ISO 9001 Certified ASTM A182 F53 Flange Manufacturer Ex-Stock UNS S32750 Grade, MTC EN 10204 3.1 Forging Super Duplex 2507 Flanges In-House Since 2012

Super Duplex 2507 Flanges

Super Duplex 2507 Flanges Synopsis

Sizes In StockNPS ½″ to 24″ • to 60″ on order
Delivery TimeEx-Stock: 3–5 Days • Mill-Order: 6–8 Wks
Class Range150#, 300#, 600#, 900#, 1500#, 2500#
Grade & UNSASTM A182 F53, UNS S32750
PREN (Min)≈40–42.5 (Cr+3.3Mo+16N)
European DesignationW.Nr 1.4410, EN X2CrNiMoN25-7-4
FormsForged & CNC Machined
MTC CertificateEN 10204 3.1 and 3.2
Flange FaceRF, FF, RTJ
OriginManufactured In Mumbai, India
PREN ≥40
Chloride Resistance
Cr+3.3Mo+16N chemistry confirmed on every heat certificate
800 MPa Min
Tensile Strength
Roughly double the strength of standard austenitic 316L flanges
Sour & Seawater
Service Rated
NACE MR0175 / ISO 15156 compliant material on request
Ready Stock
Class 150–1500
Frequently ordered sizes and classes despatch within days
Own Forge
Mumbai Plant
Forged and machined in-house with no trading middlemen
Free Consult
Grade Desk
Metallurgists confirm class, facing and finish before you order
Super Duplex 2507 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 SAF 2507 Blind Flange Manufacturer In India Available In RF, RTJ and FF Facing

Mortec Manufacturing Co is a dedicated Super Duplex 2507 Flanges Manufacturer in India. We machine every ASTM A182 Grade F53 flange from certified UNS S32750 billet. All work happens at our own Mumbai plant. Each blank is heat-numbered before CNC turning begins. Solution annealing happens at or above 1025°C precisely. A rapid water quench follows, locking the balanced 50:50 austenite-ferrite structure. This gives the grade its PREN of roughly 40 to 42.5. It ranks among the highest in any standard duplex family. We also manufacture Super Duplex SS Orifice Flanges and SDSS 2507 Plate Flanges.

Machining follows ASME B16.5, ASME B16.47 Series A/B, 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 Super Duplex 2507 Flanges Supplier In India, we hold stock. We also supply Super Duplex Stainless Steel 2507 Threaded Flange types ex-stock. Weld Neck, Slip-On, Blind, Socket Weld and Threaded types are ex-stock. Sizes range from Class 150 through 1500. Dispatch happens within three to five days. Every order includes PMI reports and Charpy impact data. We also provide EN 10204 3.1 or 3.2 mill test certificates.

01 · Specification

Super Duplex 2507 Flanges Specification

Get your Super Duplex 2507 Flanges quote from the forge floor with MTC and NACE paperwork bundled.

Super Duplex 2507 Flange Specification

 

2507 Flange Face & Thread Options

  • RF, FF, RTJ facing
  • NPT, BSPT, BSPP thread

Super Duplex Flanges Dimensional Standards

  • ASME B16.5
  • ASME B16.47 Series A & B
  • MSS SP-44

A182 F53 Flanges Heat Treatment & Finish

  • Solution annealed ≥1025°C, water quenched
  • Smooth, serrated, lapped finish

UNS S32750 Flange Testing Methods

  • PMI, Charpy V-notch at -46°C, ASTM G48
  • Third-party inspection (TPI) on request

2507 Flange Sour & Chloride Compliance

  • NACE MR0175 / MR0103
  • ISO 15156 compliant on request

Super Duplex Flanges Supporting Material & Packing

  • Gaskets, stud bolts, ring joints
  • Anti-tarnish, export-grade packing

2507 Flange Raw Material Source

  • Billet/bar to ASTM A276 / A479
  • Full heat-to-flange traceability

Super Duplex Flanges Quality Systems

  • ISO 9001:2015 certified plant
  • Factory / client audits welcome

Super Duplex 2507 Flanges Manufacturer In Mumbai Since 2012

Share your NPS, pressure class and facing - our desk confirms ex-stock 2507 availability same day.

Request Quote Now
02 · Range

WNR 1.4410 Weld Neck Flange Dimensions

Popular Super Duplex 2507 flanges are kept ex-stock; ASME B16.5 dimensions apply to all sizes.

Popular Sizes ½″ 2″ 4″ 6″ 8″

Available Sizes

Nominal Bore½″ NB (B16.5) – 60″ NB (B16.47)
DN RangeDN 15 – DN 1500
FacingRF, FF, RTJ
Bore TypeStandard / Custom bore on request

Full Dimensional Charts

Complete OD, bolt-circle and bolt-hole dimensions for Class 150 through Class 1500 are published below per ASME B16.5. Share your size and class for an instant ex-Mumbai price on the full chart.

Request Full Dimension Chart
ASME B16.5 Flange Dimensions (mm) - OD & Bolting, All Classes
NPSDNClassODBolt CircleBolt HolesBolt Size
½″DN1515089604½″
30095664⅝″
60095664⅝″
150012082.64¾″
2″DN501501521214⅝″
3001651278¾″
6001651278¾″
150021616581″
4″DN1001502291908⅝″
3002552008⅞″
60027521681″
150030824181⅛″
6″DN1501502792418¾″
30032027012⅞″
600355292121″
1500410330121¼″
8″DN2001503432988¾″
300380330121″
600420356121⅛″
1500483387121⅜″
12″DN30015048343212⅞″
300521451161¼″
600559489201¼″
1500648514161⅞″
03 · Rating

Alloy 2507 Blind Flange Pressure Rating

Super Duplex 2507 flanges follow ASME B16.5, giving higher pressure ratings.

150#Class 150

Lightest section, broadest ex-stock availability across every 2507 flange type.

300#Class 300

Most-specified class for offshore process piping and desalination header runs.

600#Class 600

Common on subsea manifold and high-chloride injection line connections.

900#Class 900

Thicker hub section for higher-pressure sour-gas gathering manifolds.

1500#Class 1500

Specified for high-pressure wellhead tie-ins and christmas-tree flange sets.

2500#Class 2500

Heaviest section in the range, produced to mill order on confirmed size.

04 · Surface

SDSS Blind Flange Faces

Super Duplex 2507 Flanges face finish is matched to gasket type and service, confirmed at RFQ stage.

RF Smooth Finish
Concentric Serrated
Spiral Serrated
RTJ Groove Finish
Flat Face (FF)
Mirror / Lapped Finish
Shot-Blasted Mill Finish
Buffed / Polished
05 · Weight

2507 Duplex Socket Weld Flanges Weight Chart

UNS S32750 density matches carbon steel, so 2507 flanges weigh similarly; confirmed weights accompany drawings.

Standard Class Dia. of Bolt Circle Size of Bolt Bolt Hole Dia. Dia. Bolts No.
ISO 7005 (DIN) Flange PN10 Flanges 65 M12 14 95 4
PN40 Flanges 65 M12 14 95 4
PN6 Flanges 55 M10 11 80 4
PN20 Flanges 60.5 M14 16 90 4
PN25 Flanges 65 M12 14 95 4
PN16 Flanges 65 M12 14 95 4
AS 2129 Flange Table J Flanges 83 16 17 114 4
Table C Flanges 67 13 14 95 4
Table F Flanges 67 13 14 95 4
Table D Flanges 67 13 14 95 4
Table H Flanges 83 16 17 114 4
Table E Flanges 67 13 14 95 4
ANSI B16.5 Flanges ANSI 150 Flanges 60 13 16 89 4
ANSI 1500 Flanges 83 19 22 121 4
PN14 Flanges 67 M12 14 95 4
ANSI 600 Flanges 67 13 16 95 4
ANSI 900 Flanges 83 19 22 121 4
ANSI 300 Flanges 67 13 16 95 4


Density ≈ 7.80 g/cm³
Within ±2% Of Equivalent Carbon-Steel Weight
Weight Rises With Class, Not Just Size
Blind & RTJ Types Run Heaviest Per Size
Slip-On & Threaded Types Run Lightest Per Size
Net Weight Confirmed On Stamped Drawing
06 · Sealing

SAF 2507 Slip On Flange Gasket Chart

Gasket selection is matched to face type and class per ASME B16.20 / B16.21.

Size Gasket ID
 Gasket OD
900 LB 600 LB 400 LB 300 LB 150 LB
3/4 1.06 2.75 2.625 2.625 2.625 2.25
1 1.31 3.125 2.875 2.875 2.875 2.625
1 1/2 1.91 3.875 3.75 3.75 3.75 3.375
3 3.50 6.625 5.875 5.875 5.875 5.375
4 4.50 8.125 7.625 7.00 7.125 6.875
6 6.62 11.375 10.50 9.75 9.875 8.75
1 1/4 1.66 3.50 3.25 3.25 3.25 3
2 2.38 5.625 4.375 4.375 4.375 4.125
2 1/2 2.88 6.50 5.125 5.125 5.125 4.875
12 12.75 19.625 18.00 16.50 16.625 16.125
5 5.56 9.75 9.50 8.375 8.50 7.75
8 8.62 14.125 12.625 12.00 12.125 11
1/2 0.84 2.50 2.125 2.125 2.125 1.875
10 10.75 17.125 15.75 14.125 14.25 13.375


RF: Spiral-Wound, 316L Winding + PTFE/Graphite Filler
RTJ: Oval / Octagonal Ring Per ASME B16.20
FF: Full-Face Rubber Or PTFE Envelope
High-Chloride Duty: PTFE-Envelope Or Kammprofile
Sour Service: Graphite-Free Filler On Request
Class 900 & Above: Kammprofile Recommended

Super Duplex 2507 Flanges Exporter In India To Durban & Cape Town Ports

South African buyers receive Charpy-tested 2507 stock with a complete NACE test data pack.

Request Export Quote
07 · Bolting

Super Duplex SS Orifice Flange Torque Specs

Bolt torque depends on various factors, so we always provide specific stamped values with certified drawings.

Tighten In A Cross (Star) Pattern, Never Sequentially
3–4 Pass Sequence To Final Torque
Final Value Set Per ASME PCC-1 Guidance
Anti-Seize Lubricant Coefficient Confirmed Before Torqueing
B7/B8M Studs Matched To Duplex Bolt Circle
Stamped Torque Table Issued With Drawing

Offer Export-Grade Super Duplex 2507 Slip On and Weld Neck Flange Ready-Stock Inventory With Highest-PREN Chloride Resistance

08 · Product Range

Super Duplex Flanges Types

Super Duplex 2507 Flanges Manufacturer in India producing Threaded, Lap Joint, Puddle and Orifice types alongside the standard range.

A182 F53 UNS S32750 Weld Neck Flange

A182 F53 UNS S32750 Weld Neck Flange

ASME B16.5 • ½″–24″
  • Tapered hub, full penetration weld
  • Best for cyclic/high-pressure offshore lines
SAF 2507 Slip On Flange

SAF 2507 Slip-On Flange

ASME B16.5 • Class 150–600
  • Fast-fit, lower fabrication cost
  • Suited to low-pressure process service
Alloy 2507 Blind Flange

Alloy 2507 Blind Flange

ASME B16.5 • All Classes
  • Seals pipe ends & vessel nozzles
  • No bore machining required
2507 Duplex Socket Weld Flange

2507 Duplex Socket Weld Flange

ASME B16.5 • ≤4″ NB
  • Bore-fit socket, single fillet weld
  • Good for small high-pressure lines
Super Duplex Stainless Steel Threaded Flange

Super Duplex Stainless Steel Threaded Flange

ASME B16.5 • ≤4″ NB
  • Weld-free, bolted assembly
  • Preferred in hazardous-area work
25Cr Duplex Lap Joint Flange

25Cr Duplex Lap Joint Flange

ASME B16.5 • With Stub End
  • Free rotation for bolt alignment
  • Ideal for frequent dismantling
2507 SS Puddle Flange

2507 SS Puddle Flange

MSS SP-44 • Line Isolation
  • Figure-8 open/closed positive block
  • Standard for maintenance isolation
Super Duplex Stainless Steel Orifice Flange

Super Duplex Stainless Steel Orifice Flange

AGA-3 • Class 300–900
  • Jack-screw tapped for meter runs
  • Used for custody-transfer flow metering
09 · Composition

SDSS 2507 Plate Flanges Chemical Composition

High Cr, Mo and N content gives Super Duplex 2507 its balanced structure.

Chemical Composition - ASTM A182 Grade F53 / UNS S32750 (% by weight)
Cr24.0–26.0Chromium
Ni6.0–8.0Nickel
Mo3.0–5.0Molybdenum
N0.24–0.32Nitrogen
Mn1.20 maxManganese
Si0.80 maxSilicon
C0.030 maxCarbon
P0.035 maxPhosphorus
S0.020 maxSulfur
Cu0.50 maxCopper
10 · Strength Data

2507 Stainless Steel Reducing Flange Mechanical Properties

ASTM A182 defines minimum room-temperature properties for F53 Super Duplex 2507 forgings up to 50mm.

Tensile Strength800 MPa min (≤50mm)
Yield Strength (0.2%)550 MPa min (≤50mm)
Elongation15% min
Hardness310 HB max
11 · Cross-Reference

Super Duplex Stainless Steel Long Neck Flanges Material Equivalent

Super Duplex 2507 carries an equivalent designation across major piping standards, same chemistry.

USAASTM / ASME (USA)

  • UNS S32750 - ASTM A182 Gr F53 (Forgings)
  • ASTM A240 (Plate / Sheet / Strip)
  • ASTM A276 / A479 (Bar)
  • ASME SA182 (Flanges)

GermanyDIN / EN (Germany)

  • Werkstoff 1.4410
  • EN X2CrNiMoN25-7-4
  • EN 10222-5 (Forgings)

SwedenTrade Names

  • SAF® 2507 (Alleima / Sandvik)
  • Alloy 2507

UKTesting / Sour Service

  • NACE MR0175 / ISO 15156
  • ASTM A923 (Phase Structure)

WNR 1.4410 Weld Neck Flange Supplier In Dubai - NACE MR0175 Compliant

High-PREN 2507 stock ready for third-party witness testing and rapid GCC dispatch.

Get Supplier Quote
12 · Comparison

Duplex 2205 Vs Super Duplex 2507 Flange

Both are duplex grades. Grade 2507 has higher alloy content, offering greater strength and chloride resistance.

Super Duplex 2507 (S32750) - This Grade

  • Yield Strength: 550 MPa min
  • PREN: ≈40–42.5
  • Best For: Offshore, subsea, sour & high-chloride duty
  • Relative Cost: Higher

Duplex 2205 (S32205)

  • Yield Strength: ≈450 MPa min
  • PREN: ≈35
  • Best For: General process, moderate chloride duty
  • Relative Cost: Lower
13 · Corrosion Data

25Cr Duplex Lap Joint Flange PREN & Chloride Resistance

PREN (Pitting Resistance Equivalent Number = %Cr + 3.3x%Mo + 16x%N) is the buyer benchmark for chloride duty across UAE and Gulf offshore projects.

PREN ≈40–42.5 (Highest Of Standard Duplex Grades)
Resists Chloride Pitting In Seawater & Brine
Strong Crevice-Corrosion Resistance At Gasket Faces
Resists Chloride Stress-Corrosion Cracking
Suited To Offshore, Desalination & Produced-Water Lines
ASTM G48 Pitting/Crevice Test On Request
14 · Sour Service

2507 SS Puddle Flanges Sour & Geothermal Service

NACE-compliant 2507 flanges suit both H2S oilfield piping lines and geothermal steam headers across East Africa.

NACE MR0175 / ISO 15156 Compliant On Request
Suited To H2S-Bearing Sour Gas Gathering Lines
Used In Geothermal Steam & Brine Headers
Avoid Long-Term Hold Between 300–900°C (Sigma Phase)
Max Recommended Continuous Service 315°C
Hardness Capped At 310 HB For Sour Duty

Super Duplex 2507 Flanges Supplier In Nairobi For Geothermal Projects

Sour-rated 2507 stock with NACE compliance documentation for East African steam-field orders.

Get Supplier Quote
15 · Cold Service

Super Duplex Stainless Steel Threaded Flange Low-Temperature Toughness

Charpy V-notch testing at -46°C is standard for cold-climate pipeline projects.

Standard Impact TestCharpy V-Notch At -46°C
Typical Result RangeWell Above Common 27J Code Minimum
Microstructure BasisBalanced Ferrite-Austenite Retains Toughness
16 · Industries

UNS S32750 Flange Applications & Industries

These are the industries that specify Super Duplex 2507 flanges most often, and why.

Offshore & Subsea Platforms
Desalination & Seawater RO Plants
Oil & Gas Sour Service
Geothermal Steam & Brine Systems
Chemical & Petrochemical Processing
Mining & Acid-Mine Drainage Piping
Cold-Climate Pipeline Tie-Ins
Marine & Shipbuilding
Global Reach

Super Duplex 2507 Flanges Stocked & Dispatched Worldwide

Ex-stock Super Duplex 2507 inventory reaches buyers across these countries and beyond.

Export Markets
UAEUAE
TurkeyTurkey
CanadaCanada
UKUK
Saudi ArabiaSaudi Arabia
SingaporeSingapore
USAUSA
MexicoMexico
ThailandThailand
ItalyItaly
NetherlandsNetherlands
GermanyGermany
PhilippinesPhilippines
MalaysiaMalaysia
UgandaUganda
IndonesiaIndonesia
South AfricaSouth Africa
VietnamVietnam
VenezuelaVenezuela
Customs

Super Duplex 2507 Flanges HSN Code & Export Documents

Correct classification keeps your shipment moving smoothly through customs without delay.

HSN Code 73072300Chapter 73 - stainless steel tube, pipe and fitting classification for flanges.
Domestic GST 18%Applies to India invoicing; export orders are zero-rated.
Certificate Of OriginIssued per shipment for destination-country customs clearance.
Packing List & MTC PackBundled with invoice and B/L copy for import clearance.
Logistics

Super Duplex 2507 Flanges Delivery Estimate

Once your size, class and quantity are checked against ex-stock inventory, here is what to expect on lead time.

Ex-Stock Dispatch

  • Confirmed 2507 items leave our Mumbai facility in 3–5 working days

Sea Freight

  • Port-to-port transit runs roughly 15–35 days and varies by destination

Air Freight

  • 3–6 days when a shutdown or breakdown spare can't wait

Country-Specific ETA

  • Exact door-to-port schedule locked in once your RFQ is confirmed
FAQs

Super Duplex 2507 Flange FAQs

Quick answers to the questions buyers ask us most before placing an order.

Is the SAF 2507 Slip On Flange available ex-stock?

Yes, SAF 2507 Slip On Flange ships ex-stock, Class 150–600.

What classes does the Alloy 2507 Blind Flange cover?

Alloy 2507 Blind Flange is stocked across all classes, 150–2500.

What is the WNR 1.4410 Weld Neck Flange best suited for?

WNR 1.4410 Weld Neck Flange suits cyclic, high-pressure offshore piping lines.

Where are 2507 Duplex Socket Weld Flanges typically used?

2507 Duplex Socket Weld Flanges suit small-bore, high-pressure piping under 4 inch.

What service do 2507 SS Puddle Flanges provide?

2507 SS Puddle Flanges give positive line isolation during maintenance shutdowns.

Super Duplex 2507 Flanges - Built On Trust With Mortec
Highest PREN among standard duplex grades resists chloride pitting fully
Ex-stock 2507 RF and RTJ flanges through Class 1500 on hand
Every 2507 heat ships with Charpy-tested EN 10204 3.1 MTC
Bore, facing and thread customized to your export isometric drawing

Materials


Standard


Products


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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