STEP 1.raw material

1.raw material

STEP 2.sawing

2.sawing

STEP 3.forging

3.Forging

STEP 4.rough processing

4.rough processing

STEP 5.heat treatment

5.heat treatment

STEP 6.surface precise grinding

6.surface precise grinding

STEP 7.circular grinding

circular sharping

STEP 8.testing

9.testing