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Copyright Nanjing Jieya Extrusion Equipment Co., Ltd

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Screw and Barrel for Single Screw Extruder

Material: 38CrMoAlA
Alloy (bimetal)
Product Description

Nanjing Jieya Extrusion Equipment Co., Ltd is made up of senior engineers who have devoted themselves to extruder R&D, manufacturing, marketing and services for many years, mainly supplying high-efficiency single-screw and twin-screw compounding extruders in complete set which include correlative processing technology till the fulfillment of turn-key project. 



Material: 38CrMoAlA

Alloy (bimetal)

Technicl process

1. Heat treatment

2. Quenching

3. Nitriding treatment

4. Bimetallic alloy welding for screw

5. Bimetallic alloy centrifugal casting for barrel

6. Hard-chrome electroplating

Technical parameters

Nitriding layer depth:0.5-0.8mm

Nitrided hardness:900-1000HV

Bimetallic layer depth:3 mm

Bimetallic hardness:57~69HRC

Hard-chrome plating hardness after nitriding:≥950HV

Chrome-plating layer depth:0.03-0.09mm

Surface roughness:Ra 0.4

Linearity of screw:0.015mm

Machining center:

Packing & shipping:


1. Are you a factory or trading company?

We’re a factory, located in Lishui, Nanjing city with 20 years experience.

2. Where is your factory located? How can I visit there?

Our factory is located in NO. 337 East Zhening Road, Zhetang Town, Lishui, Nanjing, Jiangsu Province, China.

(1) You can fly to Nanjing Lukou Airport directly. We will arrange to pick u up at Lukou airport.

(2) You can fly to Shanghai Pudong International Airport then come to Nanjing by High-speed bullet train, then we will pick you up at Nanjing south railway station.

3. What's your advantages?

(1) Excellent quality control

(2) Professional Tech. and R&D team

(3) All the parts are made by ourselves

(4) Mega after-sale service

(5) Sufficient spare parts

(6) Fast delivery

(7) Competitive price

4. How long is the delivery time?

Normally, 40 days from the date we receive your deposit.

5. How can I know the status of my order?

We will keep you updated by photos and videos. Once the machine is completed and ready for shipment, we will inform you to come to inspect the machine.

6. How long is the warranty?

One-year warranty for the whole machine.


If you have any questions about extruders or spare parts, send us an email to discuss your needs and see how we can help you by

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