Top China Titanium Tubes Manufacturer & Factory

These three ASTM standards define distinct product forms and manufacturing routes for titanium tubes:
• ASTM B338 covers both seamless and welded titanium and titanium alloy tubes intended specifically for surface condensers, evaporators, and heat exchangers. It mandates rigorous flattening, flaring, reverse flattening, and 100% pneumatic or hydrostatic testing.
• ASTM B861 governs seamless titanium pipe and tube designed for general corrosion-resistant and elevated-temperature industrial service, typically handling severe internal hydraulic or process pressure.
• ASTM B862 specifically regulates welded titanium pipe fabricated from flat-rolled products with an automated welding process, predominantly used for large-diameter chemical ducting and low-pressure municipal conduits.

Yes, provided the tubing is supplied in the fully annealed condition and the bend radius respects metallurgical strain limits. For Commercially Pure Grade 2, minimum centerline bend radius is typically 2.5 to 3 times the Tube Outside Diameter (OD). For aerospace Grade 9 (Ti-3Al-2.5V), bending mandrels with internal wiper dies and specialized drawing lubricants are required to maintain roundness (ovality < 5%). All Navzo tubing destined for flaring complies with the expansion requirements of ASTM B338, permitting a minimum 20% to 24% outer diameter expansion with zero macroscopic fissures under 30x optical magnification.

Internal pressure ratings are derived from the classical Barlow's Formula: P = (2 × S × t) / D, where P is internal burst or working pressure (MPa or PSI), S is allowable design stress (typically 2/3 of minimum yield strength at room temperature per ASME Section VIII Div 1), t is nominal wall thickness, and D is outside diameter. Because Grade 5 and Grade 9 possess yield strengths roughly 2 to 3 times greater than standard 316L stainless steel, titanium tubular lines achieve equivalent pressure capacities with wall thicknesses reduced by up to 50%, resulting in staggering structural mass reductions.

Titanium is cathodically noble (+0.05V to -0.05V in standard seawater). When placed in direct electrical contact with less noble metals (such as 6061-T6 aluminum at -0.90V or carbon steel at -0.65V) in an electrolyte, accelerated galvanic corrosion of the neighboring metal will occur. We mitigate this through three engineering solutions: (1) Applying Physical Vapor Deposition (PVD) dielectric barrier coatings to the titanium fastener or tube flange; (2) Supplying customized non-conductive PTFE, PEEK, or Delrin isolation bushings; and (3) Implementing high-performance anti-seize paste containing zinc or nickel particles that physically interrupt electron transfer between mating surfaces.

Every commercial and aerospace consignment leaves our Baoji facility accompanied by a certified EN 10204 Type 3.1 inspection documentation package. This includes: complete optical emission spectrometry (OES) chemical analysis verifying interstitial levels (C, O, N, H, Fe); tensile, yield, and elongation test results; hydrostatic pressure verification charts; Eddy Current (ET) inspection logs per ASTM E426; Ultrasonic (UT) wall mapping reports per ASTM E213; and dimensional gauge compliance sheets verified by calibrated digital coordinate measuring machines (CMM).

For standard catalogue Grade 2 and Grade 5 fasteners and standard-dimension titanium tubing (OD 6.0 mm to 63.5 mm), our factory maintains vast inventories of annealed hollow blooms and rolled bars, permitting order dispatches within 3 to 7 business days with MOQs starting at 100 to 200 pieces. For custom cold-pilgered tube dimensions, exotic wall thicknesses (WT ≤ 0.5 mm or ≥ 8.0 mm), or bespoke multi-axis CNC parts, custom tooling runs typically require 15 to 25 production days, with rapid prototype sampling available in as few as 5 days.

Navzo provides four distinct surface finishing categories:
• Mechanical Polish / Satin Brushed: Standard for industrial heat exchangers, delivering an average surface roughness of Ra 0.4 μm to 0.8 μm.
• Electropolishing (EP): Essential for high-purity pharmaceutical and semiconductor gas lines, achieving ultra-smooth finishes down to Ra < 0.2 μm that eliminate micro-fissure bacterial adhesion.
• Electrochemical Anodizing (Type II & Type III): Generates brilliant oxide layers in gold, blue, green, and purple via precise voltage modulation, enhancing cosmetic appeal and environmental corrosion resistance.
• Thermal Burnt-Blue & PVD: Premium high-temperature oxidation and vacuum nitride deposition ideal for automotive performance exhausts, high-end cycling, and severe-wear dynamic mechanical fasteners.

Titanium possesses a low thermal conductivity and an active surface oxide layer. Under high torque clamping loads, sliding friction between identical titanium mating threads can rupture this oxide film, resulting in localized microscopic friction welding known as galling or thread seizure. Navzo combats galling by: (1) Precision rolling rather than cutting threads, which produces burnished, ultra-smooth thread flanks with superior compressive residual stress; (2) Applying vacuum PVD or MoS₂ solid-film lubricants; and (3) Mandating that assembly technicians utilize high-grade molybdenum disulfide or copper-free anti-seize compounds during final torque installation.