- Model NO.: screw elements
- Trademark: Zhongyang
- Origin: Zhoushan, China
- Screw Elements: Segment Screw
- Specification: ISO9001: 2008 approved
- HS Code: 84779000
Specification:
Parallel twin screw diameter: Φ 18-Φ 177mm
Material:
1)W6Mo5Cr4V2
2)38CrMoAlA(JIS SACM645)
3)42CrMo(AIS14140)
4)S45C
Technics:
1)Heat treatment
2)Nitriding treatment
3)Vacuum quenching
Technical parameter:
D/d ratio: 1.55
Nitrided layer depth: >=0.4mm
Nitrided hardness: 900-1000HV
Terms and Conditions:
Production time: 25 days
Packing: Export standard(as customers' requests)
Trade Terms: FOB, CNF, CIF or DHL, TNT
Payment Terms: T/T, L/C
Warranty and service: 1 year
Our advantages:
1)Excellent raw materials
2)Good customer services and technical services
3)Competitive pricing
4)Rigorous quality inspection
5)On time delivery
Experienced manufacturer, we will be the best choice.
Screw Alignment | 0.015mm |
Nitride Brittleness | ≤Grade 1 |
Depth of Nitride Layer | 0.5~0.8mm |
Hardness of Nitride | HV1000~1100 |
Quenching and Tempering Hardness |  HB240-280 |
Surface Roughness |  0.045mm |
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Hebei Huichao Machinery Parts CO., Ltd. , https://www.huichaoagparts.com