Alloy-lined barrel bore for recycled, filled and corrosive materials. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
Centrifugal casting bonds a 2–5 mm alloy layer to the barrel body metallurgically, so it cannot flake or peel the way a sprayed coating can. The bore is then finish bored and honed to size.
This is the barrel we recommend whenever the failure mode is abrasion or corrosion rather than simple mechanical wear.
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.
| Alloy layer | 2–5 mm, centrifugally cast |
|---|---|
| Alloy type | Fe-based / Ni-based to resin |
| Bore diameter | Ø20–300 mm |
| Bond | Metallurgical, no flaking |
| Bore finish | Honed, Ra 0.4 |
| Typical life gain | 3–5× vs nitrided |
| Lead time | 30–45 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 |
The alloy is bonded metallurgically to the body during casting, not sprayed on afterwards. It does not peel under load.
Tell us the resin and filler. Fe-based alloys suit most abrasive applications; Ni-based suits corrosive ones.
Yes, MTC with heat number and hardness readings. Third-party inspection available.
Custom flanged barrel for extrusion and injection machines.
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Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
