The exterior casing of the Unit is constructed from mild steel plate ( IS 2062 GR.) and supported with angles and channels internally and externally.

Doors :
All the doors are made from mild steel ( IS 2062 GR.) and are lined with high grade castable cement.

Internal Lining :
Inside portion of the unit lined with high alumina refractory bricks backed up by cold & hot face Insulation material as per IS 2042 grade.