Product Description

Extruder Barrels

EJS INDUSTRY is a professional manufacturer of extruder barrels and is the number one exporter of extruder barrels in all these years in our area.

Extruder barrels, including twin-screw extruder barrel, are produced at our workshops each day.

Every day, we have extruder barrels on the milling/drilling/grinding/polishing machine, otherwise they are in nitriding furnace or in the centrifugal casting machine for bimetallic process, or they are on the inspection table, lining up for packaging or ready to leave the warehouse.

Each day, we have extruder barrels leaving us for customers, by air or by sea. 30% of extruder barrels go export, some will go for domestic machine customers first and then go abroad.

To make the customers work easier, besides extruder barrels, we EJS also produce feed throat and flanges to make an assembly before packaging. In this case, a leakage test will be made to assure the quality. Our customers are very happy about this job and order more and more assemblies from us. As a manufacturer of screw and barrel, it’s our mission to make our customers work Easier with Joys and Success!

Materials recommended for extruder barrels:

38CrMoAlA,

34CrAlNi7

31CrMoV9

SS304

42CrMo

40Cr

Hastelloy 276

Surface treatment recommended for extruder barrels:

Nitriding;

EJS01 bimetallic treatment;

EJS04 bimetallic treatment.

What sizes of extruder barrels have EJS made in the past?

Extruder Barrel Parallel Twin Cylinder: ￠45/2-￠250/2， 67/22， 68/25，114/32， 92/28， 92/32， 114/32， 90/16， 90/22， CM80，40KK, 75/32, 81/17, CM58

Extruder Barrel Conical Barrel:

24/52, 35/xx, 45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 68/147, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188, 105/216, 110/220

Single screw extruder machine extruder barrel: Ø15mm~Ø500mm

Rubber Barrel:￠25-￠500mm

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.