China Pure Niobium Tubes - R04200 Grade Supplier and Factory for High-Temperature and Corrosion-Resistant Applications
Product specification
📐 Product Specifications
| 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 |
⭐ Key Advantages
🔬
Ultra-Precision Tolerances
Outer diameter tolerance as tight as ±0.002mm, meeting the most demanding high-end equipment assembly requirements and ASTM B394 standards.
📏
Wide Dimensional Range
Outer diameters from 0.5mm to 200mm and wall thicknesses from 0.1mm to 20mm, covering both precision thin tubes and heavy-duty standard tubes.
✂️
Custom Length Cutting
Supports fixed-length cutting with maximum single-piece length up to 8000mm, fully customizable to your project specifications.
✨
Superior Surface Finish
Polished inner/outer surfaces achieving Ra≤0.2μm for precision thin tubes, ensuring smooth fluid transportation and excellent corrosion resistance.
⚙️
Full Customization Support
Every parameter — diameter, wall thickness, length, tolerance, and surface roughness — is customizable on demand for your specific application.
🏅
ASTM B394 Compliant
All products comply with ASTM B394 international standards, ensuring consistent quality and reliability for industrial and precision applications.
📊 Specification Comparison
| Parameter | Precision Thin Tubes | Standard / Thick Tubes |
| Outer Diameter | 1.0mm — 10mm | 10mm — 150mm |
| Wall Thickness | 0.2mm — 1.0mm | 1.0mm — 10mm |
| OD Tolerance | ±0.002mm — ±0.01mm | ±0.01mm — ±0.1mm |
| WT Tolerance | ±0.001mm — ±0.005mm | ±0.005mm — ±0.05mm |
| Surface (Polished) | Ra ≤ 0.2μm | Ra ≤ 0.4μm |
| Surface (Bright Annealed) | Ra ≤ 0.8μm | Ra ≤ 1.0μm |
| Standard Length | 1000mm — 5000mm | 500mm — 6000mm |
💬 Frequently Asked Questions
❓
What is the minimum outer diameter available for precision thin tubes?
The standard range for precision thin tubes starts at 1.0mm outer diameter. However, through our customization service, outer diameters as small as 0.5mm can be produced to meet specific application requirements.
❓
What tolerance standards do your tubes comply with?
All tubes are manufactured in compliance with the ASTM B394 international standard. Precision thin tubes achieve outer diameter tolerances of ±0.002mm to ±0.01mm, and wall thickness tolerances of ±0.001mm to ±0.005mm.
❓
Can tubes be ordered in custom lengths?
Yes. Custom lengths are fully supported. The maximum single-piece length available is 8000mm, and fixed-length cutting services are offered to match your exact project specifications.
❓
What surface finish options are available?
Two main surface finishes are available: inner/outer polished surface (Ra≤0.2μm for precision thin tubes; Ra≤0.4μm for standard tubes) and bright annealed surface (Ra≤0.8μm for precision thin tubes; Ra≤1.0μm for standard tubes). Custom roughness levels can also be arranged on demand.
❓
Are custom wall thickness specifications available for thin-walled tubes?
Absolutely. Wall thickness can be customized from as thin as 0.1mm up to 20mm. Precision thin-walled tubes with very tight tolerances are available to support high-end equipment assembly and fluid system applications.
❓
What is the difference between precision thin tubes and standard/thick tubes?
Precision thin tubes (OD: 1.0mm–10mm, WT: 0.2mm–1.0mm) are engineered for applications demanding extremely tight tolerances and ultra-smooth surfaces. Standard/thick tubes (OD: 10mm–150mm, WT: 1.0mm–10mm) are suited for general industrial and structural applications where broader tolerances are acceptable.
Classification
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Classification by Product Form
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Classification by Material Performance
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Classification by Machining Precision
Specification Selection Guide & Chemical Composition Standards
|
Product Type |
Specifications |
Core Features |
Application Scenarios |
|
Ultra-Thin Metal Discs |
Thickness starting from 0.03mm, diameter 2–50mm |
Ultra-thin & flexible, ultra-high precision, burr-free, excellent conductivity |
Semiconductor chip accessories, micro electronic contacts, precision sensors, miniature medical devices |
|
Conventional Metal Discs |
Thickness 0.1–2mm, diameter 50–100mm |
High structural strength, good flatness, superior batch consistency |
High-end tooling fixtures, equipment sealing gaskets, conductive connectors, aerospace precision components |
|
Standard Metal Cups |
Thickness 0.076–0.254mm, flat/spherical/conical shape |
High pressure & deformation resistance, high fitting accuracy, wear resistance & durability |
Supporting for diamond wire drawing molds, PCD/PCBN super-hard cutting tools |
|
Custom Special-Shaped Metal Cups |
Non-standard thickness & special-shaped full-size customization |
Custom-fit design, high fitting precision, stable performance under extreme conditions |
Deep oil & gas well drilling, special super-hard material processing, new material R&D |
|
Material |
Substrate Purity |
Total Impurity Content |
Core Standard |
|
Molybdenum / Tantalum |
≥99.95% |
≤0.05% |
High temperature resistance, low impurity, high vacuum compatibility |
|
Zirconium / Niobium |
≥99.9% |
≤0.1% |
Superior corrosion resistance, high pressure resistance, erosion resistance |
|
Titanium / Nickel |
≥99.5% |
≤0.5% |
Lightweight, biocompatible, stable conductivity |
01
Ultra-High Purity & Zero Contamination
All refractory metal substrates reach purity ≥99.9% with extremely low impurity content. No contamination occurs during processing, ensuring no impact on the accuracy and performance of high-end products, fully adapting to high-purity precision manufacturing processes.
02
Extreme & Controllable Dimensional Accuracy
Adopting precision stamping technology, the core dimensional tolerance is strictly controlled within ±0.001mm. Products feature high flatness, no deformation and no burrs with excellent assembly fitting performance, meeting the precision assembly requirements of micro-precision components.
03
Wide Adaptability for High-Temperature & High-Pressure Extreme Conditions
Refractory metal substrates possess excellent high-temperature resistance, withstanding temperatures up to 2600℃. Combined with outstanding high-pressure and anti-deformation capabilities, they operate stably in extreme scenarios such as deep well drilling, ultra-high temperature sintering and high-strength processing.
04
Superior Corrosion & Wear Resistance with Long Service Life
Maintaining stable performance under acid-base corrosion, high-temperature oxidation and high-speed scouring environments, the products feature anti-aging and wear-resistant properties, effectively reducing accessory replacement frequency and lowering production costs.
05
Stable Electrical & Thermal Conductivity
Metal substrates deliver excellent and uniform heat and electrical conduction without local overheating or unstable resistance, perfectly suitable for semiconductor and power conduction precision components.
06
Flexible Customization & Strong Adaptability
Supporting full-dimensional customization of thickness, size and shape. Standard specifications are sufficiently in stock, and special-shaped products support rapid die opening to accurately match non-standard equipment and special process requirements.
07
Excellent Batch Consistency
Equipped with automated precision production lines and standardized molds, products maintain highly unified size and performance, ideal for large-scale industrial supporting production.
Production Process
- Refractory metal raw material inspection → precision plate leveling → CNC cutting & blanking → integral precision stamping via standardized molds → high-precision dimension calibration → edge deburring & polishing → surface precision cleaning → triple inspection (material purity, dimensional tolerance, appearance defect) → sorting & classification → finished product packaging → delivery with complete test reports
01
Petroleum & Gas Drilling Industry
Custom high-purity metal cups matched for polycrystalline diamond compacts feature high pressure resistance, corrosion resistance and erosion resistance. They adapt to extreme deep and ultra-deep well drilling conditions, improving the stability and service life of drilling equipment.
02
Super-Hard Tool & Mold Industry
Supporting stamping parts for PCD inserts, PCBN inserts, diamond cutters, CBN tools and diamond wire drawing molds enhance tool clamping stability, machining accuracy and wear resistance.
03
Electronics & Semiconductor Industry
Precision metal discs are applied in chip packaging, electronic contacts, semiconductor equipment tooling and sensor induction components. High purity and conductivity ensure long-term stable operation of electronic devices.
04
Aerospace Industry
Suitable for aerospace precision instrument components, special sensor parts and aerospace tooling accessories. Lightweight, high-strength and high-temperature resistant properties meet extreme environmental requirements of aerospace equipment.
05
Medical Device Industry
Titanium and high-purity nickel stamped parts are used for minimally invasive device accessories and medical testing equipment components. Featuring good biocompatibility, high precision, non-magnetic and pollution-free performance, they fully comply with medical safety standards.
06
High-End Precision Manufacturing Industry
Applicable for precision mold accessories, special tooling fixtures, new energy equipment conductive parts and new material R&D consumables, providing core precision support for high-end precision equipment and special industrial processes.
Enterprise Advantages & Services
- Baoji Yunjie Metal has specialized in refractory metal precision manufacturing for over 30 years, owning mature precision stamping core technologies and multiple technical patents with ISO9001 quality system certification. We feature full material coverage, ultra-high precision, rapid die opening, stable delivery and superior quality. Standard products are in stock for immediate shipment, customized orders support quick response, small-batch trial production and large-scale stable mass production. All products undergo strict triple quality inspection on material purity, dimensional accuracy and appearance performance, maintaining a leading customer repurchase rate in the industry.
- Free Services: Material selection consultation, size specification optimization, special-shaped structure design, sample testing, exclusive batch customization solutions.
Send Inquiry
As a professional expert providing solutions for pure tantalum (R05200, complying with ASTM B708 American Standard) and various metal accessories and custom machined parts, Baoji Yunjie focuses on precision machining-to-drawing capability, fully meeting customers' machining needs from standard parts to complex custom parts! For a full range of metal materials and products such as titanium, tantalum, niobium and zirconium, welcome to provide drawings for consultation and customization. We will accurately reproduce designs and deliver products efficiently.