High-output conical twin screw barrel for SPC rigid-core and LVT flooring compound. Machined in our own Henan workshop — to your drawing, or reverse-engineered from your worn parts.
SPC flooring is the fastest-growing rigid PVC application — and one of the most abrasive, with 60–80% calcium carbonate in the core compound. Our flooring package pairs a bimetallic barrel with a high-output screw profile that keeps the melt stable across fast, wide lines.
Built for SPC rigid core, LVT backing and WPC flooring extruders in 65/132 and 80/156 classes. Tell us your line width, output and CaCO₃ loading and we quote the right wear package.
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.
| Models | SJSZ 65/132, 80/156 |
|---|---|
| Barrel | Bimetallic lining 2–5 mm (standard for SPC) |
| Screw | High-output profile, wear-protected lands |
| Compound | 60–80% CaCO₃ rigid core |
| Expected life | 3–5× nitrided on SPC compound |
| 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 core compound is up to 80% calcium carbonate — an abrasive slurry at melt temperature. A nitrided bore can oval within months; the bimetallic alloy lining is the industry answer.
Usually yes: the barrel must become bimetallic and the screw profile re-cut for the compound. Send your extruder model and current set dimensions and we check compatibility.
Depends on line and compound, but properly matched sets commonly support the output range these lines are sold at — tell us your target and we confirm feasibility before quoting.
Matched screw and barrel for SJSZ 51/105 conical twin extruders.
View Details →
Large-format conical twin set for big-diameter PVC pipe lines.
View Details →
Send your machine model, drawing or worn sample — we reply with a matching proposal and quotation within one business day.
