Big-format XPS screw sets, max machining diameter Ø300 mm in-house. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Large-format XPS sets are where our capability matters: our in-house machining limit is Ø300 mm and our furnaces handle the full length. We do not subcontract that work out.
Supplied as a matched set with the barrel, nitrided or bimetallic, sized to your board line.
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.
| Max diameter | Ø300 mm, machined in-house |
|---|---|
| Supplied as | Screw + matched barrel |
| Material | 38CrMoAlA nitrided / bimetallic |
| Furnaces | 4 nitriding + 4 alloy furnaces |
| Application | Large XPS board lines |
| Inspection | Dimensional records supplied |
| Lead time | 50–65 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 |
Yes — that is our stated in-house machining limit. Above it we decline the job rather than pass it to a workshop we cannot vouch for.
Yes, sets are supplied together so the clearance is ours to guarantee.
Typically 50–65 days. Large forgings and furnace capacity set the pace — we confirm a date with the order, not an estimate.
Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
