| Material | SAE 1020 SAE 1045 |
| Tolerance | ISO-2678M |
| Process | Welding,Turning Machining,Drilling |
| Plating | Anti rust oil |
| Package | Bubble bag or bulk package |
| Test tools | Caliper,Ultrasonic, Three-coordinates measuring,Roughness measing,Gauge |
+86 574 88073020
no.38 juying road,jiangkou industry zone,fenghua,ningbo china