| After-sales Service: | 24hours Within 7days |
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| Warranty: | 3-12months |
| Certification: | ISO |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier | Product | Screw&Barrel |
| Tempering hardness | HB240-280 |
| Hardness of nitrogen treatment | HV950-1000 |
| Depth of nitrogen layer | 0.55-0.70 |
| Nitride brittleness | Less than grade 1 |
| Surface roughness | Ra 0.4 |
| Screw straightness | 0.015mm |
| Hardness after nitride | ≥900HV |
| Chromium-plating depth | 0.05-0.10mm |
| Alloy hardness | HRC55-62 |
| Alloy Depth | 1.5-2.0mm |
Suppliers with verified business licenses
Audited Supplier 
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