Injection Molding Screw Barrels – Precision, Performance, and Reliability by Vishwakarma Plast
Vishwakarma Plast is one of India’s most trusted manufacturers of Injection Moulding Screw Barrels, serving some of the largest plastic processing companies across the country. Headquartered in Ahmedabad, Gujarat, we specialize in designing and manufacturing screw barrels that deliver exceptional performance, durability, and efficiency in plastic injection molding applications. Our expertise, advanced technology, and commitment to quality have made us a preferred OEM supplier for top machine manufacturers, assemblers, and distributors.
Understanding Injection Molding Screw Barrels
Injection molding screw barrels are essential components in plastic processing machines. Their role is to melt, mix, and inject plastic materials into molds with precision and consistency. Compared to extrusion or blow molding screws, injection molding screws are simpler in design — they feature fewer flights and a shorter length-to-diameter ratio, which makes them easier to produce and maintain.
However, even with this simplicity, precision in manufacturing is critical. Any deviation in dimensions, flight depth, or coating uniformity can affect plasticizing performance, shot consistency, and part quality.
Key Considerations When Procuring Injection Molding Screw Barrels
One of the most important factors while ordering an injection molding screw barrel is having an accurate technical drawing of your screw. Without it, a manufacturer may have to spend extra time and effort on reverse engineering — often resulting in a significantly higher cost than the actual price of the component.
To save cost and maintain confidentiality, customers are advised to:
Keep their processing details confidential.
Share only the technical drawing of the screw with multiple manufacturers.
Request a quote based on the same drawing to ensure accurate and fair pricing.
This method not only protects your proprietary data but also ensures economical and transparent procurement.
The Importance of Coating Selection
Another crucial aspect of screw barrel performance is the bimetallic or carbide coating applied to the surface. The type and quality of coating determine how resistant the screw will be to abrasion, corrosion, and wear.
At Vishwakarma Plast, we offer a range of coating options — from 0.0% tungsten to 90% tungsten (W) — depending on the application and polymer being processed. The cost of the screw is closely tied to the grade of coating material and the method used for application.
We utilize advanced coating techniques such as HVOF (High-Velocity Oxy Fuel), HVAF, TPA, Sprayweld, and Sintering, providing the ultimate solution for abrasive and wear resistance using WCNi carbide matrix composites with up to 88% tungsten content.
OEM Manufacturer with Advanced Technology
Vishwakarma Plast is an OEM (Original Equipment Manufacturer) that supplies screw barrels to various machine manufacturers, assemblers, and equipment suppliers across India — without requiring details like machine model number or applicable polymers.
Our advanced in-house technology allows us to manufacture screws with high precision and minimal lead time:
Thread milling can be completed in just 3 hours.
Gas nitriding, grinding, and polishing processes take approximately 10 to 15 days.
This means customers can receive a fully finished screw within 10–12 days.
Specifications and Capabilities
Screw Diameter: 22 mm to 250 mm
Screw Length: Up to 5200 mm in one piece; up to 9000 mm in two pieces
Barrel OD: Up to 350 mm
These specifications make Vishwakarma Plast capable of serving a wide range of injection molding machines used across various industries.
Materials Used
Our screw barrels are manufactured using high-quality materials that ensure long service life and high performance under continuous operation:
EN41B Nitriding Steel (Musco) – Standard material used for strength and hardness
German Imported 41CrMoAl7 Equivalent – For superior toughness and wear resistance
China’s 38CrMoAlA – Available on special request
Hardfacing Alloys: Stellite and Colmonoy
Superalloys: Inconel and Hastelloy
Nitriding Process:
Thickness: 0.5 to 0.7 mm
Hardness: ~60–75 HRC (~1000 HV)
Plasma Nitriding available on special request
Surface Treatments:
Hard Chrome Plating (default process)
Bimetallic Treatment with HSS M-type or Tool Steel D2
Carbide Coating for enhanced wear resistance
Production & Delivery
Depending on the complexity of the screw design, production time ranges between 2–4 weeks. Our streamlined process ensures that customers receive high-quality products within the committed time frame. Every screw undergoes stringent quality checks, including dimensional inspection, surface finish evaluation, and hardness testing, ensuring optimal performance and reliability.
Supplying Across India
Vishwakarma Plast supplies injection molding screw barrels not only to end users but also in bulk quantities to other screw barrel manufacturers and suppliers in:
Ahmedabad, Delhi, Telangana, Hyderabad, Maharashtra, Punjab, Andhra Pradesh, Tamil Nadu, and Mumbai.
Due to confidentiality agreements, we cannot disclose the names of our bulk customers, but we welcome visitors to our facility between 8 AM to 8 PM to see our production setup and quality control standards.
Why Choose Vishwakarma Plast?
OEM Expertise – Manufacturing for major machine makers and suppliers.
Fast Production – Quick turnaround time with precision engineering.
Advanced Materials – Using high-grade steels, alloys, and coatings.
Customization – Tailored solutions based on customer drawings.
Quality Assurance – Multi-stage inspection and testing at every step.
Competitive Pricing – Best value for high-performance screw barrels.
Get in Touch
If you are looking for high-quality, durable, and economical injection molding screw barrels, Vishwakarma Plast is your ultimate destination.
📩 Email: info@vishwakarmaplast.com
📞 Contact (All numbers have WhatsApp):
+91-72020-74499 | +91-99785-26038 | +91-97241-52020
Request our product-wise brochure or connect with us for custom manufacturing, bulk orders, or OEM supply requirements.
Vishwakarma Plast – Precision Engineered Screw Barrels for the Future of Plastic Processing.