Screw and Barrel
Cissco Trading Co., Ltd. [China] 
Minimum Order: 0
Quality/Safety Certification: 0.00
1.38 CrMoALA Material
2.Nitriding Depth:0.5~0.7mm
3.High Quliaty, precision and rigidity
1. We can manufacture all types of screws and barrels according to clients' requirement.
size:
screw diameter:Φ20-Φ500mmMaximum screw length:10000mmBarrel inner bore diameter:Φ500mm2.Technology:nitriding treatment ,alloy coating spraying, heat-treatment applied
3. Technical parameter:
| Material | 38CrMoAIA,42CrMo,alloy powder |
| Nitride depth | 0.7mm |
| Surface hardness | HV950 - HV1,020 |
| Fragility of nitrition | less than grade 1 |
| Screw straight tolerance | 0.015 mm/m |
| Surface roughness | Ra 0.4μm |
| Linearity of the screw | 0.015mm |
| Depth of double alloys | > 2ram |
| Bimetallic layer depth | 3mm |
