Mobile/WhatsApp: +86-138-0121-3978 
  • twitter
  • facebook
  • linkedin
Precision Refractory Metal Materials & Custom Components Manufacturer
English
English Chinese Simplified French German Portuguese Spanish Russian Japanese Korean Arabic Turkish Italian Indonesian Polish Hindi Dutch Malay Persian Thai Vietnamese
Leave Your Message
High-Quality Pure Niobium Tubes (1).png
High-Quality Pure Niobium Tubes (3).png
High-Quality Pure Niobium Tubes (4).png
High-Quality Pure Niobium Tubes (2).png

Pure Niobium Tubes: Specialized

Pure niobium tubes of R04200 grade are seamless tube products manufactured from high-purity commercially pure niobium (Nb content ≥ 99.95%, complying with ASTM R04200) through multiple precision processes including vacuum melting, hot rolling billet making, cold rolling/cold drawing forming, and annealing. According to specifications, they can be divided into precision thin tubes (outer diameter ≤ 10mm), standard tubes (outer diameter 10-50mm), and thick tubes (outer diameter 50-150mm). They are mainly used in scenarios such as high-temperature medium transportation, chemical corrosion-resistant pipelines, aerospace fluid components, laboratory precision reaction tubes, and superconducting equipment conduits. As a core category of high-purity niobium-based tubes, it possesses outstanding high-temperature stability (capable of long-term stable operation below 1200℃ and short-term resistance to 1600℃), excellent corrosion resistance (strong tolerance to most acids, alkalis, molten salts, and high-temperature gases, excluding hydrofluoric acid), as well as ultra-pure impurity-free properties, uniform wall thickness, and stable mechanical properties. These characteristics make it a key material in fields requiring extremely high tube purity, sealing performance, and environmental resistance, especially suitable for high-precision fluid transportation and structural applications under extreme working conditions.

    Contact us

    Product specification

    Product Parameters
    Product Information

    Item

    Regular Specifications (Precision Thin Tubes)

    Regular Specifications (Standard/Thick Tubes)

    Customization Range

    Outer Diameter

    1.0mm—10mm

    10mm—150mm

    0.5mm—200mm, customizable per customer requirements

    Wall Thickness

    0.2mm—1.0mm

    1.0mm—10mm

    0.1mm—20mm, precision thin-walled tubes customizable

    Length

    1000mm—5000mm (single piece)

    500mm—6000mm (single piece)

    Customizable on demand (maximum length up to 8000mm, supporting fixed-length cutting)

    Tolerance Range

    Outer diameter tolerance: ±0.002mm—±0.01mm; Wall thickness tolerance: ±0.001mm—±0.005mm (compliant with ASTM B394 standard)

    Outer diameter tolerance: ±0.01mm—±0.1mm; Wall thickness tolerance: ±0.005mm—±0.05mm (compliant with ASTM B394 standard)

    Precision-grade tolerance customizable to meet high-end equipment assembly requirements

    Surface Roughness

    Inner/Outer polished surface: Ra≤0.2μm; Bright annealed surface: Ra≤0.8μm

    Inner/Outer polished surface: Ra≤0.4μm; Bright annealed surface: Ra≤1.0μm

    Inner and outer roughness customizable on demand to ensure smooth fluid transportation
    Product Name  Pure Niobium Tubes, Precision Seamless Pure Niobium Tubes
    Brand Name  Yunjie
    Model  R04200 (ASTM Standard)
    Material  High-Purity Niobium (Commercially pure niobium, complying with ASTM R04200 grade)
    Processes  Vacuum Melting, Forging, Hot Rolling Billet Making, Cold Rolling/Cold Drawing Forming, Annealing, Finishing, Surface Treatment, Cutting
    Minimum Niobium Content  Meets high-purity standards (Nb content ≥ 99.95%)
    Density  8.57g/cm³
    Advantages  Excellent high-temperature stability, superior corrosion resistance, good electrical and thermal conductivity, ultra-pure material, uniform wall thickness, high dimensional accuracy, fine surface finish
    Surface Conditions  Pickled Surface, Bright Annealed Surface, Cold Rolled/Cold Drawn Surface, Polished Surface
    Delivery Conditions  Soft State (M), Hard State (Y)
    Processing Services  Customized dimensions (outer diameter, inner diameter, wall thickness, length), cutting, welding, necking/flaring, thread processing, precision polishing
    Minimum Order Quantity  1kg (Calculated based on actual orders; preferential terms available for bulk purchases)

    Classification

    High-Quality Pure Niobium Tubes (2)
    • Classification by Specification & Dimension
    • Classification by Processing State
      •Soft State (M) Pure Niobium Tubes: Fully annealed to completely eliminate internal stress, with excellent ductility and plasticity. Facilitates complex forming processes such as bending, necking, flaring, and deep processing, suitable for precision pipeline components requiring secondary fine processing.
      •Hard State (Y) Pure Niobium Tubes: Cold-rolled/cold-drawn without annealing, featuring high strength, hardness, extremely high dimensional accuracy, and strong structural stability. Suitable for high-pressure, high-temperature pipeline scenarios with strict requirements on strength, rigidity, and dimensional stability.
      •Semi-Hard State (Y2) Pure Niobium Tubes: Incompletely annealed to balance strength and ductility, with certain rigidity and plasticity. Suitable for fluid transportation and connector scenarios under medium pressure and normal temperature conditions.
    • Classification by Surface Treatment Method

    Specification Selection Table and Composition Table

    Pure Niobium Crucible Specification Selection Table
    Chemical Composition Table

    Product Type

    Specification Range

    Core Features

    Application Scenarios

    Laboratory-Grade Precision Pure Niobium Thin Tubes

    Outer diameter: 1.0-5mm; Wall thickness: 0.2-0.5mm; Length: 100-5000mm (single piece)

    Ultra-pure material (Nb≥99.95%), minimal dimensional tolerance, uniform wall thickness, smooth inner/outer surfaces, good sealing performance

    Laboratory precision reaction tubes, micro-sensor conduits, superconducting experimental thin conduits, university research projects

    Industrial-Grade Universal Pure Niobium Tubes

    Outer diameter: 5-50mm; Wall thickness: 0.5-5mm; Length: 1000-6000mm (single piece)

    High dimensional accuracy, clean surface, excellent corrosion resistance, stable processing performance, available for bulk supply

    Chemical corrosion-resistant pipelines, high-temperature medium transportation tubes, medical device fluid tubes, general precision equipment pipelines

    Industrial-Grade Heavy-Duty Pure Niobium Tubes

    Outer diameter: 50-150mm; Wall thickness: 5-15mm; Length: 500-8000mm (single piece)

    High structural strength, stable high-temperature performance, good weldability, excellent sealing performance

    Large-scale chemical reactor pipelines, aerospace fluid components, high-temperature and high-pressure transportation tubes, large-scale experimental devices

    Customized Pure Niobium Tubes

    Customized per customer drawings (outer diameter, inner diameter, wall thickness, length, surface roughness, processing state)

    Strong adaptability, performance optimized on demand, high personalization, strict matching with customer equipment and process requirements

    Special-specification high-temperature pipelines, customized chemical equipment accessories, high-end equipment precision fluid components, specialized experimental devices

    Grade

    Nb

    Impurity Content, Max. (≤)

    Fe

    Si

    Ni

    C

    N

    O

    H

    Zr

    Nb1

    ≥99.95

    0.005

    0.005

    0.005

    0.01

    0.01

    0.015

    0.0015

    0.02

    Cr

    Ta

    Mo

    W

    Ti

    Co

    Al

    　

    0.002

    0.1

    0.01

    0.03

    0.02

    0.002

    0.002

    　

    Characteristics

    01
    Excellent High-Temperature Stability
    Pure niobium has a melting point of up to 2468℃, enabling long-term stable operation below 1200℃ and short-term resistance to 1600℃. It maintains good mechanical properties, sealing performance, and structural stability in high-temperature environments, suitable for medium-high temperature and extreme high-temperature fluid transportation working conditions.
    advantage-2
    02
    Superior Corrosion Resistance
    Exhibits strong stability in harsh environments such as strong acids (excluding hydrofluoric acid), alkalis, molten salts, and high-temperature oxidizing atmospheres. The dense oxide film formed on the surface can effectively resist corrosion without contaminating the transported medium, especially suitable for fluid pipeline applications in strong corrosive environments.
    advantage-2
    03
    Ultra-Pure Impurity-Free Material
    Complies with high-purity Nb1 grade standards, with Nb content ≥ 99.95% and extremely low levels of various impurities. No harmful impurities precipitate, and it does not chemically react with the transported medium, ensuring safe and stable transportation processes, suitable for harsh scenarios such as high-precision electronics, superconductivity, and laboratories.
    advantage-2
    04
    Outstanding Processing and Forming Performance
    Excellent ductility allows precision cold rolling/cold drawing processing with good wall thickness uniformity. It can complete various secondary processes such as bending, necking, flaring, and welding, meeting the preparation requirements of precision pipelines of different shapes and specifications.
    advantage-2
    05
    High-Precision Dimensional Control
    Through precision billet making, cold rolling/cold drawing, and finishing processes, it achieves minimal outer diameter and wall thickness tolerances, low roundness error, high inner/outer surface flatness, and good dimensional consistency, which can accurately match the assembly requirements of high-end equipment and ensure the sealing performance of pipeline connections.
    advantage-2
    06
    Good Electrical and Thermal Conductivity
    High-purity material ensures excellent electrical and thermal conductivity. In scenarios such as high-temperature pipelines and superconducting conduits, it can effectively balance temperature distribution, reduce energy loss, and improve equipment operation efficiency and safety.
    advantage-2

    Production Process

    1. Raw Material Preparation: Niobium ore undergoes mineral processing, enrichment, reduction, and other processes to extract high-purity sponge niobium, which is then refined through multiple vacuum arc furnace meltings to produce niobium ingots meeting high-purity Nb1 grade and ASTM R04200 standards (Nb content ≥ 99.95%, uniform composition, extremely low impurity content).
    2. Forging/Hot Rolling Billet Making: Niobium ingots are heated to a specific temperature and then forged or hot-rolled into solid round billets, eliminating internal defects of the ingot, refining grain structure, improving material density and mechanical properties, and laying the foundation for subsequent tube making.
    3. Cold Rolling/Cold Drawing Tube Making: Solid billets are made into hollow tube blanks through piercing process, then subjected to multiple passes of cold rolling/cold drawing processing. The processing volume of each pass is precisely controlled to gradually adjust the outer diameter and wall thickness to close to the finished product specifications, ensuring dimensional accuracy, roundness, and wall thickness uniformity.
    4. Intermediate Annealing: Intermediate annealing is inserted during the cold rolling/cold drawing process to eliminate processing internal stress, restore material plasticity and toughness, and avoid cracking, deformation, uneven wall thickness, and other problems in subsequent processing.
    High-Quality Pure Niobium Tubes (1)
    High-Quality Pure Niobium Tubes (4)

    Production Process

    1. Finished Product Annealing: According to the processing state (soft state, hard state) required by customers, the cold-rolled/cold-drawn pure niobium tubes undergo finished product annealing treatment, with precise control of annealing temperature, holding time, and cooling rate to ensure that material properties and dimensional stability meet standards.
    2. Surface Treatment: The annealed pure niobium tubes undergo inner and outer surface treatment, optional pickling (to remove oxide scale), bright annealing (to improve surface finish), or polishing (to achieve a high mirror effect), ensuring surface quality, corrosion resistance, and smooth fluid transportation.
    3. Finishing & Inspection: The finished products are trimmed, cut, and straightened to meet customer size and shape requirements; subsequent rigorous inspections include composition re-testing (precise control of impurity content), dimensional accuracy testing, surface quality testing, mechanical property and sealing performance testing, etc. This ensures that product quality meets the requirements of high-purity Nb1 grade, ASTM R04200, and ASTM B394 standards, accompanied by material inspection reports and quality certificates.

    Application Fields

    01
    Electronic Industry
    Superconducting equipment conduits, cooling tubes for high-temperature electronic components, semiconductor device transportation pipelines, precision instrument fluid tubes. Relying on high purity, high conductivity, and high-temperature stability, it ensures the stable and efficient operation of electronic devices in extreme environments.
    6511419c2763338526
    02
    Chemical Industry
    Strong corrosive medium transportation tubes, chemical reactor pipelines, fluid tubes for precision chemical instruments, acid-base solution transportation pipelines. Utilizes excellent corrosion resistance to extend pipeline service life, avoid medium contamination, and improve production safety and reliability.
    6511419c2763338526
    03
    Laboratory Research
    Precision reaction tubes, pipelines for high-temperature micro-reaction vessels, superconducting experimental conduits, transportation tubes for special material R&D. Ultra-pure material without impurity contamination ensures experimental precision, data accuracy, and experimental process stability.
    6511419c2763338526
    04
    Aerospace
    High-temperature fluid pipelines for spacecraft, precision conduits for aviation instruments, auxiliary pipelines for spacecraft thermal protection systems. Combines high strength, extreme environmental tolerance, and sealing performance to meet the harsh working condition requirements of the aerospace field.
    6511419c2763338526
    05
    Medical Devices
    High-precision fluid transportation tubes, special conduits for minimally invasive surgery, biocompatible pipeline components. Resistant to corrosion by biological fluids, safe and non-toxic material, compliant with medical device hygiene standards, suitable for high-precision fluid transportation requirements in the medical field.
    6511419c2763338526
    06
    New Energy Field
    High-temperature fuel cell pipelines, fluid tubes for hydrogen-related equipment, superconducting energy storage material conduits, precision pipelines for photovoltaic equipment. Meets the purity, conductivity, and corrosion resistance requirements of new energy materials, improving the performance, efficiency, and safety of energy equipment.
    6511419c2763338526

    Send Inquiry

    As a professional provider of high-purity pure niobium (Nb1/R04200, compliant with ASTM B394 standard) and comprehensive solutions for various metal tubes, rods/wires, plates/sheets, foils/strips, and crucibles, Baoji Yunjie is ready to serve you at any time! For a full range of metal materials and products such as titanium, niobium, zirconium, nickel, aluminum, tantalum, tungsten, and cobalt, please feel free to contact us!