China Extrusion Screw Barrel manufacturers and suppliers

Product Description

Extrusion screw barrel

Our personnel are generally in the spirit of "Emphasize details, Pursue excellence", and together with “Keep communicating, Keep focusing, Keep cooperating, Keep Improving”, we do out best job to earn and keep every single customer's trust on us for Top Suppliers China Extrusion Screw Barrel. Our company is quickly growing in size and name because of our focused dedication to superior quality manufacturing as well as consistent great customers service.
Our company is looking for agents sincerely. What are you waiting for? Come and join us. The sooner, the better!

EJS factory was born in 1992 from extrusion screw barrel, it’s twin conical screw barrel to be more exact. In all these years, our factory is growing to be a main manufacturer for extrusion screw barrel in this field. In 2020, we have a turnover about USD38M thanks to customers nationally and internationally.

E.J.S uses high quality 1.8550 material, 31crmov9 to produce screws and barrels for customers globally to ensure the quality of screws and barrels, because raw material is the core and footstone.

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

Surface Treatment of Extrusion screw barrel

Nitrided

Bimetallic alloy coated

Hardened

Chrome-plating

Application of Extrusion screw barrel

Panel extrusion

Profile extrusion

Sheet extrusion

Pipe extrusion

Board extrusion

Compound extrusion

Blow moulding extrusion

Inspection of Extrusion screw barrel

At EJS, quality is not only quality parts, it also means top quality steel for extrusion screw barrel production, quality packing boxes, moving of extrusion screw barrel from one step to next, inspection at every process, identification number stamping, local transportation from factory to ports, good communication between YOU and EJS etc, in a word it’s about a PACKAGE, it’s about TEAMWORK, it’s about our MIND.

What’s the difference between extrusion screw barrel and injection screw barrel?

Physically speaking injection screw always has screw tip, non-return valve and check ring, injection barrel always has end cap and nozzle BUT NO FLANGE.

Extrusion barrel has flange.

As a manufacturer, factories doing injection screw barrel usually has bigger volume per item; while extrusion screw barrel is almost 100% customized from machine to machine. This is more challenging technically speaking.

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.