Screw Element
Product Description
Product Detail
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
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Bimetallic Barrels |
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Alloy Type |
EJS01 Alloy |
EJS02 Alloy |
EJS03 Alloy |
EJS04 Alloy |
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Alloy Components |
Fe+Ni+Cr+B |
Ni+Cr+Co+B |
Ni+Cr+Co+V+B |
Ni+Wc+Cr+B |
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Wearing Resistance |
★★★ |
★★ |
★★★ |
★★★★ |
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Corrosion Resistance |
★★ |
★★★ |
★★★ |
★★★ |
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Alloy Thickness |
2~3mm |
1.5~2mm |
1.5~2mm |
1.5~2mm |
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Hardness |
HRC 58-65 |
HRC 50-58 |
HRC 55-60 |
HRC 55-65 |
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Temperature Range |
≤400 |
≤450 |
≤450 |
≤600 |
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Coefficient Thermal |
RT~250℃ |
11.0x10-6 |
11.0x10-6 |
11.5x10-6 |
11.0x10-6 |
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Expansion(/℃) |
RT~400℃ |
11.4x10-6 |
11.4x10-6 |
12.4x10-6 |
12x10-6 |
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Range of Workable Length |
700mm~3000mm/piece |
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Base Steel Vastly Used |
40Cr: 42CrMo |
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Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good |
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Bimetallic Screws |
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Suitable for |
Single Screw, Twin Parallel Screw, Twin Conical Screw |
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Alloy Type |
Ni60 |
CoImonoy 56 |
CoImonoy 83 |
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Alloy Components |
Ni+Cr+Fe+Si |
Ni+Cr+Si+Fe |
Ni+Wc+Cr+C |
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Anti-Wearing Level |
★★★ |
★★★ |
★★★★ |
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Anti-Corrosion Level |
★★★★ |
★★★★ |
★★★★ |
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Alloy Thickness |
1~1.5mm |
1~1.5mm |
1~1.5mm |
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Hardness |
HRC 56-62 |
HRC 46~61 |
HRC 43-48 |
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Applied Glass Fiber |
Under 10% |
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Range of Workable Length |
Any length needed |
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Base Steel Vastly Used |
38CrMoAI(1.8509), 34CrAINi7(1.8550), 31CrMoV9(1.8519) |
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Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good |
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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.