Company · Nanjing, China
About Kerke Extrusion: 2,000+ lines built in Nanjing since 2009
About Kerke extrusion in one line: we build co-rotating twin screw extruders, two-stage lines and pelletizing systems, machine the wear parts ourselves, and prove the output on your material before the line ships.
Quick answer
Kerke Extrusion Equipment is a twin screw extruder manufacturer in Nanjing, China, founded in 2009. We have delivered 2,000+ extrusion lines to 70+ countries, machine screw elements and barrels in-house, run material trials in 3–7 days, and dispatch standard spare parts in 24–48 hours. Company registration, factory address and export documents are on the certificates page.
About Kerke extrusion in one paragraph
A machine builder, not a trading company. Screw elements, shafts, barrels and dies are machined in our own works; gearboxes are assembled and run in for 24 hours before they meet a screw; every line is tested with material, not only dry-run, and the test video and pellet sample travel with the machine.
That structure decides what we are good at. When a filler masterbatch line has to hold 88% CaCO3 without surging, or a PET line has to keep IV through the die, the answer is usually a screw element, a barrel liner or a feeder setting — all of which we can change without waiting for a third party.
What we build
Machines
Eleven families, from the KTE-16 lab unit to the KTE-135D and the KTE-T triple screw.
Lines by application
32 material pages: filler and colour masterbatch, cable compound, engineering plastics, recycling, food and biodegradable.
Projects
Cases, turnkey plant scope and plant footage — the evidence behind the specifications.
News & exhibitions
Six shows in 2025 — Dubai, Shenzhen, Riyadh, Ho Chi Minh City, Tokyo and Istanbul. One report per hall.
Selection notes
Six articles on sizing, pelletizing methods, startup, troubleshooting, maintenance and energy.
How a line gets specified
- Material. Resin, filler or fibre, loading percentage, additive package. This decides screw geometry before anything else.
- Output and pellet standard. kg/h at the die, pellet shape, dust limit, bulk density.
- Configuration. One-stage or two-stage, L/D, torque class, feeding, pelletizing method, downstream.
- Trial. 25–50 kg on the closest lab machine; the measured parameters become the commissioning baseline.
Only after step four do we put a guaranteed output figure in a contract. The reasoning behind the sequence is set out in the selection guide.
What we do not do
We do not sell used machinery, do not build injection moulding machines, and do not supply resin, filler or masterbatch. If your project needs one of those, we will say so at quotation stage rather than quote around it — that is the short version of what the about kerke extrusion section above describes as a machine builder. Capacity figures on this site are reference ranges measured at standard screw speed — see the terms of sale for how the guaranteed figure is fixed.
Where the lines run
Filler masterbatch in Bangladesh, India, Vietnam and Egypt; PET flake recycling in Egypt, Turkey and Uzbekistan; black masterbatch in Poland, Nigeria and Mexico; cable compound in the Middle East and North Africa; WPC and wood-plastic profiles in Vietnam and Indonesia; lab and pilot lines in Europe and Korea. The case studies record country, material, configuration and measured output for each published project.
Next step
Two pages follow from here: the factory for how the machine is built, and service for what happens after it lands. For a quotation, send the material and the target output — the form takes two minutes, and the reply includes the closest configuration we have already delivered.
Background on the machine class itself: twin-screw extruder.
FAQ
Is Kerke the manufacturer or a trading company?
The manufacturer. Machines are built in one Nanjing works: screws, barrels and liners machined in-house, gearboxes assembled and run in, every line wet-run tested before shipment.
How do I reach sales versus after-sales service?
Both start at kerkepm@gmail.com or WhatsApp +86 177 3333 2876 - sales enquiries go to the engineering team, service calls route to the support desk with a 2-hour response on working days.
What does the group include?
Kerke Extrusion Equipment for the machines, with partner GCMT for the masterbatch operation - which is why application advice comes from people who run the material too.