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Baoji Towin Rare Metals Co.,Ltd
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Smooth Surface Nb Pipes High Melting Point Without Scratch Or Transformation

China Baoji Towin Rare Metals Co.,Ltd certification
We appreciate your nice services and the perfect sputtering targets Towin supplied. We would like to enter into a long term cooperation with Towin Rare Metals.

—— Simon

Reliable factory providing excellent products and services. The specification and quality exceeds ourexpects. Very good, thanks!

—— Bruno Pascal

Very professional team and advanced equipment. Your price is beautiful and the products are perfect. The performance of niobium sheets and plates performs quite well !

—— James Daniel

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Smooth Surface Nb Pipes High Melting Point Without Scratch Or Transformation

Smooth Surface Nb Pipes High Melting Point Without Scratch Or Transformation
Smooth Surface Nb Pipes High Melting Point Without Scratch Or Transformation

Large Image :  Smooth Surface Nb Pipes High Melting Point Without Scratch Or Transformation

Product Details:
Place of Origin: CHINA
Brand Name: TOWIN
Certification: ISO9001
Model Number: RO4200,RO4210
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Standard Exporting Package or Upon Request
Delivery Time: 2-3 weeks
Payment Terms: L/C, T/T,
Detailed Product Description
Purity: 99.95% 3N5 Categories: Seamless Tubing, Welding Tubing
Property: Heat-resistant, Corrosion Resistant, Good Ductility Diameter: Diameter: φ 2.0-100mm
Delivery Time: 2-3weeks Boiling Point: 4742 ℃
Melting Point: 2468 ℃ Manufacturing Standard: ASTM B394
Material: Nb1 Nb2 Technology: Annealing, Cold Rolling, Cold Drawing
High Light:

nb pipes


nb tube

99.95%(3N5) Purity Niobium Tube ,Niobium Seamless Tubing , ASTM B394-98




Purity: 99.95%(3N5)

Surface: niobium tube wall should be smooth, clean, greaseless, without fissure or burr, no no oxidation or hydrogenation, no scratch or transformation

Application: Niobium tube is used for aerospace and aviation industry, structural material for engine, reactor for chemistry, heat exchanger tube, built-in component of reactor and making niobium sputtering target as coating material.




 Metallic impurities, ppm max by weight, Balance – Niobium

Element Fe Mo Ta Ni Si Ti W Zr
RO4200-1 40 50 500 20 40 20 50 200
RO4210-2 100 100 700 50 100 40 200 200


Non-Metallic impurities, ppm max by weight

Element C H O N
RO4200-1 35 12 120 30
RO4210-2 50 15 150 80



Mechanical properties for annealed tube/pipe,

Ultimate Tensile Strength (MPa) 125
Yield strength (0. 2% offset) min, psi (MPa) 59
Elongation(%, 1-in gage length) 25




Niobium is a soft, grey, crystalline, ductile transition metal which has a very high melting point and it is corrosion resistant. Its melting point is 2468℃ and boiling point 4742℃. It is has the largest magnetic penetration than any other elements and it also has superconductive properties, and a low capture cross section for thermal neutrons. These unique physical properties make it useful in super alloys used in the steel, aerospace, shipbuilding, nuclear, electronics, and medical industries.


We produce R04200, R04210 seamless tubes/pipes, welding tubes/pipes, capillary tubes which meet ASTM B 394-98 standard and the sizes can be customized as per your required dimensions. We will do our best to fulfill customers' needs and markets' demands by providing a great variety of customized products. Taking advantages of our high quality niobium oxide raw material, advanced equipment, innovative technology, professional team, we tailored your required products. You may tell us all your requirements and we dedicated in manufacturing upon your needs.


We are trying our best to innovate our techniques, enhance the product quality, increase the product utilization rate, lower down the costs, improve our service to supply our customers’ with higher quality products but lower purchase costs. Once you choose us, you will obtain our stable high quality products, more competitive price than other suppliers and our timely, high efficient services.


Our Strength


  • The founder of Towin Rare Metals and the key technician owns more than 20 years’ experiences in tantalum /niobium and its alloy smelting and deep processing, We are pursuing to provide our customers with the best quality products and most competitive price.
  • We are doing our best to control a good quality and cut down our costs. For example,we have entered a long-term contract cooperation with the Chinese biggest tantalum/niobium hydrometallurgy smelter to assure our stable and high quality raw material.
  • We have purchased the new advanced Vacuum EB furnace to product the high purity niobium ingot for further processing and we also equipped with high vacuum Annealing Furnace, plate and strip rolling mill, High precision surface grinding machine etc. The full and strict quality control system throughout the whole production line from the raw material till the products ready for delivery, we reject the unqualified products timely to make sure only qualified products can be received by our customers.


If you require customization service, you only need to send us your required material, purity, dimension, quantity or a drawing for an inquiry. We will reply you our best quote ASAP.


1) Within fiberboard wooden case or box
2) As per request of the client

1) Shipping products by DHL or UPS or any press designated by the buyer
2) Transport by air
3) Delivery within 20-35days

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