• An ISO 9001:2015 Certified Company
Manifest Alloys

  • Call

    +91 9930108105

  • Email

    info@manifestalloys.com

  • Address

    Sanghvi Galaxy, Shop No.2, Khetwadi
    10th Lane, Mumbai-400004, India

Incoloy Flanges

Why Manifest Alloys Leads in Incoloy Flanges Manufacturing?

01

Genuine Incoloy Alloy Mill Source

  • Traceable UNS N08825 / N08800 heats
02

Full Grade Range In-Stock

  • Incoloy 825, 800, 800H & 800HT
03

NACE MR0175 Compliant

  • Sour-service grade validation
04

In-House CNC Flange Machining

  • Precise raised-face & bore finish
05

Worldwide Export Documentation

  • EN 10204 3.1/3.2 certificates
Incoloy flanges  

Incoloy Flanges Key Features

  • Size Range1/2 Inch to 24 Inch NB
  • Pressure Class150 - 2500 & PN6 - PN40
  • Facing TypeRF, FF, RTJ
  • Grade RangeIncoloy 825, 800, 800H, 800HT
  • Ex-Stock Delivery7-10 Days
  • Custom Order Lead Time20-25 Days
  • Country of OriginIndia
  • BrandISO 9001:2015 Certified
  • MTC CertificateEN 10204 3.1 & 3.2
  • Minimum OrderAs Per Requirement
  • Tensile Strength550-600 MPa
  • Max Service Temp.Up to 550°C
  • Countries Served25+
  • Applicable StandardsASTM B564, ASME B16.5, DIN, ISO
  • HSN Code7307
Table of Content
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ISO Certified ASTM B564 UNS N08825 Blind Flange Supplier in India

As a manufacturer, supplier and stockist of Incoloy Flanges, we serve petrochemical, natural gas and nuclear power projects that need parts capable of handling high-temperature steam lines and long-term corrosion protection. Our client base spans Qatar, Turkey, Germany, Australia and Singapore, supported by bulk inventory that keeps global order fulfilment fast. Incoloy 800 grades bring strong oxidation and corrosion resistance, while Incoloy 800H adds controlled carbon content for extra strength at elevated temperatures — both are NACE MR0103 certified for sour-service environments. Every batch ships with heat treatment charts documenting the grain-structure cycle and Material Test Certificates confirming mechanical and chemical properties, so buyers can verify quality before the material leaves our facility.

Incoloy Flanges Specification

Incoloy Blind Flanges Size Range

  • 1/2" (15 NB) to 24" (600 NB)
  • Custom oversize on request
  • Metric & imperial both offered

Nickel Alloy 825 Pipe Flanges Temperature Range

  • Cryogenic up to 550°C
  • Stable in reducing & oxidizing media

Incoloy 800 Flanges Hardness Range

  • ≤192 HB
  • Equivalent: ≤90 HRB
  • Tested as per ASTM B564

Incoloy Slip On Flanges Bore Tolerance

  • +0.4 / -0.0 mm on ID
  • Face flatness within 0.05mm

Alloy 825 Flanges Tensile Strength

  • 550-600 N/mm²
  • Min. yield strength: 240N/mm²
  • Elongation: ≥30%

Inconel 800 Pipe Flanges Melting Range

  • 1357-1385°C
  • Retains strength at elevated heat

ASTM B564 UNS N08825 Testing Methods

  • Positive Material Identification (PMI)
  • Hydrostatic & radiography test
  • Intergranular corrosion (IGC) test
  • Ultrasonic examination

Incoloy Alloy Weld Neck Flanges Bore Type

  • Standard Bore (STD)
  • Extra Strong (XS)
  • Schedule matched to pipe

DIN 2.4858 Flange Face Type

  • Raised Face (RF)
  • Flat Face (FF)
  • Ring Type Joint (RTJ)

Incoloy Flanges Standards

  • ASME B16.5
  • ASME B16.47 Series A & B
  • ASME B16.36
  • MSS SP-44
  • BS 4504 / DIN / EN 1092

SB 564 UNS N08800 Flanges Material Form

  • Forged (most common)
  • Plate flanges on request
  • Bar stock machined discs

Alloy 800 Forged Flanges Surface Treatment

  • Pickled & passivated
  • Machined bright finish
  • Black / heat-treated finish

Incoloy Blind Flanges Production Techniques

  • Open-die forging
  • Solution annealed & machined
  • Tolerance per ASME B16.5

Inconel 800 Slip On Flanges Hub Length

  • Per ASME B16.5 hub schedule
  • Matched to bore & class

Incoloy 800HT Flanges End Prep

  • Bevelled end for butt weld
  • Matches Schedule 10 to 160

Incoloy 800H Socket Weld Flanges Applications

  • High temperature process piping
  • Ethylene & heat treatment equipment
  • Petrochemical furnace tubing

DIN 1.4876 Blind Flanges Pressure Rating

  • Class 150 to Class 2500
  • PN 6 to PN 100 (DIN/EN)
  • Rating per ASME B16.5 charts

Incoloy 800HT Flanges Grain Structure

  • Controlled coarse grain
  • Enhanced creep-rupture strength

Inconel 800 Slip On Flanges Manufacturing Route

  • Forging
  • Solution Annealing
  • Rough & Finish Machining
  • Drilling
  • Inspection
  • Marking & Packing

DIN 2.4858 Blind Flange Packaging & Storage

  • Wooden crates & pallets
  • Face protectors & VCI wrap
  • Custom export labeling

Incoloy Flanges Chemical Composition

  • Ni: 38-46%, Cr: 19.5-23.5%
  • Fe: min. 22%, Mo: 2.5-3.5%
  • Cu: 1.5-3.0%, Ti/Al additions

Leading Incoloy Flanges Manufacturer in India

From billet selection through forging, machining and final inspection, Incoloy 825 and 800 flanges are produced entirely in-house, so every piece carries full raw-material-to-dispatch traceability.

Request a Quote

Manufacturer of Incoloy 800 Slip On Flanges in Custom Sizes as Per ASME B16.5 Standard

Incoloy 800HT Flanges Dimension

Buy From Incoloy Flanges Manufacturer in India Offering Many Sizes as Per Project Requirements

Nominal Daimeter (MM)
INCH DN INCH DN
1/2 15 12 300
3/4 20 36 900
1 25 14 350
1 1/4 32 15 375
1 1/2 40 16 400
2 50 18 450
2 1/2 65 20 500
3 80 24 600
4 100 28 700
5 125 30 750
8 200 32 800

Alloy 825 Blind Flanges Thread Types

01 · TAPER

NPT - National Pipe Taper

  • Self-sealing tapered thread
  • Manufactured to ASME B1.20.1
  • Common on screwed flanges up to 4"
02 · TAPER

BSPT - British Standard Pipe Taper

  • Tapered thread per BS 21 / ISO 7-1
  • Seals metal-to-metal, no gasket needed
03 · PARALLEL

BSPP - British Standard Pipe Parallel

  • Straight thread per ISO 228
  • Requires bonded seal washer / O-ring
04 · BOLTING

UNC - Unified Coarse Thread

  • Used on stud bolts & tapped bolt holes
  • Manufactured to ASME B1.1
05 · METRIC

Metric ISO Thread (M-Series)

  • Coarse & fine pitch options
  • Manufactured to ISO 261 / DIN 13
06 · CUSTOM

Special & Custom Threads

  • Application-specific pitch & profile
  • Manufactured to client drawing

Stockist of Nickel Alloy 825 Socket Weld Flanges with Various Face Types and Factory Price in Mumbai

ASTM B564 UNS N08825 Socket Weld Flange Face Types

RF - Raised Face

  • Height 1.6mm on Class 150-300, 6.4mm on Class 400+

FF - Flat Face

  • Face flush with the bolt circle, no raised portion

RTJ - Ring Type Joint

  • Machined groove for a metal ring gasket

T&G - Tongue & Groove

  • Interlocking tongue & groove profile

M&F - Male & Female

  • Stepped male projection seats into a female recess

LJ - Lap Joint Face

  • Paired with a loose backing ring over a stub end

Incoloy Alloy Weld Neck Flanges HSN Code

HSN Code 7307

Incoloy Flanges HSN Code

  • Applies to Incoloy 825 & 800 flanges
  • Used for GST invoicing
  • Required for customs clearance on import/export
GST Invoicing Customs Clearance
Price per kg
₹ —— / kg
Price on request

Incoloy Slip On Flanges Price

Pricing varies with grade, size, pressure class, facing type and current nickel-alloy raw material rates — our team can quote the exact rate for your requirement.

Contact for Best Price
Exporter of Incoloy Alloy Weld Neck Flanges with 150, 300, 600, 900 and 2500 LBS Pressure Class

Types of Incoloy Flanges

View Incoloy Flanges Stockist in India Provides a Wide Range of Regularly Used Flanges Types.

Incoloy 825 weld neck flange
825 Incoloy Weld Neck Flanges
  • Tapered hub for butt weld joint
  • Best for high pressure lines
  • Even stress distribution
Incoloy 825 blind flange
Alloy 825 Blind Flanges
  • Solid disc, no bore
  • Seals pipe or vessel end
  • Used for pressure testing
Incoloy 825 slip on flange
Incoloy 825 Slip On Flanges
  • Slides over pipe end
  • Fillet welded top & bottom
  • Lower installed cost
UNS N08825 socket weld flange
ASTM B564 UNS N08825 Socket Weld Flange
  • Recessed socket bore
  • Used on small bore piping
  • Smooth internal bore flow
Incoloy 800 Threaded Flanges
Incoloy 800 Threaded Flanges
  • Suits high temperature ducting
  • Furnace & heat treatment lines
  • Cost-effective installation
Nickel alloy 800 socket weld flange
Nickel Alloy 800 Socket Weld Flanges
  • Class 150 to 2500 rating
  • Instrumentation & small bore use
DIN 2.4858 Orifice Flanges
DIN 2.4858 Orifice Flanges
  • PN rated European standard
  • Used for line-end closure
Incoloy 800H lap joint flange
Incoloy 800H Lap Joint Flange
  • Used with stub-end fitting
  • Easy bolt-hole alignment
  • Cost saving on alloy usage
Inconel 800 ring type joint flange
Inconel 800 Ring Type Joint Flange
  • Metal-to-metal RTJ seal
  • High pressure, critical service

Nickel Alloy 825 Pipe Flanges Pressure Rating Chart

Manifest Alloys is Incoloy Flanges Supplier in India Provide Class 150 to Class 2500 Rating Chart

Temperature in (°F) Class 2500 Class 1500 Class 900 Class 600 Class 400 Class 300 Class 150
1500 230 135 80 55 35 25 10
1450 285 170 105 70 45 35 15
1400 400 240 145 95 65 50 20
1350 515 310 185 125 80 60 20
1300 715 430 255 170 115 85 20
1250 945 565 340 225 150 115 20
1200 1285 770 465 310 205 155 20
1150 1655 995 595 400 265 200 20
1100 2145 1285 770 515 345 255 20
1050 2570 1545 925 615 410 310 20
1000 2675 1605 965 640 430 320 20
950 3180 1910 1145 765 510 380 35
900 3240 1945 1165 780 520 390 50
850 3300 1980 1190 790 530 395 65
800 3360 2015 1210 805 540 405 80
750 3460 2075 1245 830 555 415 95
700 3540 2125 1275 850 565 425 110
650 3580 2150 1290 860 575 430 125
600 3640 2185 1310 875 580 435 140
500 3880 2330 1395 930 620 465 170
400 4140 2485 1490 995 660 495 190
300 4500 2700 1620 1080 720 540 205
200 5000 3000 1800 1200 800 600 230
-20 - 100 6000 3600 2160 1440 960 720 275

Applications of Incoloy 800 Slip On Flanges

Chemical & Petrochemical Processing
→
Seawater Desalination Plants
→
Oil & Gas Sour Service Lines
→
Nuclear & Power Generation
→
Pickling & Acid Handling Equipment
→
Marine & Offshore Piping
→
Pulp, Paper & Pharma Equipment
→
Furnace & Heat Treatment Ducting
→
Fertilizer & Mining Equipment
→

ISO Certified Reliable Incoloy Flanges Supplier Worldwide

Distributors, EPC contractors and OEMs across India, the Middle East, Europe and Southeast Asia rely on our ISO 9001:2015-certified quality system for repeat orders.

Request a Quote
Check DIN 1.4876 Blind Flanges in Smooth, Spiral and Serrated Finishes and Properties Before Purchasing the Material

Difference Between Incoloy 825 vs Incoloy 800 Flanges

Incoloy 825 UNS N08825
Molybdenum 2.5-3.5% added
Tensile Strength 550 N/mm²
Acid / Chloride Resistance Excellent
Best Service Sulfuric & phosphoric acid
Relative Cost Higher
Best for chemical & acid process duty
Incoloy 800 UNS N08800
Molybdenum Not present
Tensile Strength 450-600 N/mm²
Acid / Chloride Resistance Moderate
Best Service High temp. oxidation duty
Relative Cost Lower
Best for furnace & heat treatment duty

Incoloy Flanges Chemical Composition

Check Incoloy Flanges Stockist in India, Provides Accurate Chemical Properties

Incoloy 800 Flange (UNS N08800)
30.0-35.0%
Ni
19.0-23.0%
Cr
1.50%
Mn
1.00%
Si
0.75%
Cu
0.15-0.60%
Al
0.10%
C
Major alloying elementMinor element
Incoloy 800H Flange (UNS N08810)
30.0-35.0%
Ni
19.0-23.0%
Cr
1.50%
Mn
1.00%
Si
0.75%
Cu
0.15-0.60%
Al
0.05-0.10%
C
Major alloying elementMinor element

Incoloy 800HT Flange (UNS N08811)
30.0-35.0%
Ni
19.0-23.0%
Cr
1.50%
Mn
1.00%
Si
0.75%
Cu
0.15-0.60%
Al
0.10%
C
Major alloying elementMinor element
Incoloy 825 Flange (UNS N08825)
38.0-46.0%
Ni
19.5-23.5%
Cr
2.50-3.50%
Mo
1.50-3.00%
Cu
1.00%
Mn
0.50%
Si
0.05%
C
Major alloying elementMinor element

Nickel Alloy 800 Socket Weld Flanges Test Certificates

PED Approved Incoloy Flanges Supplier in India, Provide MTC EN 10204 3.1 and 3.2 On Request

Quality Assurance
Mill Test Certificate

Batch traceability & material composition report

EN 10204 · 3.1 / 3.2
System Certified
ISO 9001:2015

Certified quality management system

ISO · 9001:2015
Compliance
NACE MR0175

Sour service material compliance

NACE · MR0175
Standards Met
ASTM / ASME Compliant

Manufactured to global flange standards

ASTM B564 · ASME B16.5

Thermal Conductivity of Nickel Alloy 825 Socket Weld Flanges

  • 76.8 Btμ-Ft/Hr-Ft² - °F (78°F)
  • 11.1 W/M-K (26°C)

Incoloy Blind Flanges Mechanical Properties

Incoloy 800 Flanges & Incoloy 800H Flanges
450
N/mm²
Tensile Strength
172
N/mm²
Yield Strength
30
% min
Elongation
90
HRB max
Hardness
196
GPa
Modulus of Elasticity
260
N/mm²
Fatigue Strength
450
N/mm²
Tensile Strength
172
N/mm²
Yield Strength
30
% min
Elongation
90
HRB max
Hardness
196
GPa
Modulus of Elasticity
275
N/mm²
Fatigue Strength
Incoloy 800HT Flanges & Incoloy 825 Flanges
450
N/mm²
Tensile Strength
172
N/mm²
Yield Strength
30
% min
Elongation
90
HRB max
Hardness
196
GPa
Modulus of Elasticity
290
N/mm²
Fatigue Strength
585
N/mm²
Tensile Strength
240
N/mm²
Yield Strength
30
% min
Elongation
90
HRB max
Hardness
196
GPa
Modulus of Elasticity
310
N/mm²
Fatigue Strength

ASTM B564 UNS N08825 Weld Neck Flanges Surface Finishes

ISO Approved Incoloy Flanges Supplier in India Offers Various Surface Finishes For Long Life

Machined / As-Forged

  • Standard mill finish
  • Ready for weld or bolt-up

Pickled & Passivated

  • Removes scale & free iron
  • Boosts corrosion resistance

Bright Polished

  • Mechanically polished face
  • Improves visual inspection

Serrated / Smooth RF

  • Improves gasket seating
  • Meets ASME B16.5 finish

Satin / Brushed

  • Uniform directional grain
  • Used for cosmetic sections

Black Oxide / Heat Tint

  • Used for identification
  • Low-reflective surface

Incoloy Flanges Equivalent Grades

Trade Name
Incoloy / Alloy
  • 800 - also Inconel 800
  • 800H - also Inconel 800H
  • 800HT - also Inconel 800HT
  • 825 - also Inconel 825
Germany
Germany
DIN / Werkstoff
  • Grade 800 - 1.4876
  • Grade 800H - 1.4958
  • Grade 800HT - 1.4959
  • Grade 825 - 2.4858
United States
United States
ASTM / UNS
  • Grade 800 - UNS N08800
  • Grade 800H - UNS N08810
  • Grade 800HT - UNS N08811
  • Grade 825 - UNS N08825
United Kingdom
United Kingdom
BS / EN
  • 800 - X10NiCrAlTi32-21
  • 800H - X10NiCrAlTi32-21
  • 800HT - X8NiCrAlTi32-21
  • 825 - NiCr21Mo
Japan
Japan
JIS
  • Grade 800 - NCF800
  • Grade 800H - NCF800H
  • Grade 800HT - NCF800HT
  • Grade 825 - NCF825
European Union
Family Cross-Reference
800 Series vs 825
  • 800 / 800H / 800HT share the same Fe-Ni-Cr base
  • 825 adds Mo + Cu for higher acid resistance

Heat Treatment of 825 Incoloy Weld Neck Flanges

  • Stabilise Annealed = 940°C
  • Annealing = 955°C

Incoloy 800 Slip On Flanges Manufacturing Process

View Incoloy Flanges Manufacturer in India Provides Custom Solution For Chemical Industry

Billet Selection

Certified UNS N08825/N08800 billet

Open-Die Forging

Hot forged to near-net flange shape

Solution Annealing

Heat treated for corrosion resistance

CNC Machining & Drilling

Face, bore & bolt holes finished

Inspection & Testing

PMI, dimensional & hydro test

Common Buyer Queries for Incoloy Flanges

01

Is there a Minimum Order Quantity (MOQ)?

  • MOQ: 5 pcs
  • Discount above 50 pcs
02

Can flanges be supplied to a custom drawing?

  • Non-standard bore on GAD
  • Per ASME B16.5 / B16.47
03

What payment terms are offered to overseas buyers?

  • 30% advance, 70% on BL
  • LC at sight
04

Are free samples available before a bulk order?

  • Dispatch in 3-5 days
  • Cost adjusted in PO
05

Which countries do you regularly export to?

  • US, EU, GCC, SEA
  • HS Code 7326.19
06

How is order quality verified before dispatch?

  • TPI: SGS/BV/TUV
  • 100% dimensional + PMI
07

What is the difference between Incoloy 800, 800H & 800HT?

  • 800H: controlled grain & carbon
  • 800HT: added Al+Ti for creep
08

Which flange type suits high-temperature furnace service?

  • Incoloy 800HT WNRF above 800°C
  • Best creep & rupture strength
09

Why choose Incoloy 825 over 800 for acid service?

  • 825 has Mo + Cu for acid resistance
  • Better vs sulfuric & phosphoric acid
10

What test certificates come with the shipment?

  • EN 10204 3.1 MTC
  • PMI, RT/UT reports
11

Which sizes & pressure classes are stocked?

  • 1/2" to 24" NB, Class 150-2500
  • WNRF, SORF, BLRF, Lap Joint
12

What is the typical lead time for bulk orders?

  • 4-6 weeks ex-works
  • Expedited on stock confirmation

NACE Approved Incoloy 825 Flanges Stockist in India

Class 150 to Class 2500, in sizes 1/2" to 24" NB, are held in ready stock for sour, acidic and high-temperature service — ex-stock dispatch in 7-10 days.

Request a Quote

Countries We Export Incoloy Flanges To

Region
North & South America
USAUSA CanadaCanada MexicoMexico BrazilBrazil
Region
Europe
UKUK SpainSpain PolandPoland NetherlandsNetherlands GermanyGermany ItalyItaly IrelandIreland DenmarkDenmark
Region
Middle East
UAEUAE Abu DhabiAbu Dhabi Saudi ArabiaSaudi Arabia Al JubailAl Jubail Al KhobarAl Khobar DammamDammam RiyadhRiyadh QatarQatar DohaDoha TurkeyTurkey
Region
Africa
South AfricaSouth Africa NigeriaNigeria SenegalSenegal SeychellesSeychelles
Region
Asia Pacific
IndiaIndia SingaporeSingapore AustraliaAustralia

Inconel 800 Pipe Flanges Packing & Marking

Export Pack Wooden Crates

Incoloy Flanges Packing & Marking Details

  • Heat number, grade & size stamped on face
  • Face protectors & VCI wrap applied
  • Fumigated wooden crates for sea freight
  • Bar-coded labeling on request
Export Ready Traceable Marking

Incoloy Flanges Client References

Chemical Processing
Rheinland Chemical Works
  • Sulfuric acid handling upgrade
  • Incoloy 825 Weld Neck Flanges
Germany
Desalination Plant
Jubail Desalination Authority
  • Seawater intake piping project
  • Incoloy 825 Blind Flanges
Saudi Arabia
Oil & Gas
Doha Offshore Engineering LLC
  • Sour gas gathering line project
  • UNS N08825 Socket Weld Flanges
Qatar
Heat Treatment
Great Lakes Furnace Systems
  • Furnace exhaust ducting upgrade
  • Incoloy 800H Slip On Flanges
USA
Pulp & Paper
Rotterdam Paper Processing BV
  • Bleach plant piping revamp
  • Incoloy 825 Lap Joint Flanges
Netherlands
Marine Fabrication
Marina Bay Offshore Pte Ltd
  • Topside piping fabrication
  • DIN 2.4858 Weld Neck Flanges
Singapore

Trusted Incoloy Flanges Exporter to the Middle East & Beyond

Every export shipment leaves with EN 10204 3.1/3.2 mill certificates, PMI reports and fumigated wooden-crate packing built for sea freight without delay.

Request a Quote

Incoloy Flanges FAQs

01What is Incoloy 825 used for in flanges?
  • Sulfuric & phosphoric acid lines
  • Chemical & desalination plants
02Is Incoloy 800 flange the same as 825?
  • No, 800 lacks Mo & Cu
  • 825 gives higher acid resistance
03What standard governs dimensions?
  • Material: ASTM B564 / UNS spec
  • Dimensions: ASME B16.5 / B16.47
04Do Incoloy Flanges resist corrosion well?
  • Ni-Cr base, high oxidation resistance
  • Fit for acidic & saline media
05What sizes does Manifest Alloys supply?
  • 1/2" to 24" NB
  • Class 150 to Class 2500
06800 vs 800H vs 800HT key difference?
  • 800H: controlled C 0.05-0.10%
  • 800HT: added Al+Ti, higher creep
07Max service temperature for these flanges?
  • 800/800H: up to 980°C
  • 800HT: rated up to 1100°C
08What UNS & DIN numbers apply?
  • 800/H/HT: N08800/N08810/N08811
  • 825: UNS N08825, DIN 2.4858
09Which facings are available?
  • RF, FF, RTJ facing
  • WNRF, SORF, BLRF, LJ types
10What documentation ships with the order?
  • EN 10204 3.1 MTC
  • PMI & RT/UT reports