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Description du produit

Product Description
 1.Tungsten tube features.
 Tungsten metal is lustrous and silvery white in colour, and does not occur naturally (it has an abundance of 1 ppm in the earth's crust). It is found in the ore Wolframite, a tungstate of iron and manganese, (FeMn)WO4, which is converted to the trioxide and then reduced to the metal by reduction in hydrogen (carbon cannot be used as the very stable carbide would result). Tungsten metal is relatively inert, resisting attack by oxygen, acids and alkalis, although it will react with fused, oxidising alkali media. It has the highest melting point of all metals and, when pure, it can be worked with relative ease; however, the presence of impurities renders tungsten extremely brittle and, therefore, difficult to fabricate.

 The high melting point of tungsten makes it suitable for use as electric filaments (e.g. in electric light bulbs). It is also the basis of a range of alloys containing tungsten, copper and nickel which are used for radiation shielding as they provide a 50% increase in density compared to lead. Tungsten and its alloys also find uses in military applications (e.g. armour and shells), as well as counter-balance materials. Tungsten carbide powder (with possible additions of titanium and tantalum carbides) along with nickel or cobalt powders, are compressed and sintered to produce cemented carbides. These products are used in place of high speed steel to form the tip of cutting and drilling tools, or for parts which will be subjected to heavy useage.

Tungsten tube has 99.95% purity and 19.3g/cm3 density . Suitable for rare earth industry and the electronics industry.

 2.Tungsten tube tolerance 

Polished tungsten tube tolerance 

Diameter Diameter Tolerance Length  tolerance  Length Tolerance 
2~6 +/- 0.03 20<L<200 0 , +0.5 >=200 0 , +1
7~30 +/- 0.05 20<L<200 0 , +0.5 >=200 0 , +1
>30 +/- 0.1 >=200 0 , +1
Black surface tungsten tube tolerance 
Diameter Diameter tolerance  Length Tolerance 
2~15 0 , +0.2 0 , +1
16~40 0 , +0.3 0 , +1
>40 0 , +0.5 0 , +1

1.Chemical Compositionp

Grade Tungsten content Content of impurity elements
Total content Each content
W1 ≥99.95% ≤0.05% ≤0.01%
W2 ≥99.92% ≤0.08% ≤0.01%
WAL1,WAL2 ≥99.95% ≤0.05% ≤0.01%
2.Application 
A.Mainly used for high temperature furnace components,crucible,missile rockets nozzle high temperature furnace,ect.
B.It is used for pressing blanks for spinning thin-wall tubes & other special purposes.

Specification

Product Name Pure Tungsten Pipe
Material pure tungsten or tungsten alloy
Color metal color
Model Number W1 W2 WAL1 WAL2                                                            
Thickness 1~30mm
Length 600mm
Packing Wooden Case
Used Aerospace industry, Chemical equipment industry

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