| spare parts type | screw barrel | material | Metal |
| machinery test report | Provided | video outgoing-inspection | Provided |
| key selling points | Long Service Life | Weight (KG) | 10000 |
| Screw name | Nitrided screw barrel | Characteristics | WEAR RESISTANCE AND ANTI-CORROSION |
| Based material | 38Crmoala | depth of nitration | 0.5-0.8mm |
| hardness of nitration | 950-1020Hv | roughness of surface | Ra 0.4um |
| Fragility of nitration | less than grade 1 | Linearity of screw | 0.015mm |
| bimetallic layer thickness | 2-3mm | hardness of bimetallic | HRC58-62 |