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Note 4 - Inventories (Tables)
9 Months Ended
Dec. 31, 2025
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31, 2025

  

March 31, 2025

 

Flat-roll raw material

 $120,293  $85,865 

Flat-roll finished goods

  30,637   15,737 

Tubular raw material

  8,083   7,055 

Tubular finished goods

  10,160   5,032 
  $169,173  $113,689