Oxygen is used in the manufacture of metals like steel, copper and zinc. Chlorine is used in the manufacture of Aluminium. These gases react with the undesirable impurities and form their respective oxide or chlorides. These oxides or chlorides then float to the surface of the molten metal and are removed.
To transfer these gases to the molten metal, a pipe is needed. This pipe is the lancing pipe and the process of injecting gases into molten metal is known as lancing.
Traditionally an ordinary pipe has been used. The material of construction is low carbon steel (Mild Steel), electrically resistance welded (ERW) in the shape of a pipe. Since the molten is steel or copper or zinc, and the pipe is of mild steel, the pipe melts into molten metal, at the end which is dipped into it. Besides because of high temperature of the molten metal, the pipe also gets oxidized and melts faster into the molten metal. Hence the pipe gets consumed and has to be replaced.
The following sizes are available when it comes to lancing tubes.
|5.0mm||1.0mm||1.2 or 3||Plain|
|6.0mm||1.0mm||1.2 or 3||Plain|
|8.0mm||1.0mm||5.5 or 6||Plain|
|10.0mm||1.0mm||5.5 or 6||Plain|
|12.0mm||1.5mm||5.5 or 6||Threaded|
|13.2mm||1.8mm||5.5 or 6||Threaded|
|17.2mm||1.8mm||5.5 or 6||Threaded|
|21.3mm||2.0mm||5.5 or 6||Threaded|