Twin-bore barrel for conical and parallel twin machines. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Two bores, both alloy-lined, with the centre distance and taper held to specification. This is the hardest barrel we make and the one where measurement records matter most.
For conical and parallel twin machines running filled or recycled PVC.
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.
| Bores | Twin, parallel or conical |
|---|---|
| Alloy lining | 2–5 mm centrifugal |
| Max diameter | Ø300 mm |
| Centre distance | Machined and verified to drawing |
| Bore finish | Honed |
| Inspection | Centre distance + roundness recorded |
| Lead time | 45–60 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 |
Centre distance, taper and roundness are measured and recorded; the inspection sheet ships with the barrel.
Both. Tell us which and send the geometry or the worn barrel.
For filled or recycled PVC, yes — twin barrels are expensive and lining roughly triples the interval between replacements.
Alloy-lined barrel bore for recycled, filled and corrosive materials.
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Custom flanged barrel for extrusion and injection machines.
View Details →Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
