Made in China – Aluminum Plate and Screw
The main advantages of the screw barrel:
A. Advanced Nitriding Technology
B. Anti-corrosion and Wear-Resisting Duplex Metal Spraying Technology
C. We use special alloy powders that are sprayed and welded onto the screw's ridge, with different alloys and welding methods tailored for screws with various functions.
Certifications: BV, SGS, CE, TUV
Why choose us?
A. Long-term experience and history in the industry
B. In-house nitriding and heat treatment processes
C. Advanced Fanuc series CNC milling machines
D. Deep hole drilling machine capable of 10 meters length, ensuring the straightness of the barrel’s inner surface
E. CAD drawing confirmation before production begins
F. Prompt after-sales service
G. Land owner with a registered capital of 25 million RMB
Remarks: We can design and manufacture various types of screw barrels based on customer requirements.
What is the packaging?
1. Wooden case packaging
2. Plastic film packaging
3. Suitable for transportation
4. Customized as per buyer's request
5. Each piece is packed separately
FAQ:
Q: What are we?
A: We are a factory with our own import and export license.
Q: How to get to us?
A: The nearest airport is Wenzhou Airport, and the nearest train station is Ruian Station.
Q: How do we ensure the quality of the screw barrel?
A: We have professional engineers and staff who check every detail and dimension from the raw material, nitriding treatment, and super grinding. We perform the crucial nitriding treatment ourselves using ovens that can handle depths up to 8,000mm, and we conduct the process for 8 days and nights, which significantly ensures the hardness and durability of the screw barrel.
Office:
Zhejiang Pinbo Plastic Machinery Co., Ltd. is located in Ruian, Wenzhou City, under the brand PYM (formerly Ruian Yumin Machine Screw Co., Ltd. since 1988). The company specializes in manufacturing screw barrels, ZLYJ series gearboxes, T-dies, filters, and extruder machines. It has become one of the largest suppliers of main parts in Ruian City, known as the base of plastic machinery.
We own many computer-controlled CNC milling machines with lengths up to 8,000mm, a deep-hole drilling machine of 18,000mm, and other advanced equipment. We perform long-term nitriding treatment for 7 days and nights, ensuring the hardness and lifespan of our products. Additionally, the company and its products have passed assessments by SGS, Bureau Veritas, TUV, and CE certification.
Welcome to visit our company! Feel free to contact us for any questions.
Main Parameters:
| Product | The best single screw barrel for extruder in Ruian |
| Material | 38 CrMoAlA (JIS SACM645); 42 CrMo (JIS SCM440) |
| Hardness of Nitriding Treatment | HV 900° ~ 1100° |
| Tempering Hardness | HB 240° ~ 280° |
| Depth of Nitrogen Layer | 0.6 ~ 0.8 mm |
| Nitrided Brittleness | Above 1 stage |
| Surface Roughness | Ra 0.4 µm |
| Screw Straightness | 0.015 mm |
| Hardness of Surface Chromium Plating After Nitriding | HV ≥ 950 HV |
| Chromium Plating Depth | 0.025 - 0.085 mm |
| Alloy Depth | 2.5 mm - 4 mm |
| Alloy Hardness | HRC 62° ~ 72° |
| Heat Treatment | Nitriding, Electroplated Hard Chrome Finish, High Frequency Quenching |
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