Product Description

On our island, there are hundreds of factories producing screw barrels, most of them are making single screw barrels. EJS produces both twin screw barrels as well as single screw barrel, especially single screw barrel for extrusion.For years, our factory has been on the top of extrusion screw barrel export business, with many leading machine brands from west to the east.

Product Detail

Single screw barrel

Single screw barrel is largely requested by the Extruder Maker customer or after-sales as spare parts. By this way, we make it customized with proper steel 1.8509, 18519, 1.8550 or AISI 4140.  For injection screw barrel, we make the designs or make it customized.  E.J.S is one of the fastest growing factories for supplying China Single Screw Barrel for PVC Injection and PVC Injection Single Screw Barrel.  We look forward suitable chances to support your developing by saving more and earn more.

 

As a specialized single screw barrel producer for China Single Screw Barrel for PVC Injection,  PVC Injection Single Screw Barrel ,  we always put QUALITY as top priority ,and make perfect details. Every dimension , every tolerance will be checked during production and before dispatch.  A quality record tracking is well filed for every product out from our factory.


On our island, there are hundreds of factories producing screw barrels, most of them are making single screw barrels. EJS produces both twin screw barrels as well as single screw barrel, especially single screw barrel for extrusion.

For years, our factory has been on the top of extrusion screw barrel export business, with many leading machine brands from west to the east. E.J.S has been manufacturing 1.8550 material screw barrel for years, you are welcome to contact EJS Team for more details.




Bore diameter available for Extrusion screw barrel

¢12~¢500


Popular Materials used for Extrusion screw barrel

38CrMoAlA(1.8509)

34CrAlNi7(1.8550)

31CrMoV9(1.8519)

40Cr(4340)

42CrMo(4140)

SS304

SS316

D2(1.2379)

SKD61

Hastelloy 276

Inconel 625


Surface Treatment of Single screw barrel

Nitrided

Bimetallic alloy coated

Hardened

Chrome-plating


Application of Single screw barrel

Pipe extrusion

Film extrusion

Injection moulding machine

Recycling

Fiber and filament extrusion

Pelletizing

Polymerization

Profile extrusion

Sheet extrusion

Tube extrusion

Wire and Cable extrusion


What’s the difference between EJS single screw barrels and others?

Others produce fairly good single screw barrels, EJS single screw barrels are BETTER, EJS is more strict on materials, tolerance and accuracy, surface treatment, inspection, packaging and even logistics, therefore EJS single screw barrels works longer and better at machines.


Have you sold any single screw barrels to our country? If YES, can you give me some references?

As an exporter of over 15 years, we have sold single screw barrels to many countries in Europe, Middle East, Africa, America, Oceania and surely Asia; however we always keep our company names confidential. When you come to our factory and see many single screw barrels and feel familiar--- don’t be surprised, because we manufacture many screw barrels for big machine builders and also screw barrel manufacturers in other countries.

Please be free to contact your sales agent at EJS to see if we have shipped to your particular country, certainly you don’t want to be the last!


About E.J.S.

EJS Screw Barrels is a newly created brand name for Export business with manufacturing experiences since 1992.
A screw barrel manufacturer dedicated on producing customized screw barrel and design extruder screw barrels, injection moulding screw barrels.


Bimetallic Screw Barrels

We started to make bimetallic screw barrel at a very early age, almost the same time as the first bimetallic barrel was born in China. Now we have several types for options depending on different applications

Bimetallic Barrels

Alloy Type

EJS01 Alloy

EJS02 Alloy

EJS03 Alloy

EJS04 Alloy

Alloy Components

Fe+Ni+Cr+B
(Fe:65, Ni:14, Cr8, B:3.5)

Ni+Cr+Co+B

Ni+Cr+Co+V+B

Ni+Wc+Cr+B
(Ni:50, Wc:15~35,Cr:6~8, B:2.5~3.2)

Wearing Resistance

★★★

★★

★★★

★★★★

Corrosion Resistance

★★

★★★

★★★

★★★

Alloy Thickness

2~3mm

1.5~2mm

1.5~2mm

1.5~2mm

Hardness

HRC 58-65

HRC 50-58

HRC 55-60

HRC 55-65

Temperature Range

≤400

≤450

≤450

≤600

Coefficient Thermal

RT~250℃

11.0x10-6

11.0x10-6

11.5x10-6

11.0x10-6

Expansion(/℃)

RT~400℃

11.4x10-6

11.4x10-6

12.4x10-6

12x10-6

Range of Workable Length

700mm~3000mm/piece

Base Steel Vastly Used

40Cr: 42CrMo

Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good


Bimetallic Screws

Suitable for

Single Screw, Twin Parallel Screw, Twin Conical Screw

Alloy Type

Ni60

CoImonoy 56

CoImonoy 83

Alloy Components

Ni+Cr+Fe+Si
(Ni:65, Cr:17, Fe:15, Si:5)

Ni+Cr+Si+Fe
(Ni: 68, Cr:18, Si:5, Fe:5)

Ni+Wc+Cr+C
(Ni:40, Wc:34, Cr:20, C:2)

Anti-Wearing Level

★★★

★★★

★★★★

Anti-Corrosion Level

★★★★

★★★★

★★★★

Alloy Thickness

1~1.5mm

1~1.5mm

1~1.5mm

Hardness

HRC 56-62

HRC 46~61

HRC 43-48

Applied Glass Fiber

Under 10%

 

 

Range of Workable Length

Any length needed

Base Steel Vastly Used

38CrMoAI(1.8509), 34CrAINi7(1.8550), 31CrMoV9(1.8519)

Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good



Quality Inspection

Quality is a very important step during production. For making a quality screw barrel, all tolerances should be fulfilled and all dimensions should be correct and put in records.

We provide inspection report, material certificate for every of our supplied screw barrels.


Packaging

Packaging is the last but very important step before shipping. A strong and smart packing box is also part of our quality. It is not only used to protect the screws barrels well during transportation, also provide an easy way for our customer to unpack.





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