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Note 4 - Inventories (Tables)
6 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30, 2025

  

March 31, 2025

 

Flat-Roll raw material

 $110,125  $85,865 

Flat-Roll finished goods

  30,614   15,737 

Tubular raw material

  11,164   7,055 

Tubular finished goods

  9,663   5,032 
  $161,566  $113,689