Gr2 Titanium Corrugated Tube Bellows ASTM B338 Flexible Heat Exchanger Tubing
Опубликовано Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd от 2026-10-25
1. Product Identity
Manufactured in Shaanxi Baoji China, Gr2 titanium corrugated tube also named titanium bellows / ripple tube, is flexible corrugated piping component processed from seamless Gr2 titanium base tube. It compensates thermal expansion, vibration displacement and installation misalignment for corrosive process systems. Widely used in chemical heat‑exchanger units, salt‑lake lithium equipment and brine circulating pipelines. Standard and custom corrugation profile are supported.
2. Core Technical Parameters
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Material Grade: Grade2 Commercially Pure Titanium (TA2, UNS R50400)
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Base Tube Standard: ASTM B338, ASTM B861, ASTM B862, ASME SB338
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Manufacturing Process: Seamless titanium tube → hydro‑forming / mechanical corrugating → stress‑relief heat treatment
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Feature: Flexible, vibration‑absorbing, thermal‑expansion compensation
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Application: Corrosive medium heat‑exchanger, brine circulation pipeline, equipment vibration isolation, pipeline displacement compensation
3. Chemical Composition (wt%, ASTM Standard)
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Grade
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Ti
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Fe
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O
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C
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N
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H
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Alloy Elements
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Gr2
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Balance
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≤0.30
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≤0.25
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≤0.08
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≤0.03
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≤0.015
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—
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4. Mechanical & Corrosion Performance
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Tensile Strength: ≥345 MPa
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Yield Strength: ≥275 MPa
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Elongation: ≥20%
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Corrosion Resistance: Excellent resistance against seawater, brine and chloride‑rich working medium; maintains stable anti‑corrosion property after corrugation forming.
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Functional performance: Absorb thermal deformation and mechanical vibration; stress‑relief treatment reduces residual stress after forming to extend cyclic service life.
5. Full Size Range
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Base tube outer diameter: Custom based on project requirement
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Corrugation parameter: Custom wave height, wave pitch, number of corrugations
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Effective flexible length & total assembly length: Customized per drawing
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End connection option: Plain end for welding, flange integrated assembly, threaded connector
6. Surface Treatment Options
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Pickled surface: Remove heat‑treatment oxide scale, standard finish for chemical process environment.
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Inner‑outer polishing: Reduce medium deposition inside bellows for easy cleaning in circulating brine system.
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Degreasing cleaning: Eliminate forming oil residue before delivery.
7. Material Comparison: Titanium Corrugated Tube vs 316L Stainless Steel Bellows
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Item
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Gr2 Titanium Corrugated Bellows
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316L Stainless Steel Bellows
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Chloride / brine resistance
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Excellent anti‑pitting performance
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Prone to pitting and crevice corrosion
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Weight
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Light‑weight 4.51 g/cm³
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Heavy weight 7.98 g/cm³
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Cyclic fatigue performance
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Stable after stress‑relief treatment
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Acceptable under non‑chloride environment
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Service life in salt‑containing medium
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Long service cycle
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Short service life, risk of early leakage
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Titanium corrugated tube solves leakage failure problem caused by stainless steel corrosion for high‑chloride heat‑exchanger and brine circulation loop.
8. Strict Quality Control & Test Items
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Raw seamless base tube inspection: Verify material certificate, dimension and surface condition.
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Corrugation forming inspection: Check wave shape uniformity, no crack or micro‑tear on wave crest and trough.
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Stress‑relief heat‑treatment process record management.
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Dimension inspection: Measure OD, wave parameters, total assembly length, end‑face tolerance.
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Air tightness test: Mandatory leak test for every finished bellows component.
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Issued documents: EN10204 3.1 MTC for base tube, dimension report, air‑tightness test record, batch traceability.
9. Export Packaging & Shipment
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Inner packing: Anti‑rust film and soft foam filling to protect corrugation waveform against squeezing and deformation.
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Outer packing: Fumigated export wooden case with shock‑absorbing filler for sea freight.
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Marking: Label grade, key dimension, batch number on each product.
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Trade terms: FOB, CIF, DDP; air shipment for small‑size sample order, sea shipment for bulk project order.
10. Inquiry & Custom Service (Send Your Drawing Now)
We produce Gr2 titanium corrugated tube / bellows with custom wave profile and various end connection forms according to customer drawings.
Please provide following information for accurate quotation: 1) Outer diameter, total length and corrugation parameters; 2) End connection type (weld end / flange / thread); 3) Working medium, pressure, temperature and cyclic requirement; 4) Order quantity and delivery lead‑time expectation.
Website: www.sxqytd.com
Contact us for technical evaluation and formal quotation.