Currently the factory of seamless tantalum tube can only produce and anneal the seamless tantalum tube which the longest length is about 6 meters,if exceeding this length,it is difficult to for them guarantee the uniformity of the thickness and it's also hard to get it annealed,Thus affect its use scope.Then the alternate method come out which is the welding tube,but the sealing performance and service life of this kind of welding tube is far from the seamless tube ,With the development of spaceflight, aviation, military, chemical industry and so on the needs of super long seamless tantalum tube rapid increase.

Changsha South tantalum and niobium Co.,LTD is the only company which can produce the 12-meters long annealed seamless tube in China. According to the the years of producing experience,CSNFTN find a number of production technology of seamless tube which obtain the patent from the government.

We developed a set of new technology from doping, sintering, and rolling for the super long tantalum tube ,also developed the annealing furnace for long tube (This technology has been the national invention patent and utility model patent)

Also we strictly control the tolerance of the wall thickness when rolling,our tolerance of dimensional is much better than the USA military for tube.

Other product: tantalum plate