we confirm ex-stock availability the same business day.
Alloy 2205 Pipe Flanges Dimension
Most-ordered sizes are held ex-stock across every class - larger and smaller sizes are available to mill order.
Available Sizes
Full Dimensional Charts
OD, bolt-circle, thickness and bolt-hole data per class are issued as an Excel/PDF chart with every RFQ, matched to the ASME B16.5 / B16.47 tables for the class you select.
Request Dimension ChartASTM A182 F52 Flange Size Chart
Class 150 RF dimensions per ASME B16.5 for the most-ordered popular sizes.
| NPS | DN | OD | Bolt Circle | Bolt Holes | Bolt Size | Thickness |
|---|---|---|---|---|---|---|
| 2″ | DN50 | 152 | 121 | 4 | ⅝″ | 19 |
| 4″ | DN100 | 229 | 190 | 8 | ⅝″ | 24 |
| 6″ | DN150 | 279 | 241 | 8 | ¾″ | 25 |
| 8″ | DN200 | 343 | 298 | 8 | ¾″ | 29 |
| 12″ | DN300 | 483 | 432 | 12 | ⅞″ | 32 |
ASTM A182 UNS S31803 Flange Finishes
Face finish is matched to gasket type and service - confirm your preference at RFQ stage.
Duplex Flange Pressure Rating
Rated by ASME B16.5 pressure class within a −51°C to 315°C (−60°F to 600°F) design temperature window.
150#Class 150
Lightest section, broadest ex-stock availability across every Duplex 2205 flange type.
300#Class 300
Most-specified class for medium-pressure process and offshore piping.
600#Class 600
Common in gas gathering and injection lines where RTJ facing is preferred.
900#Class 900
Thicker hub section for high-pressure wellhead and manifold connections.
1500#Class 1500
Specified for high-pressure sour and subsea tie-in packages.
2500#Class 2500
Heaviest section in the range, used on choke and kill line connections.
Need the exact bar/psi pressure-temperature chart for your design point? Request it with your RFQ.
Duplex Steel Flange Types
Duplex 2205 Flange Manufacturer in India producing Socket Weld, Threaded, Lap Joint, Spectacle Blind and Orifice types.
Duplex 2205 Weld Neck Flange
ASME B16.5 • ½″–24″- Tapered hub, full penetration weld
- Best for cyclic/high-pressure lines
SAF 2205 Slip-On Flange
ASME B16.5 • Class 150–600- Fast-fit, lower fabrication cost
- Suited to low-pressure service
UNS S31803 Blind Flange
ASME B16.5 • All Classes- Seals pipe ends & vessel nozzles
- No bore machining required
Alloy 2205 Socket Weld Flange
ASME B16.5 • ≤4″ NB- Bore-fit socket, single fillet weld
- Good for small high-pressure lines
ASTM A182 F51 Threaded Flange
ASME B16.5 • ≤4″ NB- Weld-free, bolted assembly
- Preferred in hazardous-area work
WNR 1.4462 Lap Joint Flange
ASME B16.5 • With Stub End- Free rotation for bolt alignment
- Ideal for frequent dismantling
ASTM A182 S31803 Spectacle Blind Flange
MSS SP-44 • Line Isolation- Figure-8 open/closed positive block
- Standard for maintenance isolation
Duplex Stainless Steel 2205 Orifice Flange
AGA-3 • Class 300–900- Jack-screw tapped for meter runs
- Used for custody-transfer flow metering
UNS S31803 Flange Chemical Composition
Balanced chromium-nickel-molybdenum-nitrogen chemistry that gives Duplex 2205 its 50:50 ferrite-austenite structure.
WNR 1.4462 Flanges Mechanical Properties
Minimum room-temperature properties as required by ASTM A182 for solution-annealed F51/F60 forgings.
SA182 UNS S31803 Plate Flanges Material Equivalent
Duplex 2205 carries an equivalent designation in every major piping standard.
ASTM / ASME (USA)
- UNS S31803 - ASTM A182 F51
- UNS S32205 - ASTM A182 F60
- ASTM A276 / A479 (Bar)
- ASME SA182 (Flanges)
DIN / EN (Germany)
- Werkstoff 1.4462
- EN 10088-3 X2CrNiMoN22-5-3
- EN 10222-5 (Forgings)
JIS (Japan)
- SUS 329J3L
- JIS G3214 (Flanges)
AFNOR (France)
- Z3CND22-05Az
- NF EN 10088-3
NORSOK (Norway)
- MDS-D44 (Bar/Forgings)
- MDS-D47 (Castings)
Trade Names
- SAF 2205®
- Alloy 2205 / DP3
Offer Export-Grade SAF 2205 Slip On and Weld Neck Flange Ready-Stock Inventory With Pressure and Tensile Test
Duplex Flange HSN Code & Export Documents
Correct classification keeps your shipment moving smoothly through customs in South Africa, UAE, Kenya, Canada.
Duplex 2205 Flange Exporter In India To Durban & Richards Bay Ports
Container-ready Duplex 2205 flanges packed and documented for South African customs clearance.
SAF 2205 Flange PREN & Pitting-Crevice Corrosion Resistance
Pitting Resistance Equivalent Number (PREN = %Cr + 3.3×%Mo + 16×%N) ranks chloride resistance across grades.
Duplex 2205 Vs Super Duplex 2507 Flange
Both are ferritic-austenitic grades; 2507 adds extra chromium-molybdenum margin at higher cost.
Duplex 2205 (S31803/S32205)
- PREN: ≥ 34–35
- Yield Strength: 65 ksi / 450 MPa min
- Best For: Desalination, general process, marine
- Relative Cost: Lower
Super Duplex 2507 (S32750)
- PREN: ≈ 42–43
- Yield Strength: 80 ksi / 550 MPa min
- Best For: Subsea, sour gas, high-chloride injection
- Relative Cost: Higher
ASME SA182 UNS S31803 Threaded Flange Applications & Industries
These are the industries that specify Duplex 2205 flanges most often, and why.
A182 S32205 Lap Joint Flange Stocked & Dispatched Worldwide
Ex-stock inventory and mill-order dispatch to buyers across these countries and beyond.
UAE
Turkey
Canada
UK
Saudi Arabia
SingaporeUSA
Mexico
Thailand
Italy
NetherlandsGermany
Philippines
Malaysia
Uganda
Indonesia
South Africa
Vietnam
VenezuelaASTM A182 F51 Flange Supplier In Dubai - NACE MR0175 Compliant
Sour-service qualified Duplex 2205 flanges ready for GCC project inspection and dispatch.
Duplex 2205 Vs 316L Stainless Steel Flange
Duplex 2205 is the common upgrade path from 316L wherever chloride exposure or line weight becomes a concern.
Duplex 2205 (S31803/S32205)
- Yield Strength: 450 MPa min - roughly 2× 316L
- PREN: ≥ 34–35
- Best For: Chloride, brackish and sour duty
- Relative Cost: Higher per kg, thinner sections
316L Stainless Steel
- Yield Strength: ≈ 170 MPa min
- PREN: ≈ 24
- Best For: General process, mild chemical duty
- Relative Cost: Lower base material cost
Flange Duplex Delivery Estimate
Typical despatch windows once your size, class and quantity are confirmed against our ex-stock inventory.
Ex-Stock Dispatch
- Confirmed sizes leave the plant in 3–5 days
Sea Freight
- 15–35 days port-to-port from Mumbai/Nhava Sheva
Air Freight
- 3–6 days for urgent shutdown/spares orders
Country-Specific ETA
- Door-to-port timeline confirmed at RFQ stage
Duplex 2205 Flange FAQs
Quick answers to the questions buyers ask us most before placing an order.
What dimensional standard applies to Alloy 2205 Pipe Flanges?
Alloy 2205 Pipe Flanges follow ASME B16.5 and B16.47 standards.
Is SAF 2205 Flange the same as Duplex 2205?
Yes, SAF 2205 Flange is simply Duplex 2205's trade name.
What does WNR 1.4462 Flanges designation mean?
WNR 1.4462 Flanges is the European designation for Duplex 2205.
Why choose Duplex Stainless Steel Flange over 316L?
Duplex Stainless Steel Flange gives higher strength and chloride resistance.
Is A182 S31803 Slip On Flange available ex-stock?
Yes, A182 S31803 Slip On Flange ships ex-stock, Class 150–600.
Authorized Supplier For The Following Companies - Material At Reseller Price For Traders
