- I.Q.C (INCOMING QUALITY CONTROL)
- Outlook
- Size Inspection
- Tensile Test
- Hardness Test
- I.P.Q.C (IN-PROCESS QUALITY CONTROL)
- Before and After Mass Production Inspection
- Outlook
- Full Size Inspection
- BIT Test
- Gage Test
- F.Q.C (FINISH QUALITY CONTROL)
- Outlook
- Full-size Inspection
- BIT Test
- Gage Test
- O.Q.C (OUT-GOING QUALITY CONTROL)
- Outlook
- Full-size Inspection
- Torque Test
- Drilling Test
- Hardness Test
- Rusting Test (According to surface treatment requirement)
- BIT Test
- Gage Test
- Ductility Test
- Straightness Test