Inconel 625 pipe fittings are specified for nickel alloy piping systems where the fitting route must match corrosion resistance, weldability, traceability, and the project piping class.
Inconel 625 / Pipe Fittings / UNS N06625
Inconel 625 Pipe Fittings Manufacturer & Exporter
Raymond Tube Industries manufactures, supplies, and exports Inconel 625 / UNS N06625 pipe fittings to ASTM B366 / ASME SB366 for corrosion-critical nickel alloy process piping. The supply scope includes elbows, tees, reducers, caps, stub ends, and forged fitting requirements reviewed against the applicable dimensional standard, schedule or bore, testing, documentation, packing, quantity, and destination.
Material description
Inconel 625 material and product scope.
Start with material identity, then define the flange or fitting form, dimensions, inspection, documentation, and packing requirements for quotation.
RTI separates wrought butt-weld fitting requirements from forged socket-weld or threaded fitting requirements so the RFQ can capture class, NDE, construction route, marking, and document expectations.
Chemistry and mechanical tables come from the same controlled UNS N06625 material data used by the Phase 3 benchmark page.
| Specification | Verified value | Unit |
|---|---|---|
| ASTM standard | ASTM B366 for factory-made wrought nickel alloy fittings | - |
| ASME material standard | ASME SB366 | - |
| UNS | N06625 | - |
| Sizes | ASME B16.9 reference scope: NPS 1/2 through NPS 48 for factory-made wrought buttwelding fittings | - |
| Pressure class | Buttweld fittings are specified by wall schedule or bore; forged fitting class requires B16.11 / drawing confirmation | - |
| Schedule / bore | Buyer to specify schedule, wall thickness, matching pipe, or bore requirement | - |
| Facing / ends | Buttweld bevel, socket-weld, threaded, or lap-joint assembly details as applicable | - |
| Dimensional standards | ASME B16.9 for buttweld fittings; ASME B16.11 for socket-weld/threaded forged fitting review | - |
Sizes and configuration
Open the dimensional table that matches the buying decision.
The full reference tables remain available for engineering review. Start with the size family and dimensional standard that apply to the RFQ.
Product forms
Pipe fitting forms for controlled project supply.
Every form is a quotation signal: it controls standard selection, dimensional review, inspection, packing, and the drawing or piping-class details needed before offer.
90 deg elbow
Long-radius or project-defined direction changes for process piping packages.
45 deg elbow
Angled direction changes where layout, pressure drop, and weld access need coordination.
Tee
Equal tee fittings for branch connections in butt-welded piping systems.
Reducing tee
Branch connections with unequal run or outlet sizes, specified by full size sequence.
Concentric reducer
Inline diameter transition where centerline continuity is required.
Eccentric reducer
Offset diameter transition for pump suction, drainability, or layout-controlled systems.
Cap
End closure for pressure piping, test boundaries, and pipeline extensions.
Stub end
Lap-joint assembly component for systems requiring rotating backing flanges.
Forged fitting
Socket-weld or threaded fitting scope routed separately from wrought butt-weld fitting requirements.
Dimensional standards
Size, class, facing, schedule, and bore are separate commercial decisions.
The page presents standards as quotation routes. The final offer must follow the buyer's piping class, drawing, and approved dimensional basis.
Buttweld fitting dimensions
ASME B16.9 covers NPS 1/2 through NPS 48 factory-made wrought buttwelding fittings
Wall basis
B16.9 covers any producible wall thickness; buyer must state schedule or bore requirement
Forged fitting review
Socket-weld and threaded forged fittings require ASME B16.11 / drawing review and separate class confirmation
Chemical composition
Published chemistry reference.
Use the material test certificate and ordered standard to confirm the chemistry of the delivered product.
| Element | Verified composition | Basis |
|---|---|---|
| Nickel | 58.0 min | Mass % |
| Chromium | 20.0-23.0 | Mass % |
| Iron | 5.0 max | Mass % |
| Molybdenum | 8.0-10.0 | Mass % |
| Niobium plus tantalum | 3.15-4.15 | Mass % |
| Carbon | 0.10 max | Mass % |
| Manganese | 0.50 max | Mass % |
| Silicon | 0.50 max | Mass % |
| Phosphorus | 0.015 max | Mass % |
| Sulfur | 0.015 max | Mass % |
| Aluminum | 0.40 max | Mass % |
| Titanium | 0.40 max | Mass % |
| Cobalt | 1.0 max if determined | Mass % |
Mechanical properties
Mechanical data with product-form context.
The table avoids undocumented product guarantees. Final conformance is tied to ASTM/ASME route and certificate review.
| Form and condition | Tensile strength | 0.2% yield strength | Elongation / hardness |
|---|---|---|---|
| Rod, bar, plate - annealed | 827-1034 MPa | 414-655 MPa | 60-30% elongation; 145-220 HB |
| Rod, bar, plate - solution-treated | 724-896 MPa | 290-414 MPa | 65-40% elongation; 116-194 HB |
| Sheet and strip - annealed | 827-1034 MPa | 414-621 MPa | 55-30% elongation |
| Tube and pipe, cold-drawn - annealed | 827-965 MPa | 414-517 MPa | 55-30% elongation |
| Tube and pipe, cold-drawn - solution-treated | 689-827 MPa | 276-414 MPa | 60-40% elongation |
Applications and corrosion considerations
A commercial page with engineering discipline underneath.
Applications help qualify the enquiry, while corrosion notes flag the review questions that must be resolved before substitution or service approval.
Nickel alloy process piping
Offshore seawater lines
Chemical transfer systems
Pump and vessel tie-ins
Marine and desalination hardware
Heat exchanger piping connections
Sour-service projects requiring review
High-integrity repair spools
Aqueous corrosion
High nickel, chromium, molybdenum, and niobium content supports resistance across oxidizing and nonoxidizing chemical environments, with strong performance against pitting and crevice corrosion.
Seawater and chloride service
The grade is widely considered for seawater-related applications because it resists local attack and chloride-ion stress corrosion cracking better than many austenitic stainless options.
Weld sensitization control
Niobium contributes stabilization against sensitization during welding, supporting intergranular cracking resistance when fabrication procedures and heat input are controlled.
High-temperature oxidation
The alloy has published resistance to oxidation and scaling at elevated temperature, but pressure design and allowable stresses must be checked to the governing code.
Inspection, packing, documentation
Conversion depends on confidence at release.
The product page turns buyer concerns into explicit RFQ controls: PMI, MTC, TPI, NACE or IGC review, packing protection, and document release.
Genuine RTI evidence
Finished fitting forms
RTI component photography supporting geometry, end preparation, surface, and packing review. Material grade is confirmed through heat traceability and the agreed release documents, not visual appearance alone.
PMI
PMI scope should identify parent material, weld seam or forged fitting route where applicable, and final marking.
MTC
Certificate review should confirm heat number, UNS, product standard, chemistry, tensile data, and heat treatment route.
TPI
Witness points may include visual inspection, dimensions, marking, PMI, NDE records, packing, and document release.
NACE
NACE review applies only when the project environment requires sour-service compliance.
Surface protection
Machined faces, gasket surfaces, threads, and bevel ends are protected according to the packing instruction.
Traceable marking
Heat numbers, grade, size, class, standard, and item tags should stay readable through packing and receipt.
Export packing
Wooden case, pallet, moisture barrier, separation, and destination marking requirements are captured at RFQ stage.
EN 10204 3.1
Specify inspection certificate type where the buyer requires manufacturer-issued lot traceability.
Dimensional record
Add dimensional inspection reports for machined flanges, RTJ grooves, bores, bevels, and fitting geometry where required.
Inspection dossier
PMI, MTC, TPI release, NDE, packing list, marking photos, and origin/export documents can be compiled into one dossier.
Commercial FAQs
RFQ questions for Inconel 625 Pipe Fittings.
Answers focus on the details procurement and engineering teams should define before requesting a quotation.
Related pages
Continue the buying path.
Compare related material grades, product forms, and engineering guidance before finalising the RFQ.
Nickel Alloy Pipe Fittings overviewReview the authoritative nickel alloy pipe fittings product-family route.Inconel 625 material dataOpen the source-controlled UNS N06625 benchmark material page.Inconel 625 flangesBuild a matched flange and fitting package.Products platformReturn to the commercial product architecture.
Technical quotation
Have a requirement?
Send the material, size, class or schedule, quantity, and applicable specification. RTI's export team will receive the technical enquiry route.
