Seamless Titanium Fittings
Seamless Titanium Fittings supplied by titanium grade, outside diameter or NPS, wall thickness, end preparation, dimensional standard and inspection requirements for corrosion-resistant piping systems.
- Material
- Titanium Grade 2, Grade 7 or Grade 12 as specified
- Product Standard
- ASTM B363 / ASME SB363 where applicable
- Dimensions
- ASME B16.9, B16.11 or approved drawing
- Documents
- MTC, dimensions and heat/lot traceability
Product Detail
Product Introduction
Seamless titanium fittings are formed or manufactured without a longitudinal fusion-welded seam in the finished fitting body. Seamless describes the construction route, not a universal guarantee of pressure rating or freedom from all fabrication welds in an assembly. The order must define fitting geometry, grade, source material, size, wall, forming route, heat treatment, ends, dimensional standard and inspection.
Product Specifications
| Product | Seamless Titanium Fittings | Material Options | Titanium Grade 2, Grade 7 or Grade 12 as specified |
|---|---|---|---|
| Forms | Elbow, tee, reducer, cap, stub end or drawing-specific fitting | Typical Inquiry Range | NPS 1/2 to 24 typical standard inquiry range; large/custom sizes by review |
| Product Standard | ASTM B363 / ASME SB363 where applicable | Dimensional Basis | ASME B16.9, ASME B16.11 or approved drawing as applicable |
| Wall | Schedule or nominal wall thickness matched to the connected pipe and design | Ends | Butt-weld, socket-weld, threaded or drawing-defined ends |
| Manufacturing | Seamless, welded, formed, forged, machined or fabricated as specified | Surface | Pickled, cleaned, machined or project-specific finish |
| Inspection | Visual, dimensions, wall, ends and specified NDT | Documents | MTC, heat/lot traceability and inspection report |
Typical ranges are quotation guidance, not a stock guarantee. Final availability and tolerances are confirmed against the complete RFQ and design code.
Selection and Configuration
- Seamless construction boundary: Confirm which pressure-containing section is seamless and whether any attachment, repair or assembly weld is permitted.
- Forming and wall control: Define starting product, hot or cold forming, minimum finished wall, ovality, thinning and heat treatment.
- Availability and substitution: Large sizes or special geometries may require welded construction; substitution needs buyer and design approval.
Send the piping specification or drawing
Include grade, NPS or OD, wall/schedule, geometry, ends, quantity, tests and documents.
Chemical Composition
Weight percent; maximum unless a range is shown. Titanium is the balance. The ordered grade controls.
| Grade / UNS | Pd | Mo / Ni | Fe | O | C | N | H | Ti |
|---|---|---|---|---|---|---|---|---|
| Grade 2 / R50400 | — | — | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 | Balance |
| Grade 7 / R52400 | 0.12–0.25 Pd | — | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 | Balance |
| Grade 12 / R53400 | — | 0.20–0.40 Mo; 0.60–0.90 Ni | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 | Balance |
Mechanical Properties – Annealed Source Material Reference
| Grade | Ultimate Tensile Strength min | 0.2% Yield Strength min | Elongation min |
|---|---|---|---|
| Grade 2 | 345 MPa (50 ksi) | 275 MPa (40 ksi) | 20% |
| Grade 7 | 345 MPa (50 ksi) | 275 MPa (40 ksi) | 20% |
| Grade 12 | 483 MPa (70 ksi) | 345 MPa (50 ksi) | 18% |
Representative wrought-source material minima. Fitting acceptance, heat treatment and test specimens must follow the ordered material/product specification and size.
Typical Physical Properties
| Grade | Density | Elastic Modulus | Thermal Conductivity | Thermal Expansion |
|---|---|---|---|---|
| Grade 2 | 4.51 g/cm³ | Approx. 105 GPa | Approx. 16.4 W/m·K | Approx. 8.6 µm/m·K |
| Grade 7 | Approx. 4.51 g/cm³ | Approx. 105 GPa | Approx. 16 W/m·K | Approx. 8.6 µm/m·K |
| Grade 12 | Approx. 4.54 g/cm³ | Approx. 103 GPa | Approx. 16 W/m·K | Approx. 8.6 µm/m·K |
Typical engineering references, not inspection acceptance limits.
Certificates & Inspection Records
Services We Can Provide
Product Packaging
Fittings are capped or wrapped to protect clean ends, bevels, threads and machined faces. Items are separated by grade, size and heat/lot, then packed in reinforced cartons or export cases according to geometry and quantity.
Application Scenarios
Chemical Processing
Corrosion-resistant piping for acids, chlorides and process media after grade compatibility review.
Power & Energy
Cooling-water, condenser and auxiliary piping requiring traceable titanium components.
Marine & Desalination
Seawater and chloride-bearing piping systems designed for the selected titanium grade.
FAQ
Does seamless mean the fitting has no weld anywhere?
It means the fitting body is not made with a longitudinal fusion-welded seam. Assemblies or attached features must still be defined separately.
Is seamless automatically stronger than welded?
Not automatically. Pressure design depends on grade, wall, geometry, manufacturing quality, heat treatment and governing code.
What records verify seamless supply?
Request source-material traceability, manufacturing-route statement, dimensions, wall mapping, heat treatment and agreed NDE.
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