Carbon steel or stainless steel sterile scalpel handle blade

 Size of  10,11,12,15,20,21,22,23,24,25,26,27,34, 35

Incoming steel material is continuous strip coil. The length of carbon steel material (T10, SK4) is no less than 100m, and the stainlesssteel  is no less than 40m.

Strip steel is annealed. 

The Carbon steel material hardness is 240~330HV10,