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.
Coming together is a beginning, working together is a progress.
Do not be shy to talk to a new supplier, especially EJS, who has been in this business for almost 30 years. EJS is new to you, however the factory has been serving hundreds of customers all over the world, from big players in the field to the new startups. Most of them keep working with us, growing themselves together with us all these years.
If quality is critical to you, EJS is your right go-to factory.
If price is your priority, you may have to work with others.
If lead-time is on the top of your list, you please discuss with our people. We will do the best to coordinate.
Please contact us to get more done.
^^^^^^^^^ To know more about EJS, please continue:
EJS MISSION:
To make your screw barrel business Easy, Joy with a big Success.
EJS PHYLOSOPHY:
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 you’re 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 | |||
