| Material | Q345D |
| Tolerance | ISO-2678M |
| Roughness | Outer Ra3.2 Inner Ra1.6 |
| Vertical | 0.04/100mm |
| Process | Forging Turning &Milling Machining,Drilling |
| Concentricity | 0.05mm |
| Plating | Anti rust oil |
| Package | Bubble bag or bulk package |
| Test tools | Caliper,Ultrasonic, Three-coordinates measuring,Roughness measing,Gauge |
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no.38 juying road,jiangkou industry zone,fenghua,ningbo china