Nanjing Zhitian Mechanical And Electrical Co., Ltd.
| Payment Terms | T/T,L/C |
| Supply Ability | 500 Sets / Month |
| Delivery Time | 10-60 Days |
| Packaging Details | Anti-corrosion film + Shockproof foam + Wooden crate |
| Material | As Request |
| Heat Treatment | As Request |
| Surface Treatment | Sand Blasting/ Polishing |
| Service Provided | Video Technical Support |
| Warranty | 6 Months |
| Hardness | HRC 58- 64 As General |
| Standards | DIN, GB, Etc. |
| Technics | CNC Machining |
| Brand Name | zhitian |
| Model Number | Customizable |
| Certification | iso9001 |
| Place of Origin | china |
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Product Specification
| Payment Terms | T/T,L/C | Supply Ability | 500 Sets / Month |
| Delivery Time | 10-60 Days | Packaging Details | Anti-corrosion film + Shockproof foam + Wooden crate |
| Material | As Request | Heat Treatment | As Request |
| Surface Treatment | Sand Blasting/ Polishing | Service Provided | Video Technical Support |
| Warranty | 6 Months | Hardness | HRC 58- 64 As General |
| Standards | DIN, GB, Etc. | Technics | CNC Machining |
| Brand Name | zhitian | Model Number | Customizable |
| Certification | iso9001 | Place of Origin | china |
In every co-rotating twin screw extruder, screw elements are the critical motion components that define how efficiently materials are conveyed, mixed, and plasticized. Their geometry, surface quality, and alloy composition directly affect production stability, product uniformity, and mechanical wear.
ZHITIAN’s screw elements are manufactured through multi-axis CNC machining and advanced heat treatment, achieving micron-level accuracy and perfect axial alignment. Designed for long-term, high-torque operation, these elements maintain dimensional stability even under extreme mechanical stress and high temperature conditions.
To meet the diverse requirements of polymer compounding and engineering material modification, ZHITIAN offers a comprehensive selection of wear-resistant and corrosion-resistant materials such as W6Mo5Cr4V2, 38CrMoAl, Cr12MoV, SKD61, and PM-HIP alloys (SAM26, SAM39, CPM10V, CPM9V).
Each production step — from material inspection to finishing — follows a standardized process, ensuring consistency across every segment and guaranteeing full interchangeability between screw elements.
| Attribute | Specification |
|---|---|
| Base Materials | W6Mo5Cr4V2, 38CrMoAl, Cr12MoV, SKD61, PM-HIP (SAM26, SAM39, CPM10V, CPM9V) |
| Hardness Level | 58–69 HRC (varies by alloy type) |
| Surface Treatment Options | Nitriding, Polishing, or Plasma Coating |
| Tolerance Accuracy | ±0.01 mm on key engagement surfaces |
| Processing Method | CNC machining + precision grinding |
| Applicable Extruder Range | 20–180 mm screw diameter systems |
| Functional Types | Conveying, Mixing, Kneading, Shearing, Dispersing |
| Industry Applications | Plastics, Rubber, Chemicals, Biopolymers, Additive Masterbatch |
Exceptional wear life thanks to powder metallurgy alloys
Corrosion resistance for chemical and filled polymer applications
Smooth torque transmission through precision interlocking design
Optimized surface finish for minimal material adhesion
Full customization for geometry, flight pitch, and material grade
ZHITIAN screw elements are widely applied in:
Engineering polymer compounding and blending
Masterbatch and additive manufacturing
Elastomer and rubber compounding lines
High-filler and fiber-reinforced extrusion
Corrosive or high-temperature chemical extrusion processes
At ZHITIAN, we integrate metallurgical expertise with digital manufacturing.
Each screw element is traceable through its production batch, from raw material to final inspection. Using 3D coordinate measuring systems (CMM) and digital hardness verification, we ensure every element meets stringent quality and interchangeability standards.
Q1: How do ZHITIAN screw elements ensure consistent extrusion performance?
A1: Through standardized geometry and precise machining tolerances, each segment maintains stable shear and mixing zones, preventing process fluctuations.
Q2: What is the difference between tool steel and PM-HIP materials?
A2: Tool steels like W6Mo5Cr4V2 and SKD61 offer excellent hardness and toughness, while PM-HIP materials (e.g., CPM10V) provide superior wear and corrosion resistance under extreme loads.
Q3: Can ZHITIAN customize screw elements for special polymers?
A3: Yes. We design and produce customized screw elements based on polymer viscosity, filler ratio, and throughput requirements.
Q4: How do you guarantee compatibility with my extruder brand?
A4: All screw elements are fully interchangeable with global extruder models from leading OEMs. CAD verification ensures dimensional alignment before production.
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2006
Total Annual:
10000000-12000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Specializing in the production of twin-screw extruder parts Zhitian, a high-tech enterprise and Jiangsu Province-certified Specialized, Refined, Distinctive, and Innovative (SRDI) company, has specialized in twin-screw extruder parts for over two decades. With two production bases in Nanjing... Specializing in the production of twin-screw extruder parts Zhitian, a high-tech enterprise and Jiangsu Province-certified Specialized, Refined, Distinctive, and Innovative (SRDI) company, has specialized in twin-screw extruder parts for over two decades. With two production bases in Nanjing...
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