PVC PIPE Single Screw

Zhoushan Nanhaiya is a leading manufacturer of screw barrel in China for more than 20 years. We provide one-stop solutions in the plastic-related fields for global enterprises. OEM ODM is supported.

Why choose Nanhaiya?

1. High-quality Raw Material

We use high quality raw materials which are directly purchased from steel mills,select the high-level steel, which, through forging and extrusion, achieves better density and toughness.

2. Advanced Bimetallic Craft

We use imported nickel-based alloy + tungsten alloy. The length of the alloy is over 400mm, and the depth is 2 - 3mm. Alloy hardness can reach HRC58-65. The alloy can be customized according to customers' requirements to achieve better wear and corrosion resistance, thus extending the service life of the screw and barrel.

3. Fast Delivery

For standard-type screws, we have established a standardized inventory system to achieve fast delivery within 24-48 hours; for customized products, we commit to a delivery cycle of 30-40 days. Customers can keep track of the real-time order progress through timely production status updates.

4. 24-hour After-sales Service

We provide full-life-cycle after-sales services, including installation guidance, troubleshooting, and regular maintenance recommendations. Our after-sales team offers 24-hour response to ensure prompt resolution of customer issues and minimize downtime losses to the greatest extent.

5. Excellent Cost-performance

For products of the same quality, we compete on price; for products at the same price, we excel in quality. Nanhaiya Screws boast ultimate cost-effectiveness, making them your ideal choice.

PVC Pipe Single Screw 

In the production of PVC pipes, the use of single-screw extruders has core advantages in accurately adapting to the characteristics of PVC raw materials, while balancing production stability and cost-effectiveness, making them the mainstream choice in this field.

1. Plasticization Advantages Adapting to PVC Raw Materials

More Precise Temperature Control: PVC is a heat-sensitive raw material that decomposes easily at high temperatures. The heating and cooling systems of single-screw extruders can achieve segmented and precise temperature control, stably maintaining the specific temperature range required for PVC plasticization and reducing the risk of raw material decomposition.

Adaptable Shear Strength: The shearing effect of single screws is relatively mild and controllable. It can not only meet the plasticization needs of PVC from solid particles to uniform melts but also avoid the breakage of PVC molecular chains caused by excessive shearing, thus ensuring the physical properties of pipes (such as impact resistance and aging resistance).

2. Production Advantages for Ensuring Pipe Quality

Stable Conveying and Uniform Wall Thickness: PVC pipes have strict requirements on wall thickness tolerance. Single screws, through their stable spiral conveying structure, can evenly push melts into the mold, avoiding fluctuations in melt pressure, thereby ensuring consistent pipe wall thickness and reducing defects such as eccentricity and depression.

Strong Continuous Production Capacity: PVC pipes are mostly produced in large batches and continuously. Single-screw extruders can realize 24-hour uninterrupted operation with low frequency of shutdowns for adjustments, enabling continuous output of qualified pipes and ensuring production efficiency.

3. Economic Advantages for Reducing Production Costs

Low Equipment Investment: Single-screw extruders have a simple structure. Compared with twin-screw equipment, they have lower procurement costs. They are especially suitable for single-raw-material processing scenarios like PVC pipe production, without the need to pay extra costs for mixing functions.

Low Maintenance Costs: Single screws have fewer components. Daily cleaning and replacement maintenance of screws and barrels are more convenient, requiring less time and spare part costs. This can reduce equipment shutdown losses and lower long-term operation and maintenance costs.