Circular knives should be perfectly round. It means that the distances from the center of knife to the edges must be same. It helps tools with high performance without trembling and guarantees long products life. Mainly, the material is SKH-9(hardness 62~65), SKD-11(Hardness 55~61), SUS-420 J2(hardness 52~58) and the usage is for cutting tape, rubber belt,fiber, soft PVC, copper film, steel sheet, paper etc.

   (mm),  *Other special sizes and shapes are manufactured by customer's drawings.

ISO 9002

1) Standard size: After confiming the stock, available right away.
2) Special size and shape: supplyng by the customer's drawings or samples.
3) Drawing sending: The files should be dwg or dxf of Auto CAD throgh the E-mail( dwg@kumha.co.kr)  
                              Fax : +82-2-465-6332
4) Payment: Irrevocable L/C or T/T in advance.
5) Minimum quantity : 1 pc
6) Quotation : Ater receiving description or the drawings or samples, within 24hours.