ASTM B338 / B861
Titanium Exhaust Gr2 Gr7 Titanium Pipes Titanium Tube With High Quality
Grade: Gr2, Gr7 (Ti-Pd)
Form: Seamless / TIG Welded
Application: Exhaust & Heat Exchanger
Precision Engineering Portfolio
Featured OEM/ODM Titanium Coils & Components
Engineered to ASTM, ASME, DIN, and ISO standards with traceable EN 10204 3.1 Mill Test Certificates and optional BaoTi third-party verification.
Electroplating Spec
Gr2 Anodising Titanium Basket With PP Anode Bags for Electroplating
Grade: Gr2 Commercial Pure
Configuration: Spot-welded Mesh + PP Bag
Resistivity: Zero Bath Contamination
Anodizing Line
Grade2 Titanium Jigs Rack Hook Tube Components for Coating Electroplating
Feature: High Elastic Clamping
Design: Custom Hook/Rack Pitch
Life Cycle: Acid & Alkaline Resistant
Ultra Thin Wall
Gr1/2/9 38mm/51mm/63mm/76mm/89mm/102mm Titanium Pipe Tube Exhaust
OD Range: 38mm up to 102mm
Wall: 1.0mm - 1.2mm Ultralight
Bending: 1.0D - 1.5D Mandrel Ready
ASTM B348
Titanium GR5 ti-6al-4v Block ASTM B348 Standard Price Per Kg
Tensile: ≥ 895 MPa Yield Tested
Surface: Milled / CNC Machined Face
Ultrasonic: AMS 2631 Class A/AA
ASTM F136 ELI
Hot Selling Medical Grade Titanium Block Gr5 Eli Gr23 Titanium Disc for Dental Implant
Purity: Extra Low Interstitial (ELI)
Standard: ASTM F136 / ISO 5832-3
Biocompatibility: 100% Medical Traceable
Race Engineering
Titanium Gr1 Gr2 2inch 3inch 4inch 5inch V Band Clamp With Male and Female Flanges
Sizes: 2", 2.5", 3", 3.5", 4", 5"
Seal Design: Interlocking CNC Groove
Hardware: Anti-Gall Quick Release
ASTM F2063
Nitinol Wire Shape Memory Alloy Superelastic Niti Wires 0.45 0.5 0.55MM
Af Point: -10°C to +35°C Tunable
Superelasticity: Recoverable Strain ≥8%
Diameter: 0.1mm - 2.0mm Micro-spooled
2006
Baoji Hub Foundation
100+ T
Annual Mill Output
99.8%
Batch Compliance Rate
≤ 8h
Engineering Turnaround
Strategic Procurement Insight
Global Procurement Trends in OEM/ODM Titanium Coils
As energy transition accelerates and marine desalination architectures expand, high-purity titanium coil manufacturing faces sweeping shifts in specification audits, metallurgical purity, and supply chain accountability.
1. Near-Net-Shape Strip Coiling
Procurement directors are shifting from conventional wide-slitting methods to precision warm-rolled strip coiling. This reduces scrap rate by up to 18.5% in heat exchanger plate stamping and spiral heat tube winding, optimizing total cost of acquisition (TCA) in aggressive corrosive installations.
2. Pd-Substituted Gr7 & Gr12 Demand
With aggressive chemical handling systems facing mixed chloride and acidic extremes at high temperatures, demand for ASTM B265 Grade 7 (Ti-0.15Pd) and Grade 12 (Ti-Mo-Ni) coiled tubing has increased 34% year-over-year compared to standard Grade 2 CP titanium.
3. Strict EN 10204 3.1 Traceability
EPC contractors and nuclear/offshore quality managers now mandate single-heat traceability down to sponge chlorination batches. Jovzi’s integrated manufacturing route ensures full documentation from VAR/EB vacuum melting ingots straight through coiled strip packing.
| Titanium Grade | Metallurgical Standard | Tensile Yield Strength (min) | Corrosion Resistance Threshold | Primary OEM/ODM Coil Applications |
|---|---|---|---|---|
| Gr1 (CP 4) | ASTM B265 / ASME SB265 | 170 MPa (Tensile: 240 MPa) | Low-stress oxidizing acids, marine immersion | Deep drawn plate coils, plate-and-frame heat exchangers |
| Gr2 (CP 3) | ASTM B338 / ASTM B861 | 275 MPa (Tensile: 345 MPa) | Exceptional in seawater, brine, wet chlorine | Exhaust helices, HVAC condensing coils, reaction vessels |
| Gr7 (Ti-0.15Pd) | ASTM B265 / ASME SB338 | 275 MPa (Tensile: 345 MPa) | Exceptional resistance in boiling chloride/reducing acids | Flue gas desulfurization (FGD), acidic petrochemical coils |
| Gr9 (Ti-3Al-2.5V) | AMS 4943 / ASTM B338 | 515 MPa (Tensile: 620 MPa) | High hydraulic pressure + salt spray endurance | Aerospace hydraulic tubing coils, motorsport fluid delivery |
| Gr12 (Ti-Mo-Ni) | ASTM B265 / ASME SB265 | 345 MPa (Tensile: 483 MPa) | Resistant to high-temp crevice pitting up to 300°C | Geothermal coiled heat transfer, evaporative salt plants |
Manufacturing Innovation
Engineering Rigor in Custom Titanium Coil Fabrication
How precision coiling, cold-drawing, and protective atmosphere annealing eliminate spring-back and achieve strict wall-thickness uniformities.
Vacuum Annealing & Grain Refinement
Titanium absorbs interstitial oxygen, nitrogen, and hydrogen at temperatures above 400°C, causing surface embrittlement. Jovzi employs horizontal high-vacuum annealing furnaces (vacuum grade ≤ 1×10⁻³ Pa) to preserve ductile alpha-phase equiaxed grains. This provides flawless flaring, orbital welding, and bending performance in heat exchangers.
Continuous Eddy Current & Hydrostatic Testing
Every single linear meter of Jovzi titanium tubing designated for coils undergoes online automated Eddy Current Inspection (per ASTM E426) paired with hydrostatic proof testing up to 31.5 MPa. This ensures zero pinholes, zero micro-inclusions, and leak-free reliability under cycling pressures.
CNC Roll Bending & Dimensional Retention
Bending thin-wall titanium pipe down to tight centerline radii (CLR) typically leads to ovality and wall thinning. Utilizing multi-axis servo CNC mandrel benders with real-time laser profile tracking, Jovzi holds coil ovality below 5% and wall-thinning ratios under 8%.
Factory Strength & Heritage
Why Sourcing from Jovzi Titanium Gives You a Market Edge
Strategically located in Bayu Town High-Tech Development Zone, Baoji, Shaanxi — China's Titanium Valley — Jovzi integrates raw material supply, precision forging, CNC machining, and direct export capabilities.
19+ Years Metallurgy Leadership
Founded in 2006, Jovzi combines 4 senior and 5 intermediate metallurgical engineers overseeing full life-cycle fabrication from 0-grade sponge titanium to finished structural assemblies.
Authorized BaoTi Test Center Quality
Beyond internal ISO 9001:2015 quality control, third-party physical, chemical, and microscopic metallographic reports are authorized and executed directly by the state-level BaoTi Testing Center.
81%–90% Export Volume
Serving precision tier-1 OEMs and distributors across North America, Germany, Japan, Belgium, and Southeast Asia with DDP, CIF, and door-to-door multimodal export customs solutions.
Agile OEM/ODM Customization
Over six years of specialized buyer-label and drawing customization experience. From rapid CAD/STEP prototyping to volume CNC mass fabrication with response times within 8 hours.
Procurement Knowledge Base
Frequently Asked Questions for Titanium Coil Procurement
Direct, technical answers addressing minimum orders, tolerance limits, test certifications, and lead times.
What titanium grades can Jovzi supply in coil and coiled tubing formats?
We supply commercially pure titanium Grade 1 (UNS R50250) and Grade 2 (UNS R50400) for uncompromised cold workability and general chemical corrosion resistance. For extreme environments, we supply Grade 7 (Ti-0.15Pd, UNS R52400) and Grade 12 (Ti-0.3Mo-0.8Ni, UNS R53400). High-strength aerospace and hydraulic systems can utilize Grade 9 (Ti-3Al-2.5V, UNS R56320). All materials comply with ASTM B338, ASTM B265, ASTM B861, or ASME SB338 specifications.
How does Jovzi ensure seamless dimensional tolerance and circularity in coiled tubing?
Our titanium coils are bent using computer-controlled, multi-axis mandrel roll bending machines. We control outside diameter (OD) tolerance within ±0.05 mm and wall thickness variations below 8%. For critical heat exchange loops, every coil is measured using continuous laser micrometer checks and custom Go/No-Go concentricity ring gauges to verify absolute roundness and fitment.
What third-party documentation accompanies export shipments?
Every lot is delivered with an EN 10204 3.1 Mill Test Certificate (MTC) detailing heat identification numbers, complete wet chemical analysis (C, Fe, N, O, H, Ti balance), mechanical tensile, yield, and elongation test values, and flattening/flaring test results. Additionally, independent third-party physical and chemical verification certificates issued by the authorized BaoTi Test Center or SGS/TÜV can be provided upon project specification.
What is your Minimum Order Quantity (MOQ) and production turnaround?
For standard raw material coils and inventoried tube sizes (e.g., OD 38mm, 51mm, 63mm, 76mm), the MOQ starts from just 1 piece or 1 kg. Custom OEM/ODM coil geometries and non-standard wall thicknesses typically carry an MOQ of 50 kg to 200 kg depending on billet dimensions. Sample and rapid tooling prototypes can be completed in 7–10 days, while mass containerized manufacturing runs average 20–30 calendar days.
Can Jovzi handle custom welded subassemblies, flanges, and fittings attached to coils?
Yes. Jovzi offers full OEM/ODM modular assembly. We can weld ASTM B381 forged flanges, ASME B16.5 lap joints, ASTM B363 stub ends, titanium V-band clamps, or threaded unions directly to the coil inlets/outlets. All welding is conducted in an ultra-pure argon environmental chamber or trailing shield setup by ISO/ASME certified TIG welders, guaranteeing silver-bright, oxidation-free weld seams.
Partner with Baoji's Premier Titanium Coil Factory
Consult with our metallurgists and engineering team today. Send us your CAD drawings, ASTM specifications, or custom dimensional sketches for rapid technical and commercial quotation.