Factory wholesale China Screw Element manufacturers and suppliers

Product Description

Screw Element

We are committed to “Making your screw barrel business Easier with Joys and Success”.

China Screw Element, one of our products, E.J.S welcomes interested companies to cooperate with us, we look forward to having the opportunity of working with companies around the world for constant growth and mutual success.
We emphasize details, we pursue excellence. Strict quality management, great communication and services, reasonable prices bring us repeat orders.

Contact us by our website or phone or email, we'll be happy to serve you.

Unlike western people, we Chinese prefer not to put all eggs in one basket. When we focus on screws and barrels, we have different types, such as Parallel Twin Screw. Therefore when one product is less requested, the other one might need more. This will keep our factory in good balance.

Screw element, no matter conveying screw element, mixing screw element,kneading block, transitional screw element, profile element, Schubkanten element, elongational element, Igel element, Camelback element, or blister, EJS can do it for you.

Bore diameter available for Segment twin screw barrel

¢12~¢350

Popular Materials used for Segment twin screw barrel

38CrMoAlA(1.8509)

Steel 45

W6Mo5Cr4V2

40CrNiMoA

40Cr

HYM4

Surface Treatment of screw element

Full body nitrided

Bimetallic alloy coating

Screw element making masterbatch serves in the following areas:

Blown film & lamination

PP raffia/Yarn

PP non-woven fabric

Blow molding

Injection molding

Thermoformed sheet

HDPE/PP pipe extrusion

Polyester and Nylon yarn

Fiber extrusion

Profile extrusion

Tube extrusion

screw elementworking on various masterbatch extruders

Color masterbatch

Additive masterbatch

Filler masterbatch

How do I obtain a quote for my screw elements?

Usually customers send us drawings indicating the demands of surface treatment, OR send us samples. When we have all necessary information, we’ll be able to provide a price quote within one working day.

How do I choose the right steel and heat-treatment for my particular screw elements?

Please contact your exclusive sales representative telling us the type of production and expected life so that most suitable steel and heat-treatment will be selected.

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.