louver punch

Louver and Bridge Pieces for Air Conditioner Fin Dies
1.Material:SKH 51,Hardness: HRC61-64
2.Material:CPM10V,Hardness: HRC62-64
3.Material:HAP40, Hardness: HRC64-67
The unilateral fit clerance of the louver punching die and bridge piece punch die is 0.008-0.01mm