Complete Solution to Type Selection of Titanium Heat Exchanger| Class 4 structure + Class 7 medium + Domestic import price +5 steps to avoid pits

Published by Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd on 2026-07-30

Baoji as a domestic titanium valley industrial base,titanium pipeWidely used in chlor-alkali, PTA, seawater desalination, chemical metallurgy and other corrosion conditions pipeline system.Many projects appear pipeline leakage fault, the root cause is often not medium corrosion, buttitanium pipeThe matching degree of piece technology, material and parameter selection is insufficient.Secondary brine pipeline project of a 600,000 ton/year caustic soda plant, Drawing requires TA10 material 1.5D long radius stamping elbow, Field use of TA2 welded short radius elbows, Cracking of weld occurred after 1‑2 years of operation in brine containing chloride ion, medium leakageThe TA10 stamping elbow selected in compliance can maintain stable operation under the same working conditions.Combined with many years of practical experience in titanium non-standard machining, this paper combs four categoriestitanium pipeParts technology, seven types of adaptation media, market conditions and procurement processing points to note, convenient industry to carry out selection reference.

Core Selection Conclusion:titanium pipeParts selection can not only refer to the material brand, molding process, structural parameters will also affect the equipment operation cycle.stamping, weld, forge, There are differences in four kinds of casting process adaptation scenarios, Improper selection is prone to leakage cracking, Match the corresponding products according to the working conditions, It helps the pipeline system run smoothly.

titanium pipeA piece is a weak node in a chemical pipeline system, Products include elbows, three links, transition pipe, Reducer and other accessories, Undertake pipeline diversion, medium split flow confluence, Different pipe diameter transition connection function.Chemical pipeline system, Many pipe failures are not caused by corrosion of the material itself, But the grain size of HAZ is coarse, Elbow radius parameter is too small, Cast pipe fittings are caused by process factors such as pore defects.Pitting and crevice corrosion are easy to occur in conventional stainless steel pipes under chloride ion and reducing acid conditions.titanium pipeParts can generate self-healing passivation film, chloride ion resistance, dilute acid, Good seawater corrosion performance, No metal ion precipitation pollution medium, in chlor-alkali, sea water desalination, More applications in pharmaceutical and chemical projects, can be matched withtitanium pipeand form a complete pipeline system.

in the markettitanium pipeThe main stream of parts is divided into stamping, weld, forge, Casting four types of molding technology, Different process adaptation specifications, pressure conditions, Usage scenarios are different.Stamping pipe fitting DN15‑DN600 medium and small diameter thin-walled pipe, suitable for batch industrial projects;Welded pipe fittings adapt DN50 ‑ DN800 medium and thick wall, non-standard angle custom pipe, flexible adaptation;Forging pipe fittings are mostly used for DN15‑DN300 small diameter high pressure working conditions, Overall structure without weld, Excellent structural strength performanceCast pipe fittings are suitable for DN100‑DN800 large diameter and complex pipe fittings.Working condition matching, conventional low pressure normal temperature industrial pipeline, can choose stamping pipe fittings;Non-standard special-shaped, large-angle pipeline, welding pipe fittings can be selected;High pressure, high strength pressure pipe forging priority fittings;Large diameter complex structure pipeline, casting pipe fittings can be selected.Stamped pipe fittings have balanced comprehensive performance and are a common choice for general chemical working conditions. They are compatible withTitanium forgingComplete the complete set of high-pressure pipe flange fittings.

Combined with seven common operating conditions,titanium pipeThe material and process of the parts can be matched in the following ways: ordinary seawater, neutral salt water containing chloride ions, TA2titanium pipeParts, stamping, welding process can be adapted;80‑120℃ wet chlorine corrosion condition, TA10 material 1.5D long radius stamping elbow is recommended, Reducing crevice corrosion risk with seamless constructionWithin 10% dilute sulfuric acid such as reducing acid conditions, Select TA9, TA10 Corrosion resistant titanium, High-pressure scenarios with stamping or forging processes.Dilute nitric acid oxidizing acid conditions, TA2 stamping pipe selection can basically meet the use;PTA unit contains bromine ion acetic acid high temperature conditions, TA9 seamless stamping pipe is recommended;Hydrometallurgical nickel-cobalt solution containing chloride ion, TA2 is optional., TA10 Material, Stamping on demand, foundry technologyPharmaceutical food grade clean pipe, Select high purity TA2 stamping pipe fittings, Meet GMP Cleanliness related requirements, Some clean pipes will be matched with polished pipes.Titanium PlateFabricate equipment shells and tube sheets.

Case of landing project, Secondary brine pipeline DN200 specification 1.5D long radius TA10 stamping elbow, Suitable for 60℃ chloride ion saline, 1.0 MPa pressure condition, After replacing the existing short radius TA2 welded elbow, Improved outer arc cracking problem.PTA device oxidation kettle discharge pipeline, TA9 stamping elbow, three links, Large and small head combination pipe fittings, Replace original 316L stainless steel pipe fittings, Reduction of pitting and perforation problems, Reduce frequency of operations.Deep-sea high-pressure hydraulic pipeline adopts integral forging TA2 tee, Rely on weldless construction, Reduce the probability of weld fatigue cracking.

Titanium tubingThere are differences in machining and stainless steel fittings, Focus on three processes in the production process, Titanium material rebound is large, Stamping dies need precise adjustment, 1.5D standard long radius preferredArgon arc welding shall be adopted for welding operation, argon filling protection shall be done on both sides, and argon purity shall be controlled;After welding, vacuum annealing at 550 - 600℃ is carried out to eliminate the stress caused by welding.Finished products need to complete 100% penetration inspection to check surface cracks, After acid pickling passivation, a stable protective film is formed, Control size tolerances, Ensure the sealing effect of pipeline butt joints.

Refer to 2026 Q2 market quotation, domesticTitanium tubingWith cost-effective, the same specifications of products procurement costs about 40% of imported products.DN50‑DN300 interval TA2 stamping pipe prices moderate, TA10, TA9 corrosion resistant material pipe costs have risen, high pressure forging pipe costs.If the batch purchase reaches more than 100 pieces, the corresponding purchase discount can be negotiated to meet the centralized purchase demand of large and medium-sized chemical projects.

Five key points need to be paid attention to in the procurement and processing stage, Control elbow radius parameters when selecting type, 1.0D short radius elbow is not recommended, Select ≥1.5D long radius elbow under normal working condition, High pressure priority 3D radius, Mitigate stress concentration cracking riskCarry out welding argon filling protection and post-weld annealing procedures to reduce weld oxidation and stress corrosion hazards;Control pipe thickness, size tolerance, avoid butt dislocation, insufficient pressure;Complete penetration test report shall be provided for all finished products, and fine surface cracks shall be checked;At the same time pay attention to material and process verification, Avoiding welded fittings acting as seamless stamped fittings, TA2 replaces TA9/TA10 corrosion resistance grade, etc.

Frequently Asked Questions

Titanium tubingStainless steel pipe fittings, In chloride ion, high temperature dilute acid, Better performance in adapting to clean media conditions, Comprehensive operation and maintenance costs are controllable.Standard Elbow Priority Seamless Stamping Process, Selection of welding process for non-standard special-shaped pipe fittings, It is recommended to select weldless forged fittings for high pressure and small diameter pipelines.Titanium tubingpostweld annealing, standard radius parameter, nondestructive testing, It is an important condition to ensure the smooth operation of equipment., It is also the index that needs to be verified for procurement acceptance.

Write at the end:Titanium tubingThe structure seems simple, but it is an important component of stable operation of chemical pipeline system.Selection needs to be combined with pipeline pressure, medium, temperature, pipe diameter, Confirm molding process, Material designation, Structural parameters and test criteria.Taking root in Baoji China Titanium Valley, Shaanxi Tens of Billion Tuoda Technology is deeply cultivatedTitanium non-standard equipmentProcessing, can undertake all categoriesTitanium tubingCustomization, type selection consultation and process optimization, which can meet the requirements of various chemical corrosion conditions.

disclaimer, the proces parameters herein, market range, Project case only as a technical selection reference, Does not constitute a technical commitment and commercial offer.The working conditions of different projects are different, and the actual operation cycle of equipment is affected by the site working conditions and operation and maintenance conditions.Shaanxi Qianyi Tuoda Technology Co., Ltd. reserves the right of final interpretation of this article. Technical consultation: 15909236031 / 0917‑3557966.

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