Manhar Metal selects high quality metal powder and technologic sintered in the hydrogen to produce tungsten  pipe and other tungsten product s. Tungsten pipe is high purity and machinable. The crystal structure of tungsten tube is compact. 

Properties 
1. menchanical properties:
Hardness Hv>450
Density d>19.2g/cm3

2. microstructure(vertical section)
The fibred structure
The initial recrystallization temperature 1200--1250℃

Applications :

Used as the stell-making additive
For producing tungsten targets
For producing ion implantation parts
For rolling tungsten foil and punching tungsten discs
For producing electric light source parts and electric vacuum components
For producing heating elements and refractors in high temperature furnaces
For producing W-boats, and heating units in high temperature furnaces