FAQs
Any questions for our company
A screw barrel is the heart of plastic processing machines such as injection molding and extruders. The rotating screw pushes raw polymer through the heated barrel, ensuring melting, mixing, and homogenizing before shaping into the final product.
Single screw barrels are used for general extrusion and injection molding, while twin screw barrels (conical or parallel) are preferred for higher output, PVC extrusion, compounding, and processes that require better mixing.
We use high-grade alloy steels such asEN41B, H13, 38CrMoAlA, and bimetallic alloys for wear and corrosion resistance. Material selection depends on the application and polymer type.
With proper maintenance and depending on material processed, a screw barrel typically lasts 1.5 to 3 years. For abrasive or glass-filled materials, bimetallic barrels offer longer service life.
The right choice depends on machine type, polymer processed, output requirement, and wear conditions. Our engineering team helps recommend the best fit based on your drawings or application.
Bimetallic screw barrels have higher wear resistance, longer life, and better corrosion protection, making them ideal for processing filled or abrasive materials.
Screw barrels are used in plastic extrusion, injection molding, recycling, pipe, profile, sheet, and film manufacturing industries.
Yes, we specialize in customized screw barrels manufactured as per OEM standards, drawings, or samples.
Options include gas nitriding, induction hardening, hard chrome plating, and bimetallic alloy lining, depending on application needs.
Common signs include reduced output, inconsistent melt quality, higher back pressure, or visible wear on the screw flights and barrel ID.
We maintain precise machining tolerances of ±0.02mm to ±0.05mm, ensuring efficiency and machine compatibility.
Choosing bimetallic alloy barrels, special coatings, and regular lubrication significantly improves resistance and life.
Conical twin screw barrels are used for PVC pipe/profile extrusion, while parallel twin screw barrels are suitable for higher output applications like sheet and compounding.
Segmented barrels consist of replaceable sections, allowing easy maintenance, flexibility, and cost savings in compounding and high-wear applications.
Yes, with bimetallic liners or hardened alloys, screw barrels can process abrasive and glass-filled polymers effectively.
Nitrided barrels achieve 60–70 HRC surface hardness, while bimetallic alloys can reach up to 68 HRC.
We recommend inspection every 6 months and preventive maintenance depending on machine usage.
Yes, many barrels can be rebuilt through reconditioning, grinding, or hardfacing, which reduces cost compared to full replacement.
Wear is caused by abrasive fillers, inadequate lubrication, high processing temperatures, or poor material quality.
Yes, we offer rebuilding, nitriding, grinding, and hardfacing services for extending barrel life.
Use quality raw materials, avoid contamination, maintain lubrication, and choose wear-resistant barrels for tough applications.
Yes, we provide technical support and inspection services for troubleshooting and maintenance planning.
Key indicators include reduced plasticizing capacity, black spots, unmelted granules, or increased cycle times.
Yes, we maintain stock for standard sizes and can manufacture custom designs quickly.
Prices vary depending on size, material, hardening process, and application. Contact us with your machine details for a tailored quotation.
Yes, we specialize in custom and OEM screw barrels based on machine drawings or customer specifications.
Standard screw barrels are delivered in 2–4 weeks, while custom designs may take 4–6 weeks.
Yes, we export to Asia, Europe, Africa, and the Americas, serving global clients with quality-certified products.
We offer warranty against material and manufacturing defects (typically 12 months under standard working conditions).
Yes, we provide special pricing and discounts for bulk orders or long-term partnerships.
Every screw barrel undergoes CNC machining, heat treatment, hardness testing, and final inspection before dispatch.
Absolutely. You can share drawings, specifications, or a physical sample, and we’ll provide a quotation accordingly.