Nickel-Copper Monel Flanges Built To Beat Seawater & Acid Corrosion
UNS N04400 & N05500 Verified Melts
Spectro report confirms nickel-copper ratio on every Monel Flanges heat.
ANSI B16.5 Class 150 – 2500 Range
Weld neck, slip-on, blind, RTJ and orifice faced to exact bore.
Proven Seawater & HF Acid Duty
K500 and 400 grade flanges rated for marine and chemical lines.
Heat-Wise Batch Traceability
Every flange lot links back to its own mill test certificate.
Ready Stock, Fast Dispatch
1/2″ to 24″ NB Monel Flanges packed for immediate export.
Monel Flanges Snapshot
- 1Flange Family: Weld Neck, Slip-On, Blind, Socket Weld, RTJ & Threaded
- 2Size Coverage: 1/2″ To 24″ NB, Class 150 – 2500
- 3Governing Standard: ANSI / ASME B16.5 & MSS SP-44
- 4Material Standard: ASTM B564 / ASME SB564
- 5Common Grades: Monel 400 (N04400) & Monel K500 (N05500)
- 6Service Use: Marine, Seawater, Sulphuric & Hydrofluoric Acid Lines
Or call our Mumbai office: +91 22 6743 7134 • Monel Flanges batches dispatched with heat-wise MTC 3.1
Monel Flanges combine nickel-copper strength with outstanding seawater corrosion resistance. We manufacture the ANSI B16.5 Monel Alloy Orifice Flange for precise flow metering. ASTM B564 governs forged Monel flanges in UNS N04400 and N05500 grades. Monel Weld neck, slip-on, blind and socket weld profiles suit varied piping needs. Each monel blind flange undergoes hydro-testing before leaving our Mumbai manufacturing facility. Chemical, marine and offshore piping systems rely on this copper-nickel alloy. We remain a dependable Monel Flanges Supplier in India for repeat export orders. Every batch ships with mill test certificates and heat traceability records.
Mumbai · Nickel-Copper Alloy Flange Exporter
Premium Monel Flanges for Demanding Industrial Applications
Ganpat Industrial forges, machines and certifies Monel Weld Neck, Slip-On, Blind, Socket Weld, RTJ, Orifice, Spectacle and Threaded Flanges for engineers who cannot risk a seal failing in seawater, brine, hydrofluoric acid or sour-gas service across India, the GCC and Southeast Asia. Every consignment leaving our facility carries heat-wise mill certification.
- ✓ISO 9001:2015
- ✓PED 2014/68/EU Compliant
- ✓ASTM B564 & ASME SB564 Certified
- ✓Mill Test Certificate 3.1
- ✓Third-Party Inspection Approved
Discover ANSI B16.5 Monel Alloy Orifice Flange Manufacturer in India With Precise Bore Dimensions
Monel Flanges Specification
ANSI B16.5 Monel Flange Material
- UNS N04400 & N05500
- W. Nr. 2.4360 / 2.4375
- Monel 400 / K500
- ASTM B564 Grade Certified
Monel Alloy Flanges Size Range
- NB: 1/2″ – 24″
- Class: 150 – 2500
- Type: RF, FF & RTJ Face
- Custom Sizes On Drawing
Monel Alloy RTJ Flange Testing
- PMI Testing
- Hydrostatic Pressure Test
- Ultrasonic & Radiography Test
- Third-Party Inspection
Monel Alloy Blind Flanges Finish
- Solution Annealed
- Pickled & Passivated
- Bright Machined
- Natural Mill Finish
Monel WNRF Flanges Documentation
- Mill Test Certificate 3.1
- NABL Lab Report
- Packing List
- Certificate Of Origin
Monel Industrial Flanges Origin
- Indian Origin
- European Origin
- US Origin
- Heat-Number Traceable
Monel Pipe Flanges Size & Class
We hold every common pressure class ready on the shelf for fast dispatch.
NB Range
1/2″ – 24″
Custom bore on drawing
Pressure Class
150 – 2500
ANSI / ASME B16.5
Face Type
RF / FF / RTJ
Raised, flat & ring joint face
Bore Schedule
Sch 10S – 160
Matched to mating pipe
Monel 400 Vs Monel K500 Flanges
Monel 400 Flanges (N04400)
- Excellent resistance to seawater & brine
- Good weldability, non-age-hardenable
- Preferred for chemical & marine piping
- Cost-effective for general corrosive duty
Monel K500 Flanges (N05500)
- Age-hardened with aluminium & titanium
- Nearly double the tensile strength of 400
- Preferred for pump shafts & high-load bolting
- Higher cost due to heat-treatment cycle
Monel WNRF Flanges Pressure-Temperature Rating
Allowable pressure drops as design temperature rises, per ASME B16.5 Group 3.9.
At 38°C
Class 150
~19.6 Bar rated working pressure
At 200°C
Class 150
~15.4 Bar rated working pressure
At 38°C
Class 300
~51.1 Bar rated working pressure
At 200°C
Class 300
~40.5 Bar rated working pressure
Need A Flange Rated For Your Exact Line Condition?Share design pressure & temperature – we confirm the correct class.
Buy ASTM B564 Monel Threaded Flanges in 400 & K500 Grades with Leak-Proof Sealing for Chemical, Marine & Offshore Piping
Key Features Of Monel Nippo Flanges
Outstanding Seawater & Brine Resistance
Non-Magnetic Alloy Composition
Retains Strength At Sub-Zero Temperature
Strong Resistance To Hydrofluoric Acid
Good Weldability With Common Filler Wire
K500 Grade Offers Age-Hardened Strength
Low Corrosion Rate In Alkaline Media
Stable Performance In Sour Gas Service
Most Common Types Of Monel Flanges
As a certified Monel Flanges manufacturer in India, we stock every profile listed below.
Monel Slip On Flanges
Class 150
Monel Spectacle Blind Flange
Figure 8
ANSI B16.5 Monel Alloy Orifice Flange
Flow Metering
Monel Alloy RTJ Flange
Ring Joint
Monel Alloy Weld Neck Flange
Butt Weld Hub
ASME SB564 Monel Alloy Lap Joint Flange
With Stub End
Monel Nippo Flanges
Nipple + Flange
ASTM B564 Monel Threaded Flanges
Screwed Bore
Surface Finish On Monel Alloy Forged Flanges
Solution Annealed Finish
Restores ductility after hot forging cycle
Pickled & Passivated
Acid dip strips scale, protects finished surface
Serrated RF Finish
Concentric grooves grip the flange gasket
Shot Blasted Finish
Even matte texture ahead of dimension check
Mirror Polished Finish
High-gloss face for hygienic duty lines
Monel Alloy Ring Type Joint Flange Dimension Chart
| NPS | Flange OD | Bolt Circle Dia | Flange Thickness |
|---|---|---|---|
| 1/2″ | 88.9mm | 60.3mm | 11.2mm |
| 2″ | 152.4mm | 120.7mm | 19.1mm |
| 6″ | 279.4mm | 241.3mm | 25.4mm |
| 12″ | 508mm | 451mm | 38.1mm |
| 24″ | 812.8mm | 746.1mm | 57.2mm |
Weekly Delivery Of Monel Flanges In Below Countries
We hold ready stock, ensuring on-time delivery of Monel Flanges to every destination port.
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
Peru |
South America | Salaverry | 45 Days |
Bahrain |
Asia | Mina Salman | 9 Days |
Colombia |
South America | Cartagena | 45 Days |
Chemical Composition Of Monel Ring Joint Flange
Reference chemistry for Monel Flanges stock as per ASTM B564 / ASME SB564.
| Grade | Ni | Cu | Fe | Mn | C | Si | S | Al + Ti |
|---|---|---|---|---|---|---|---|---|
| Monel 400 | 63.00 min | 28.00 – 34.00 | 2.50 max | 2.00 max | 0.30 max | 0.50 max | 0.024 max | – |
| Monel K500 | 63.00 – 70.00 | 27.00 – 33.00 | 2.00 max | 1.50 max | 0.25 max | 0.50 max | 0.010 max | 2.65 – 4.00 |
Mechanical Properties Of Monel Socket Weld Flanges
| Grade | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|
| Monel 400 (Annealed) | Psi – 70,000 , MPa – 485 | Psi – 28,000 , MPa – 195 | 35 % |
| Monel K500 (Age Hardened) | Psi – 1,30,000 , MPa – 895 | Psi – 90,000 , MPa – 620 | 20 % |
Monel Spacer Flange Equivalent Material
ASTM / UNS
- ASTM B564 / ASME SB564 Flange Stock
- UNS N04400 (Monel 400), N05500 (K500)
- ASME B16.5 Monel Flange Dimensions
DIN / Werkstoff Nr.
- Werkstoff nr. 2.4360 (Monel 400)
- Werkstoff nr. 2.4375 (Monel K500)
- DIN 17743 / EN 10222-5 Reference
MSS / Trade Name
- MSS SP-44 Monel Flange Reference
- Monel (Special Metals Registered Trade Name)
- Often Searched As Nickel-Copper Alloy Flange
Testing Methods For Monel Alloy RTJ Flange
Every Monel Flanges Supplier in India batch passes the checks listed below before dispatch.
Chemical Analysis – Spectro Test
Spectrometer confirms Ni-Cu ratio against grade chemistry
Every Heat
Tensile & Yield Test
Confirms strength meets ASTM B564 minimums
Every Batch
Hydrostatic Test
Confirms flange body integrity at 1.5x design pressure
Every Batch
Ultrasonic Test (UT)
Detects internal forging defects before machining
On Request
Positive Material Identification (PMI)
Handheld alloy analyzer confirms grade before packing
Every Batch
Monthly Delivery Of Monel Flanges In Below Countries
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
Kuwait |
Asia | Shuwaikh | 10 Days |
Nigeria |
Africa | Harcourt | 30 Days |
Argentina |
South America | Mar del Plata | 45 Days |
Need A Third-Party Witnessed Test Certificate?We coordinate SGS, Bureau Veritas or TUV inspection on request.
Monel Industrial Flanges Weight Chart
2″ Class 150 WNRF
~2.1 Kg
Forged, machined finish
6″ Class 150 WNRF
~9.8 Kg
Forged, machined finish
12″ Class 150 WNRF
~31.5 Kg
Forged, machined finish
24″ Class 150 WNRF
~118 Kg
Forged, machined finish
Welding Methods For Monel Alloy Nippolet Flange
TIG (GTAW) Root Pass
ERNiCu-7 filler wire for a clean root
MIG (GMAW) Fill Pass
Faster deposition for thicker hub sections
SMAW Cap Pass
ENiCu-7 electrode for the finishing weld cap
Orbital Welding
Repeatable welds for critical bore alignment
Post-Weld Stress Relief
Reduces distortion around the flange hub
Need A Grade-Matched Chemistry Report?Share application media & temperature – we confirm the right alloy.
Application Industries Of Monel Spectacle Blind Flange
Choose a trusted flange source, like us, for these demanding process industries.
Marine & Offshore Piping Systems
Chemical & Fertilizer Processing Plants
Oil & Gas Sour Service Piping
Desalination & Seawater Treatment Plants
Pulp & Paper Industry Piping
Sulphuric & Hydrofluoric Acid Handling
Pump & Valve Body Flange Sets
Power Plant Cooling Water Lines
Manufacturing Process Of Monel Alloy Flanges
Raw Billet & Heat Selection
Certified nickel-copper billet chosen against grade chemistry
Hot Forging
Press forging to ANSI B16.5 flange profile
Bore & Face Machining
Precise bore, bolt-hole and face finishing per drawing
Solution Annealing
Controlled furnace cycle restores grain structure
Inspection, Marking & Packing
PMI, dimensional check and heat-number stamping before dispatch
Buying Tips For Monel Spade Flange Orders
Confirm Grade First
Choose 400 or K500 by media & load
Match Class To Line Rating
Never under-rate the pressure class
Ask For PMI Report
Verify alloy before the flange is dispatched
Confirm Face Type
RF, FF or RTJ must match mating flange
Check Bolt Circle Fit
Confirm hole count & diameter compatibility
Need A Flange For A New Alloy Project?Send your process fluid details – we recommend the right grade.
How To Identify Genuine ASTM B564 Threaded Flanges
Ask For Heat-Wise Mill Test Certificate
Request PMI Report Before Dispatch
Check Grade Marking On Flange Body
Match Dimensions To ANSI B16.5 Chart
Monel Flanges Bolt Circle & Drilling Chart
| NPS | No. Of Holes | Bolt Hole Dia | Bolt Size |
|---|---|---|---|
| 1/2″ | 4 | 15.7mm | 1/2″ |
| 2″ | 4 | 19.1mm | 5/8″ |
| 6″ | 8 | 22.4mm | 3/4″ |
| 12″ | 12 | 25.4mm | 7/8″ |
MOQ, Lead Time & Custom Size Monel Flanges
Frequently Asked Questions
What is the Monel Slip On Flanges price?
Price depends on grade, size, class and quantity; share your drawing for an exact quote.
What is the Monel Alloy Flanges size range you supply?
We supply Monel Flanges from 1/2″ up to 24″ NB across all pressure classes.
Which HSN code applies to Monel Flanges in India?
Monel Flanges fall under HSN code 7307, taxed at 18% GST on domestic invoices.
Is there a minimum order quantity for Monel Alloy Blind Flanges?
No fixed MOQ; we supply single pieces and full project quantities on request.
What is the difference between Monel 400 and Monel K500 Flanges?
K500 is age-hardened for higher strength; 400 offers better weldability and lower cost.
Explore Nearby Locations for the Quickest Delivery Options
| Texas (USA) | California (USA) |
| Al Jubail (Saudi Arabia) | Dubai (UAE) |
| Dammam (Saudi Arabia) | Abu Dhabi (UAE) |
| Riyadh (Saudi Arabia) | Houston (USA) |
| Al Khobar (Saudi Arabia) | Indiana (USA) |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA