Product Description

Our Mirror Surface Twin Screw Extruder Element is a precision-engineered, double-flighted (double-start) screw designed for high-performance plastics and rubber compounding. Featuring a mirror-polished surface for reduced material adhesion and enhanced flow efficiency, this screw element is heat-treated for superior hardenability, ensuring extended service life even under abrasive processing conditions.

Features

• Product Name: Double Flighted Screw Element
• Thread Direction: Right Hand
• Surface Treatment: Polished
• Connection method: Spline
• Thread Size: Customizable
• Number Of Flights: 2
• Keywords: Dual Coil Screw Element, Screw Element with Dual Flights, Screw Element with Double Coils

Technical Parameters

Screw Diameter	Optional
Screw Design	Double Flighted Screw Element
Hardness	58-60HRC
Brand Name	Nanxiang Machinery
Surface Treatment	Polishing/Sand Blasting
Materials	SAM10/SAM39/WR5/WR14/W6Mo5Cr4V2
Place of Origin	Sichuan , China
Warranty	6 months
Screw Range	Φ 15.6 - Φ 430mm
Suit For	Pharmaceuticals Extrusion Chemical Extrusion Food Extrusion Powder Coating Extrusion

Applications

Plastics Compounding – Enhanced dispersion of fillers, pigments, and additives.
Rubber Processing – Efficient mastication and homogenization.
High-Temperature Polymers – Withstands abrasive materials (e.g., glass-filled compounds).
Masterbatch Production – Uniform color/pigment distribution.
Food/Pharmaceutical Extrusion – Mirror finish meets hygiene requirements.

Extruder Screw Materials

1. For wear application:

Tool Steel : W6Mo5Cr4V2;

PM-HIP material : SAM10 SAM26 SAM39 CPM10V CPM9V

2. For corrosion application:

Nitrided Steel: 38CrMoAI;

PM-HIP material : SAM26 SAM39 CPM10V CPM9V

3. For wear and corrosion application:

PM-HIP material:SAM26 SAM39 CPM10V CPM9V

4. Other Materials:

Stainless Steel: 316L, C276, SX737 etc.

Customization

Product Customization Services for Double Flighted Screw Element

The Double Flighted Screw Element is a product manufactured by Nanxiang Machinery. It is available in various models, with the Model Number being customizable as per the customer's requirements. The product is made in Sichuan, China, and is certified with ISO 9001.

The minimum order quantity for this product is negotiable, and the price is also negotiable. The packaging details include a wooden package, and the delivery time is approximately 30-60 days. The payment terms for this product are TT/LC, and the supply ability is 300M/Month.

The connection method for this product is Spline, and it has a torque capacity of up to 5000 Nm. The screw diameter ranges from 10mm-300mm and can be customized as per the customer's requirements. The product has 2 flights, making it a Double Start Screw Element or a Screw Element with Double Coils or Double Flighting.

This product is highly wear-resistant and is suitable for a variety of applications.

Support twin-screw extruder brand

Support and Services

The Double Flighted Screw Element is a product used in various industries for conveying and processing materials. Our technical support team is available to assist with any questions or issues related to the product, including installation, maintenance, and troubleshooting. Additionally, we offer a range of services for the Double Flighted Screw Element, including repair and replacement of parts, customization options, and performance testing. Our team is dedicated to ensuring that our customers receive the highest level of support and service for this product.

Tool Steel

Production Process

	NO.1 Workblank Select high-quality raw materials
NO.2 Piecewise According to the drawing section length
	NO.3 Hit bottom hole Rough machining the bottom hole,and then pull spline
NO.4 Machining thread Professional high-end processing equipment,rough machining threads
	NO.5 Finish machining thread
NO.6 Threading grinding Further control of tolerance Length:-0.01mm-+0.01mm OD:-0.03mm-0mm Transition arc:-0.02mm-+0.02mm

Packing and Shipping

The Double Flighted Screw Element will be packed in a sturdy cardboard box to ensure safe transportation.

The box will be sealed with strong adhesive tape to prevent any damage or tampering during shipping.

Shipping:

The product will be shipped via a reliable courier service.

The shipping time will depend on the destination, but we will provide you with an estimated delivery date when we confirm your order.

We will also provide you with a tracking number so you can track your shipment.

Certificate

Why choose us?

Nanxiang Machinery is a specialized manufacturer of precision-machined components for twin-screw extruders, including threaded elements, kneading blocks, mandrels, super-hard screw accessories, and wear-resistant alloy steel sleeves. Our products are widely applied in renowned international brands such as Coperion, Lerstritz, Berstorff, KOBE, and JSW, serving industries like plastics, food, feed, pellet manufacturing, pharmaceuticals, and new energy.

FAQ

Q: How does the mirror surface affect the performance of the screw element?
A: The mirror surface reduces friction between the screw element and the materials being processed. This reduces the energy consumption of the extruder, prevents material sticking, and ensures a more efficient and stable extrusion process. It also makes cleaning the screw element easier after use.

Q: Do you accept OEM or branding services?
A: Yes. We support OEM production, including laser engraving of logos, custom packaging, and technical drawing confidentiality.

Q: What industries are your products currently serving?
A: Our screw elements are widely used by plastic compounding factories, masterbatch producers, food processors, feed manufacturers, and new energy companies in China and internationally (e.g., Japan, Russia, India, Thailand, etc.).