Complete set for XPS foamed board production lines. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
XPS foaming depends on dissolving the blowing agent into the melt under pressure and then letting it expand in a controlled way. The screw has to build that pressure smoothly and the barrel has to hold temperature precisely — together, not separately.
We build complete sets for XPS board lines, nitrided or bimetallic, sized to your line's output.
Quote within one business day. We reply with a matching proposal, delivery date and price — no generic catalogue PDF.
Standard range shown. Every dimension below can be changed to your machine, resin and output — custom manufacturing is our daily business.
| Screw diameter | Ø65–300 mm |
|---|---|
| L/D ratio | Long L/D for foaming |
| Material | 38CrMoAlA nitrided / bimetallic |
| Blowing agent | CO₂ or HFC — specify which |
| Barrel | Temperature-control design |
| Output | Sized to your line |
| Lead time | 40–55 days |
The honest answer depends on your resin, not on price. Here is how we advise customers.
| Gas Nitrided (38CrMoAlA) | Bimetallic Alloy Lining | |
|---|---|---|
| Best for | Unfilled PE, PP, PS, ABS, virgin PVC | Glass-filled, mineral-filled, recycled, corrosive |
| Surface hardness | HV 900–1020, depth 0.45–0.7 mm | Alloy layer 2–5 mm, metallurgically bonded |
| Typical service life | Baseline | 3–5× baseline on abrasive resin |
| Cost | Lower | Higher, recovered through fewer stoppages |
| Certification | MTC with heat number | MTC + hardness records, third-party on request |
Tell us which — the pressure profile and screw design differ. We design for the agent you actually use.
We size the screw to your target kg/h and board width. Give us both and we calculate it.
Nitrided for standard virgin PS. Bimetallic if you run recycle content or mineral additives.
Big-format XPS screw sets, max machining diameter Ø300 mm in-house.
View Details →Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
