Accurate controlling of the hardness and Ta, W, Nb chemical composition on Tubes and Pipes

Posted by Super User

Tantalum and Niobium are heat-tolerant refratory metals with excellent corrosion resistance. The tubes and pipes made by Ta and Nb can be used in following areas.   

1. Pipeline to deliver liquid, solid granule and so on.

2. Heat exchanger, such as boiler tube, tube for chemical engineering.     

3. Pipe for petroleum geology.     

4. Mechanical tube.

5. Cable tube, tube for high pressure vessel.     

6. Tantalum Rings.    

7. Medical Tubes     

8. And so on


Changsha South Tantalum Niobium Co., Ltd is good at producing Seamless Tubes and Pipes with Outer Diameter 1.5~150mm, Wall Thickness 0.2~10mm, Length 5~12000mm. The deviations of Wall Thickness is within +/-10%, or even better at +/-5%. All tubes and pipes 100% meet with the requirement of ASTM B521 with certificate EN10204/3.1. Moreover, our Seamless Tubes and Pipes production line is flexible in manufacturing different size, from capilary tubes to large-diameter pipe regardless of small or large quantity with uniform property on each part.  


Equiped with full set of testing instrument, Changsha South Tantalum Niobium Company Co. Ltd is able to conduct the inspection and testing by himself as per ASTM Standard and GB/T Chinese Standard. For tubes and pipes, we have Ultrasonic Successive Thickness Measuring System to measure wall thickness, Eddy Current Flaw Dector to detect the defects and cracks in the inner of products like tubes and pipes, and Hydrostatic Test Equipment to detect the defects and cracks in the inner of tubes and pipes. To a certain of customers who have special requirement on Ta, W, Nb chemical composition, we have element detector to analyze the weight of each chemical composition, especially for Ta, Nb and W(Tungsten). Which is helpful for us to control the percentage of each chemical element from the raw material to the finished products, so that eligible products are delivered to our customer with good satisfaction. It is well known that the Tantalum weight on Niobium is very hard to control, with this detector, we can improve our configuration, ingot melting and so on to have suitable Ta weight. Hardness is a comprehensive index of mechanical properties such as elasticity, plasticity, strength and toughness of materials. To better control of the hardness of the tubes and pipes, we use Vicker Hardometer during our production and testing. Our great capability of controlling hardness and chemical composition have won more and more customers' orders for Tubes and Pipes.

In future, Tantalum and Niobium Metals will be used in more and more areas because of the property of premium heat-tolerance, excellent corrosion-resistance and easy processing. especially for Chemical Industry, Ta and Nb is more environmental friendly.