Seamless and welded titanium tubes and pipes in CP Gr1/2, near-ฮฑ Gr9 (Ti-3Al-2.5V), Pd-stabilized Gr7, and Gr12 (Ti-0.3Mo-0.8Ni). OD ร3โ219 mm, WT within ยฑ10% of nominal, lengths up to 18 000 mm. Supplied to ASTM B338 / B861 / B862 with EN 10204 3.1 MTR and 100% eddy-current testing; standard stock ships in 5โ7 days with non-standard dimensions and alloy in 6โ8 weeks.
Honest Positioning
BOZE Metal is a sourcing and processing partner for titanium tube and pipe, not a primary melter. The following scope clarifications are necessary for accurate technical and commercial alignment on titanium heat-exchanger and process-pipe projects.
Ingot, VAR, and EBM melting is not in our vertically integrated scope. We source tube-billet and welded-tube strip from upstream mills that hold the metallurgical chain-of-custody; our scope is sourcing, processing, and quality verification.
Material specifications are applied "where applicable" per order. AS9100D governs our QMS, not every shipment classification. Confirm criticality class, specification (ASTM B338, B861, B862, AMS), and required documentation per RFQ.
We supply tube to medical material specifications (ASTM F67, F136) where applicable. We are a material supplier and processor, not a finished medical device manufacturer; downstream device-level certification remains the device maker responsibility.
Engineering review and quotation timelines are confirmed at the RFQ stage based on the order complexity, alloy, OD x WT, and downstream processing required. Standard stocked items typically receive a same-week response.
100 percent eddy-current testing (ET) per ASTM E426 is standard. Ultrasonic examination per ASTM E213 and ASME Sec. V is available and applied where the order specification requires it; UT class and acceptance criteria are stated at the RFQ, not assumed by default.
Grade Library
Nine procurement-grade entries mapping chemical composition, UNS designation, available tube / pipe forms (seamless, welded, U-bend, coil), and typical use. Specific OD, WT, and heat-treat state are confirmed per order.
| Family | Grade / UNS | Nominal Composition | Tube / Pipe Form | Typical Use |
|---|---|---|---|---|
| CP Titanium | Grade 1 UNS R50250 | Unalloyed Ti, lowest interstitial | Seamless, Welded, U-Bend | High-formability chemical and biomedical service |
| CP Titanium | Grade 2 UNS R50400 | Unalloyed Ti, balanced strength | Seamless, Welded, U-Bend, Coil | Workhorse CP - heat-exchanger tubing, condenser / cooler service |
| CP Titanium | Grade 3 UNS R50550 | Unalloyed Ti, higher strength | Seamless, Welded | Higher-stress chemical service |
| Near-alpha | Grade 9 (Ti-3Al-2.5V) UNS R56320 | 3% Al, 2.5% V, alpha-beta lean alloy | Seamless, Welded | High-pressure hydraulic and aerospace tubing, moderate strength |
| Corrosion-resistant | Grade 7 (Ti-Pd) UNS R52400 | CP + 0.12-0.25% Pd | Seamless, Welded | Reducing acid (HCl), chemical-industry heat-exchanger service |
| Corrosion-resistant | Grade 12 (Ti-0.3Mo-0.8Ni) UNS R53400 | CP + 0.3% Mo, 0.8% Ni | Seamless, Welded | High-temperature salt water, hot brine, MSF desalination |
| Aerospace alpha-beta | Grade 5 (Ti-6Al-4V) UNS R56400 | 6% Al, 4% V, alpha-beta alloy | Seamless, Welded | High-strength hydraulic lines, aero structural tubing |
| Aerospace alpha-beta ELI | Grade 23 (Ti-6Al-4V ELI) UNS R56401 | 6% Al, 4% V, low interstitials | Seamless | Fracture-critical, medical-grade heat-exchanger service (where applicable) |
| High-temperature | Ti-6Al-2Sn-4Zr-2Mo (Ti-6-2-4-2) UNS R54620 | 6Al-2Sn-4Zr-2Mo | Seamless | High-temperature aero engine and exhaust sections |
Composition and form matrix indicative. Specific OD x WT combinations, tolerances, and heat-treat state are confirmed per order.
Specification Reference
Ten procurement-critical attribute / value / standard references for titanium tube and pipe stock. Use this as a cross-check table when drafting an RFQ; the applicable spec is selected per order.
| Attribute | Value / Range | Standard Alignment |
|---|---|---|
| Outside diameter (OD) range | O.D. 3.0 mm to 219 mm (1/8 inch to 8 inch NPS) | ASTM B338 S4, ASTM B861 S4 |
| Wall-thickness (WT) tolerance | Within plus or minus 10 percent of nominal wall thickness | ASTM B338 S7, ISO 1127 |
| Length | Random length to 18 000 mm, cut-to-length available | ASTM B338 S4 |
| Seamless forms | Cold-drawn seamless tube, hot-extruded seamless pipe | ASTM B861 |
| Welded forms | ERW / HFW welded tube with 100% ET, weld bead conditioned | ASTM B862 |
| Tensile strength (UTS) | Gr.2 >= 345 MPa, Gr.5 >= 895 MPa, Gr.12 >= 483 MPa | Room-temperature tensile per ASTM E8 |
| Elongation | Gr.2 >= 20 percent, Gr.5 >= 10 percent, Gr.12 >= 18 percent | ASTM E8, 4D gauge |
| Non-destructive testing | 100% eddy-current (ET) per ASTM E426, UT per ASTM E213 on request | ASTM B338 S9, ASME Sec. V |
| Hydrostatic / pneumatic test | Hydrostatic test on every tube, pneumatic where required by spec | ASTM B338 S10 |
| Mill certification | EN 10204 3.1 standard; 3.2 with independent witness on request | EN 10204, ASTM B338 S14 |
Grade 2 (CP) seamless and welded titanium tube is the workhorse for shell-and-tube heat exchangers in refinery overhead condensers, chemical reactor feed-effluent exchangers, and chlorine-bearing process service. Tubes are supplied in mill-annealed temper with 100 percent eddy-current testing, ready for U-bending and tube-sheet rolling without further heat treatment.
Grade 12 (Ti-0.3Mo-0.8Ni) welded pipe and Grade 2 U-bend tubing carry hot brine and seawater through multi-stage flash (MSF) and multi-effect distillation (MED) trains, and through surface condensers in coastal and nuclear power plants. Gr12 is selected for its hot-salt-water corrosion margin; Gr2 is the standard seawater choice for surface condensers.
Additional Applications
Four additional service environments where titanium tube and pipe is the default specification, with the grade and form that procurement teams typically call out.
Hydraulic and instrument tubing on offshore platforms in seawater and sour-service environments. Grade 2 and Grade 9 selected by chloride and H2S exposure.
Grade 5 (Ti-6Al-4V) and Grade 9 (Ti-3Al-2.5V) hydraulic and fuel lines, AMS 4944 / 4945 supply. High-pressure pneumatic and fuel system tubing.
Surface condensers, feed-water heater tubing, and FGD absorber recirculation lines. Grade 2 standard; Grade 7 or 12 for chloride / reducing-acid exposure.
Reactor feed lines, chloride-bearing process piping, and reducing-acid (HCl) heat-exchanger service where Grade 7 (Ti-Pd) is the standard specification.
Production Workflow
From incoming VAR-refined ingot through tube-billet preparation, cold-rolling or welding, bright anneal, 100 percent NDT, and EN 10204 3.1 MTR issuance - six controlled stages with documentation checkpoints at each handoff.
Grade-certified sponge titanium is VAR or EBM melted to ingot, with upstream mill heat-lot, chemistry, and macro-etch test records verified against the procurement specification before tube-stock production begins.
For seamless product, cylindrical billets are hot-extruded or cross-roll pierced to form the mother tube. For welded product, strip or sheet coil is slit to width and edge-conditioned prior to forming.
Seamless tube is reduced to final OD x WT on multi-stand cold pilger mills or draw benches with intermediate anneals. Welded tube is roll-formed then welded by HFW or TIG with full-penetration autogenous or wire-additive process; weld bead is conditioned online.
Final recrystallization anneal under protective atmosphere (O2 below 50 ppm) restores ductility. Tube is then straightened, cut to length, and ends deburred to the dimensional callout.
Every tube is eddy-current tested (ET) for longitudinal and transverse defects per ASTM E426. Hydrostatic test at the spec pressure; pneumatic test where the order requires. UT per ASTM E213 is added where the spec calls for Class A or B.
EN 10204 3.1 mill test report (chemistry and mechanical) is issued per heat and lot, with dimensional, NDT, and pressure-test records attached. Tube is end-capped, bundled, and packed in seaworthy wooden cases or plywood crates.
Operating Boundaries
Three service-environment boundaries that drive alloy selection and process planning. Confirm these constraints at the RFQ stage.
Unalloyed CP titanium (Gr.1 or Gr.2) is sensitive to intergranular oxidation above 300 C in strongly oxidizing or specific fluoride-bearing media. For high-temperature or high-pressure structural service, specify Gr.5 (Ti-6Al-4V) or Gr.7 (Ti-Pd) where the medium is a hot reducing acid.
In seawater and chloride-bearing service, titanium tubes must be electrically isolated from carbon-steel tube-sheets and flanges. Use insulating gaskets, PTFE or EPDM washers, and titanium-clad tube-sheets; avoid direct carbon-steel contact to prevent galvanic-couple corrosion of the ferrous member.
Cold bending must keep bend radius R >= 3 x OD to avoid wall thinning and wrinkling. For tighter geometry or thin-wall condenser U-bends, use mandrel-controlled induction bending with post-form stress-relief anneal; ovality is held within 2 percent of nominal OD on request.
AS9100D
Aerospace Quality Management System
ISO 9001:2015
Certified Quality Management System
Medical Device Quality Standard
MTR Traceability
Material Test Reports with Every Shipment
Quality
Every titanium part is verified, documented, and traceable before it leaves our Baoji facility โ because in aerospace and medical manufacturing, documentation is just as critical as the cut itself.
Coordinate Measuring Machines verify every critical dimension against GD&T to ยฑ0.005 mm before any part ships.
Project-specific First Article Inspection Reports delivered for every new part number โ engineered for fast PPAP / FAIR approval.
Material Test Reports (mill certificates) accompany every shipment for full source-to-component traceability.
Procurement and Lead Time
Stock availability, MOQ flexibility, and lead-time windows for titanium tube and pipe. Final lead time is confirmed at the RFQ stage against the current upstream-mill schedule.
Mill-schedule-aligned production for seamless (cold-drawn) and welded (HFW) tubes in standard OD x WT combinations. Prototype heat-exchanger sample quantities down to a few hundred kilograms are feasible through to ton-scale industrial procurement orders on the same upstream mill source.
Standard stocked OD x WT combinations have no minimum order quantity for engineering sampling. Non-stock dimensions, custom alloys, and U-bend coil fabrication are scheduled against upstream-mill batches; MOQ is determined by the mill campaign and confirmed at RFQ.
Standard stocked tube items ship in 5-7 days. Custom OD x WT combinations, special-alloy pulls, and U-bend coil fabrication run 6-8 weeks, driven by upstream-mill rolling campaign and post-form NDT cycle. Engineering review and final quotation timing is confirmed at the RFQ stage.
Dimensional Comparison
Four procurement-relevant dimensions comparing industrial CP-titanium tube (Gr.2) against the conventional Cu-Ni (B10 or B30) and austenitic stainless (316L) alternatives in seawater and process-fluid service.
| Dimension | CP Titanium (Gr.2) | Cu-Ni Alloy (B10 or B30) | Austenitic SS (316L) |
|---|---|---|---|
| Seawater service life | Over 30 years (effectively maintenance-free in clean seawater) | 10-15 years (Cu-Ni susceptible to sulphide and ammonia attack) | 5-8 years (316L prone to pitting and crevice corrosion in chloride media) |
| Density and mass penalty | 4.51 g/cm3 (about 45 percent lighter than Cu-Ni) | 8.9 g/cm3 (heavy, increases support-structure load) | 7.93 g/cm3 (intermediate) |
| Heat-transfer stability | High (oxide film resists fouling, no spalling) | Moderate (verdigris or patina can build and shed) | Lower (biofouling and scale attachment frequent) |
| Life-cycle cost (LCC) | Higher initial investment, lowest total LCC over service life | Moderate initial, mid-life LCC due to inspection and repair | Lowest initial, highest maintenance and replacement frequency |
Applications
From aircraft structures to surgical implants, precision titanium machining delivers the strength, bio-compatibility, and corrosion resistance that demanding industries rely on.
Brackets, fittings & frames machined from Grade 5 Ti-6Al-4V under AS9100D-controlled processes.
Implant-grade Grade 23 ELI (Ti-6Al-4V ELI) parts machined in cleanroom-controlled environments.
Corrosion-resistant titanium valves, shafts & housings engineered for extreme offshore service.
High-strength titanium bolts, studs & hardware for racing and high-performance vehicles.
Engineering and Procurement FAQ
Six common buyer questions on welding practice, ASTM B338 conformance, U-bend forming, large-project chemistry consistency, price-hedging strategies, and galvanic isolation.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium โ from raw material to precision engineering. AS9100D, & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.
Certifications verified by ASTM International titanium material specifications (B265, B348, B381, F136, F2924) with full EN 10204 3.1 mill test certification. Our quality system is operated under AS9100D by Baoji Boze Metal Products Co., Ltd.