ASTM B366 Inconel 625 Pipe Fittings Manufacturer & Supplier
Factory-Direct Processing & Fast Worldwide Dispatch | Complete MTC EN 10204 3.1 Traceability
Full-specification ASTM B366 / B564 pipe fittings manufactured to ASME B16.9, ASME B16.11, and NACE MR0175 sour service standards.
Original Mill Test Certificate
100% Heat-Matched EN 10204 Type 3.1
Premium Inconel 625 Pipe Fittings (UNS N06625 / DIN 2.4856)
High-Pressure Buttweld & Forged Alloy 625 Fittings | Fast Global Dispatch
Need exact-spec Inconel 625 pipe fittings for severe corrosive or high-temperature piping systems? We combine dedicated factory processing with global trading stock to supply seamless and welded elbows, tees, reducers, caps, and forged fittings under ASTM B366 / ASTM B564 / ASME B16.9 standards.
100% Material Traceability
Supplied with original heat-matched EN 10204 3.1 Mill Test Certificates to ensure complete material integrity and compliance.
Custom Processing
CNC beveling, cut-to-length service, surface conditioning, and 100% Positive Material Identification (PMI) testing on demand.
Flexible Order Quantities (MOQ)
Low order minimums designed for emergency maintenance repairs, trial batches, or full-scale engineering project orders.
What quick specs and supply capabilities do we offer for Alloy 625 fittings?
We combine dedicated factory processing with flexible global stock sourcing to provide quick-turnaround Inconel 625 (UNS N06625 / W.Nr. 2.4856) pipe fittings tailored to your project schedule:
| Supply Feature | Specifications & Processing Capabilities |
|---|---|
| Manufacturing Standards | ASTM B366 / ASME SB366 (Wrought/Buttweld), ASTM B564 / ASME SB564 (Forged) |
| Material Grades / Designations | Alloy 625, UNS N06625, W.Nr. 2.4856 (EN NiCr22Mo9Nb) |
| Dimensional Codes | ASME B16.9 (Buttweld), ASME B16.11 (Forged), MSS-SP-43 |
| Size & Schedule | Seamless: 1/2″ to 10″ NB | Welded: 1/2″ to 48″ NB (SCH 5S to SCH XXS) |
| Quality Testing | 100% PMI testing, MTC EN 10204 3.1, Liquid Penetrant Testing (LPT), Radiography (X-Ray / RT) |
| Processing Service | Custom CNC beveling, cut-to-length, surface polishing & acid cleaning |
| Delivery & Order | In-stock items ship in 3–5 days; Flexible MOQ for trial orders |
What types and sizes of Inconel 625 pipe fittings do we supply?
We offer a complete range of seamless, welded, and forged components built for both high-pressure systems and standard pipeline layouts:
Buttweld Pipe Fittings (ASME B16.9 / MSS-SP-43)
Elbows (45° & 90°)
Available in Long Radius (1.5D) and Short Radius (1D) designs. Engineered for smooth directional flow changes in high-pressure piping systems.
Tees (Equal & Reducing)
Equal tees for straight line splits and reducing tees for branch line transitions. Available in seamless and welded schedules.
Reducers
Concentric reducers for vertical pipe runs and eccentric reducers for horizontal pump inlets to prevent air cavitation and maintain flow velocity.
Caps & Stub Ends
Pipe caps for secure end seals and lap-joint stub ends for easy rotating flange alignment in corrosive chemical pipelines.
Forged & High-Pressure Fittings (ASME B16.11)
Built for High-Pressure & Instrument Lines
- Connection Types: Available in Threaded (NPT to ASME B1.20.1) and Socket Weld (SW to ASME B16.11) configurations.
- Pressure Ratings: Heavy-duty manufacturing for Class 2000, Class 3000, Class 6000, and Class 9000 (#) pressure classes.
- Available Components: Forged elbows, equal/reducing tees, couplings, half couplings, unions, bushings, plugs, and weldlets.
International Standards We Follow
Manufactured according to global quality standards for projects from USA to Europe and Asia.
| Category | Standard Code | Coverage & Application |
|---|---|---|
| Buttweld Material | ASTM B366 / ASME SB366 | Factory-made wrought nickel alloy fittings |
| Forged Material | ASTM B564 / ASME SB564 | Nickel alloy forgings for high-pressure socket-weld & threaded fittings |
| Material Designation | UNS N06625 / W.Nr. 2.4856 | Unified Numbering System and European Werkstoff chemical alloy code |
| Buttweld Dimensions | ASME B16.9 | Dimensions, tolerances, and beveling for wrought butt-welding fittings |
| Forged Dimensions | ASME B16.11 | Dimensional standards for forged socket-welding and threaded fittings |
| Sour Service | NACE MR0175 / ISO 15156 | Compliance for H₂S-containing sour oil and gas environments |
| Quality Certificate | EN 10204 3.1 | Official Mill Test Certificate proving heat chemical & mechanical test results |
Parameters Of Inconel 625
Complete technical specifications including chemical composition, mechanical properties, and physical properties.
Chemical Composition (%)
| Element | Min. (%) | Max. (%) |
|---|---|---|
| Nickel (Ni) | 58.0 | Balance |
| Chromium (Cr) | 20.0 | 23.0 |
| Molybdenum (Mo) | 8.0 | 10.0 |
| Niobium + Tantalum | 3.15 | 4.15 |
| Iron (Fe) | — | 5.0 |
| Carbon (C) | — | 0.10 |
| Manganese (Mn) | — | 0.50 |
| Silicon (Si) | — | 0.50 |
| Phosphorus (P) | — | 0.015 |
| Sulfur (S) | — | 0.015 |
Mechanical & Physical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 827 MPa (120,000 psi) |
| Yield Strength (0.2% Offset) | ≥ 414 MPa (60,000 psi) |
| Elongation | ≥ 30% |
| PREN (Pitting Resistance) | 45–52 (Typical) |
| Density | 8.44 g/cm³ |
| Melting Range | 1290–1350°C |
| Max Continuous Temp | Up to 982°C (1800°F) |
Key Difference: The high chromium (20–23%) and molybdenum (8–10%) content in Inconel 625 provides exceptional resistance to pitting and crevice corrosion, while niobium prevents intergranular cracking, distinguishing it from standard nickel alloys like Inconel 600.
Where are Inconel 625 fittings used in global industrial piping?
Because Alloy 625 withstands extreme pressures, stress cracking, and high-temperature oxidation, it is widely used in six key sectors:
Oil & Gas / Subsea
Sour Gas Lines & Wellhead Piping
Marine & Offshore
Seawater Cooling & Desalination Plants
Chemical Processing
Acid Reactors & Heat Exchanger Piping
Power Generation
Flue Gas Scrubber & Steam Systems
Aerospace & Defense
Jet Engine Exhaust Lines & Fuel Systems
Nuclear Facilities
Water Reactor Core & Liquid Line Piping
If your project operates under high temperatures, high pressure, or acidic conditions, choosing this alloy prevents costly system failures and unscheduled downtime.
Why Choose Our Factory For Inconel 625?
While 316L or duplex steel works for basic applications, severe industrial environments demand higher resistance.
Zero Post-Weld Heat Treatment
Resists strain-age cracking. Weld directly on site without expensive, time-consuming heat treatments. Use ERNiCrMo-3 filler wire for full joint strength.
Eliminates Chloride Stress Cracking
High nickel content (≥58%) prevents cracking caused by warm saltwater and marine salt spray — critical for offshore and desalination applications.
High Pitting Resistance (PREN 45–52)
High chromium (20–23%) and molybdenum (8–10%) content drives exceptional pitting resistance (PREN 45–52), while niobium (3.15–4.15%) stabilizes the alloy against intergranular corrosion and post-weld cracking.
Lower Long-Term Costs
Higher initial material cost is offset by reduced downtime, repair work, and replacement cycles over a 20-year operational life.
Rich Stock & Fast Delivery
Over 500 tons of combined high-performance alloy and stainless steel raw material stock across our supply network, ensuring immediate processing availability for Alloy 625 orders. Ready to ship within 3–5 days for standard sizes.
How Does GNEE Control The Quality Of Inconel 625?
Our rigorous 6-step quality control process ensures every product meets international standards.
Material Testing
Chemical composition verification using spectrometer analysis and PMI testing before processing.
Precision Forming
Controlled hot/cold forming tools maintain wall thickness integrity throughout the shaping process.
Solution Annealing
Heat treatment ensures correct micro-grain structure and maximum corrosion resistance.
CNC Machining
End connections precisely CNC machined to ASME B16.9 (weld bevels) and ASME B16.11 (socket weld & thread tolerances) for flawless field assembly.
NDT & Testing
100% PMI, LPT, and X-ray radiography (RT) on welded seams. Hydrostatic test capability guaranteed to match piping specifications.
MTC Documentation
Complete EN 10204 3.1 certification and traceability. Hard copy and digital MTC included with every shipment.
Frequently Asked Questions
What is the main difference between Inconel 625 and Inconel 600 fittings?
Can these fittings be welded directly on site?
What is your standard Minimum Order Quantity (MOQ)?
How long does delivery take to international destinations?
Custom Processed Orders: Production completed within 15 to 25 days depending on testing requirements and size specifications.
How do I verify the material quality after receiving the shipment?
Ready To Discuss Your Inconel 625 Project?
Direct factory supply with 100% MTC certification and custom manufacturing capabilities.
English 
Spanish 
Arabic 
Indonesian 
Turkish 
Russian 
Portuguese 
French 
Persian