EJS: Let's get started


A lot of customers are enjoying their holidays in August.

EJS factory is running every day, to fulfill the promises one after another.

When you begin to work with us, you'll have the same signification like our other customers.

Please contact us to get more done.

^^^^^^^^^ To know more about EJS, please continue:

To make your screw barrel business Easy, Joy with a big Success.

Emphasize details, Pursue Excellence
Keep Communicating, Keep Focusing, Keep Cooperating, Keep Improving,
We stand behind the parts we produce and provide long term support for our products.

EJS is outstanding among hundreds of screw barrel manufacturers in China.

Right now our happy customers are all over the world, from Europe, Middle East, Asia to America in different fields.

If quality is critical, you can count on EJS.
We have the energy and capability to meet your needs, whatever screws barrels youre looking for and where you may be.

We look forward to working with you now and forever.

Bimetallic screw barrels are often produced at our factory:

Bimetallic Barrels 
For some plastic application with fillers and fibers, the barrel and screw need to be well protected. Bimetallic barrel has a bimetallic layer which providing a better wear protection, corrosion protection and serving a longer time.

We have four kinds of alloy for different types of wear and corrosion resistance: 

Alloy Type EJS01 Alloy EJS02 Alloy EJS03 Alloy EJS04 Alloy
Alloy Components Fe+Ni+Cr+B Ni+Cr+Co+B Ni+Cr+Co+V+B Ni+Wc+Cr+B
Wearing Resistance ★★★ ★★ ★★★ ★★★★
Corrosion Resistance ★★ ★★★ ★★★ ★★★
Alloy Thickness 2-3mm 2-3mm 2-3mm 2-3mm
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
Base Steel Vastly Used 40Cr
Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good

 Bimetallic Screws

We are able to make all of our screws hardfacing by PTA welding.  
In addition to the quite common Ni60, we also offer Colmonoy 56, Colmonoy 83 or other Tungsten added alloy for different application needs.  
Suitable for Single Screw, Twin Parallel Screw, Twin Conical Screw
Alloy Type Ni60 Colmonoy 56 Colmonoy 83
Alloy Components Ni+Cr+Fe+Si Ni+Cr+Si+Fe Ni+Wc+Cr+C
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
Base Steel Vastly Used 38CrMoAl(1.8509), 34CrAlNi7(1.8550), 31CrMoV9(1.8519), 42CrMo(AISI4140)
Mark in the list: ★★★★ Excellent; ★★★ Very Good; ★★Good