we manufacture pressed steel door frames and window as per is 4351.using c.r.c sheet of 1.25 mm thick including hinges , jamb , lock jamb bead and if required angle threshold of mild steel angle of section 50x25mm, or base ties of 1.25mm pressed mild steel welded conforming to or rigidly fixed together by mechanical means, adjustable lugs with split end tail to each jamb including steel butt hinges 2.5mm thick, lock