What materials and treatments are available?

We offer various materials including 38CrMoAl, 40Cr, SKD61, and bimetallic alloys. Treatments include nitriding (case depth 0.45-0.7mm, hardness Hv 850-1000), hard chrome plating, and carburizing.

ISO Certified Conical Twin Screw and Cylinder for Plastic Extrusion Machine

Name: ISO Certified Conical Twin Screw and Cylinder for Plastic Extrusion Machine
Brand: Zhejiang Guangming Plastics Machinery Co., Ltd.
SKU: 2241235765

Zhejiang, ChinaZhejiang Guangming Plastics Machinery Co., Ltd.

US$600.00

1-9 Sets

US$16,000.00

10+ Sets

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Return and Replacement

Warranty

12-18 Months Under Normal Use

Standard

DIN, ASTM, GOST, GB, JIS, ANSI, BS

Technics

Forging

Feature

Recycle

Material

Iron

Treatment

Bimetallic, Nitriding, Hard Chrome Plating

Nitrided Case Depth

0.45~0.7mm

Nitrided Hardness

Hv 850~10000

Surface Hardness

HRC Value

Screw Type

Twin Screw

Heat Treatment

Carburizing, Nitriding, Quenching, Tempering

Materials

38crmoala, 40cr, SKD61, Sacm645

MOQ

1 Set

Delivery Time

30-45 Days Working Days

Transport Package

Wooden Case with Anti-Rust Oil

Specification

25/50~185/340 mm

Trademark

GUANGYOU SCREW

Origin

Zhejiang, China

HS Code

847790

Production Capacity

32, 000 Sets/Year

Key features

ISO Certified Quality: 99.8% qualification rate with zero-defect protocols and German-imported QC systems.

Engineering-Led Customization: Custom geometry and material-specific solutions for abrasive, corrosive, and high-temp polymers.

Advanced Alloy Treatments: Nitriding, bimetallic, and hard chrome plating for superior wear and corrosion resistance.

Global Service & Support: Exported to 50+ countries with 24/7 technical support and comprehensive warranty coverage.

Wide Application Range: Suitable for PVC, PE, PP, WPC, rubber extrusion, and injection molding industries.

Strict Quality Control: 100% inspection of hardness, concentricity, and dimensional tolerance before delivery.

30 Years Expertise: Established in 1992, combining engineering excellence with cutting-edge production capabilities.

Company profile

Years of Export Experience

Zhejiang Guangming Plastics Machinery Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 25 years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤18h

AI-Powered supplier vetting

SummaryZhejiang Guangming Plastic Machinery Co., Ltd. is identified as a combined company manufacturing and selling plastic-processing equipment, plastic products, and mechanical components. It offers screw and barrel products, OEM for known brands, ODM, and customization from samples or designs. The supplier reports documented service procedures, complaint handling, corrective and preventive actions, four R&D engineers, design documentation, and CAD capability. Production is reported at one line, with no ongoing batch quantity reconciliation. Overseas service infrastructure is limited: no overseas warehouse, showroom, agents or branches, and no stated overseas-service countries. Financial records are referenced for 2022–2024, but the provided information does not establish financial strength. A BV audit is recorded, while the audit type and evaluation result are given only as numeric codes without interpretable certification details.

Supplier typeThe supplier is named Zhejiang Guangming Plastic Machinery Co., Ltd. and classified as a combined company. Its stated business scope covers manufacturing and sales of plastic-processing equipment, plastic products, and mechanical parts, plus technical services.

After-Sales capabilityThe supplier reports written and followed procedures for service capability assessment, corrective and preventive actions, and customer complaints. However, it has no overseas warehouse, showroom, overseas agent or branch, and reports zero countries offering overseas services, limiting verified overseas after-sales coverage.

R&D capabilityThe supplier has four R&D engineers, CAD capability, and design input, output, review, verification, and validation documents available for audit. It provides ODM services, but reports no new products in the past year and no available SDK.

Production capacityThe supplier reports one production line, one quality-control test equipment unit, 21–30 quality-control staff, and an annual production output category. It also reports no ongoing quantity reconciliation for each batch or mass production, which is a documented production-control weakness.

Customization capabilityCustomization is explicitly offered from samples and designs, with R&D engineers assigned to customization from designs. The supplier also provides ODM services and maintains related design documentation, supporting a demonstrated customization capability.

Product Q&A

Q:What is the minimum order quantity (MOQ)?

The MOQ is 1 set. We accept small orders to accommodate diverse client needs.

Q:What is the lead time for production?

Lead time varies by size and treatment. Generally, 30-45 working days for standard items. Nitriding single screw barrels take 40-70+ days depending on diameter. Bimetallic screws require an additional 5 days.

Q:What is the lifespan of the screw and barrel?

Lifespan depends on the material formula and heat treatment. For 30phr nitriding, expect 3-5 years. Bimetallic screws and barrels have an extended lifespan due to enhanced durability.

Q:Can you customize the screw and barrel design?

Yes, we offer engineering-led customization. We can revise or redesign screws and barrels to improve output or melt quality based on your specific machine model and raw material requirements.

Q:How do you ensure product quality?

We maintain a 99.8% qualification rate through zero-defect protocols. Each product undergoes 100% inspection for hardness, concentricity, and tolerance. We also provide test reports for material, heat treatment, and tolerance before shipping.