If you’ve been around metal building lines as long as I have, you already know why the Automatic C/Z purlin Roll Forming Machine keeps surfacing in budget meetings. The market’s pivoted hard toward faster changeovers, servo punching, and traceable quality. In fact, many customers say the pitch is simple: one machine, both C and Z, minimal downtime. Hard to argue with that.
Originating from Room B1106, Zhongliang Plaza, No.345 Youyi North Street, Xinhua District, Shijiazhuang, Hebei, the Automatic C/Z purlin Roll Forming Machine here is tuned for real plant life—dust, coil quirks, night shifts, the lot. It flips C↔Z via PLC recipes, not a wrench set. To be honest, that’s where the ROI lives.
| Profiles | C: web 80–300 mm, flange 35–80 mm; Z: web 120–300 mm, flange 35–80 mm; lip 10–25 mm (≈) |
| Material | Galvanized steel (ASTM A653, Z275–Z350), Q235/Q355, 1.5–3.0 mm (typ.); yield up to 550 MPa |
| Speed | ≈12–18 m/min forming (real-world use may vary with punching load) |
| Changeover | Auto C↔Z via PLC; typical ≤3–5 min recipe switch |
| Tolerance | Dimensional ±0.5 mm; hole pitch ±0.3 mm (ref. EN 10162 methods) |
| Line Core | Decoiler → Leveling → Servo punching → Roll forming → Straightening → Flying shear → Stacker |
| Controls | PLC + HMI (multi-language), encoder feedback, recipe library for size sets |
| Rollers & Drive | GCr15 rollers, HRC 58–62; gear-box or chain drive; 15–30 kW total power (≈) |
Materials: GI coils per ASTM A653/A653M; incoming QC checks thickness (ultrasonic), zinc mass, yield/TS (ISO 6892-1 lab if needed). Methods: CNC-machined stands, precision roller profiling, servo punches with quick-change dies (round, slot, oval).
Testing standards and data: rollers hardness HRC 58–62 (Rockwell), 8-hour no-load run, 2-hour full-load trial; profile geometry verified by EN 10162 gauges; burr ≤0.2 mm typical; electrical safety per CE Machinery Directive. Service life: frames ≈15+ years; rollers 5–8 years before re-polish, with weekly lubrication and quarterly alignment checks.
| Vendor | Drive & Build | Changeover | Punching | Warranty | Certs |
|---|---|---|---|---|---|
| YINGYEE Machinery (Shijiazhuang, Hebei) | Gear/chain, GCr15 rollers | Full auto C↔Z (≈3–5 min) | Servo, quick-change dies | 12–24 months (typ.) | ISO 9001, CE-ready |
| Vendor A (generic) | Chain only, mixed roller steels | Manual spacers (15–30 min) | Hydraulic, fixed die set | 12 months | Basic CE panel |
| Vendor B (semi-auto) | Gear drive, good machining | Semi-auto (8–12 min) | Servo punch, limited patterns | 18 months | ISO 9001 |
Hole patterns (round/slot/oval), coil cars (manual or hydraulic), flying cut vs. stop-cut, 380V 50Hz or 480V 60Hz, HMI language packs, extra web/flange ranges, and profile libraries. I guess the sweet spot is servo punching + flying shear if you run mixed SKUs all day.
“Switching from C200 to Z220 in under four minutes felt unreal the first week,” one foreman told me. Another plant manager mentioned scrap fell ≈1.2% after dialing in EN 10162 gauges. Not scientific, but it tracks with what I’ve seen: the Automatic C/Z purlin Roll Forming Machine pays for itself in uptime and fewer second-ops.
Preventive maintenance every 250 hours (lubrication, fastener torque, encoder cleaning). Annual roller re-alignment, check cut-saw parallelism, replace wear pads. With decent care, the Automatic C/Z purlin Roll Forming Machine should comfortably run 10–15 years in 2-shift operations.
