Nitriding Steel Screw and Barrel for Sale
The main advantages of our screw and barrel:
A. Advanced Nitriding Technology
B. Anti-corrosion and Wear-Resistant 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 various screw functions.
**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 Nitriding 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° |
| Heating Treatment |
Nitriding, Electroplated Hard Chrome Finish, High Frequency Quenching |
**Why Choose Us?**
A. Long time 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 up to 8 meters in length, ensuring the straightness of the barrel inside
E. CAD drawing confirmation before production starts
F. Prompt after-sales service
G. Land owner with registered capital of RMB 25,000,000
**Remarks:**
We can design and manufacture custom screw barrels according to your specific requirements.
**Packaging Options:**
1) Wooden case packaging
2) Plastic film packaging
3) Suitable for transportation
4) Customized as per buyer’s request
5) One piece per package
**FAQs:**
**Q: What are we?**
A: We are a factory with our own import and export license.
**Q: How to reach us?**
A: The nearest airport is Wenzhou Airport, and the nearest train station is Ruian Station.
**Q: How do we ensure quality?**
A: Our professional engineers and staff check every detail and dimension from raw materials, nitriding treatment, and precision grinding. We perform crucial nitriding treatment ourselves using ovens with a depth of 8000mm, and we complete the process over 8 days and nights, which ensures the hardness and durability of the screw barrel.
**Office Information:**
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 key parts in Ruian, known as the base of plastic machinery.
The company owns many computer-controlled CNC milling machines with a length of 8000mm in the Fanuc series, as well as a deep-hole drilling machine of 18000mm, along with other advanced equipment.
Long-term nitriding treatment for 7 days and nights greatly ensures the hardness and lifespan of its products. Meanwhile, the company and its products have passed assessments by SGS, Bureau Veritas, TUV, and CE certification.
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