Generally large furnaces are non Tilting in Type and use bottom pouring methad to take out the Molten Metal through the Tap Hole. When the Tap hole needs to be opened the same is done with the help of a High Frequency Induction Welded Low Carbon Mild Steel Tube which can sustain 750 PSI Pressure without leaking of Suitable Size 8mm NB, 15 mm NB or even 25 mm NB in certain Cases. Oxgen at high pressure is injected through these tubes into the Tap Hole and the molten metal starts flowing. Depending on the type of Ferro alloy or Steel Plant or Copper or Zinc Smelter the Consumption of the Pipe is determined. This lance pipes are basically used to open the Tap holes of Bottom Pouring Furnaces.