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312 Simple Ridge Cap vs Ribbed Punch Ridge Cap Lines
Table of Contents
1. Definition
Buyers often treat “ridge cap machine” as one SKU. Inside the ridge leaf there are at least two distinct hosts: a 312 simple ridge cap line (passive decoil → roll form → hydraulic cut) and a ribbed punch ridge line (rib roll + transverse rib punch + edge form + profile punch + cut). They share the product family name but not the station list, shaft, or power budget.
Industry guides similarly separate basic linear ridge formers from machines with integrated hydraulic rib punching — use that distinction when reading vendor ads.
2. Side-by-side comparison
| Item | 312 simple | Ribbed punch |
|---|---|---|
| Process | Uncoiler → feed → roll form → cut → table | Guide → rib roll → transverse punch → edge form → profile punch → cut |
| Speed | ~8–12 m/min | ~15 m/min (punch cadence) |
| Main drive | ~3 kW | Servo ~5.5 kW |
| Hydraulic | Shear station ~3 kW | Station ~11 kW (punch + cut) |
| Rolls / shaft | ~11 rolls; ~φ60 (45#) | ~12 passes; ~φ70 (40Cr QT) |
| Thickness | ~0.3–0.5 mm; yield strength ~245–350 MPa cited | ~0.4–0.6 mm; width ~600 mm |
| Decoiler note | ~5 t passive; expand width ~1250 mm | ~3 t passive loading rack |
| Envelope (312) | ~6200×1100×1500 mm; ~3200 kg cited | Confirm on named ribbed proposal |
Conflict call-out: glazed-tile technical side sheets (pitch adjustable, working ~2–3 m/min) are not 312 and not ribbed punch. “One-out-of-three” ridge quotes without full sections stay blocked.
3. When to choose which
- 312 simple — plain ridge covers; no transverse emboss punch package
- Ribbed punch — drawings that show reinforcement ribs / punched pattern on the cap
- Both serve color-steel roof accessory production; neither is a trapezoid main line
4. Boundaries
- Do not publish ribbed punch as “312 but faster”
- Do not fill ribbed power from the 312 3 kW figure
- Do not answer trapezoid or glazed-tile RFQs with either ridge table
- Do not invent a merged thickness band across the two hosts
5. Inquiry checklist
- Finished ridge drawing: plain vs ribbed / punched pattern
- Thickness and yield strength for the chosen host
- Hydraulic / punch package scope
- Confirm decoiler capacity matches coil plan
6. Buyer FAQ
Same leaf means same machine?
No. Same catalog leaf can hold multiple configurations. Answer by process stages and the named parameter sheet.
Why is ribbed “faster” but heavier on hydraulics?
Rated ~15 m/min includes servo-managed punch stops; hydraulic ~11 kW serves punch banks plus cut — not a free upgrade of the 312 shear package.
Which thickness wins if both are offered?
Use the thickness band on the configuration you ordered. Mixing 0.3–0.5 with 0.4–0.6 without labeling causes coil purchase errors.
Is a glazed-tile side sheet a third ridge host?
Treat glazed-tile pitch-adjustable sheets as a separate product leaf — not a 312 or ribbed-punch substitute.
Ratings follow the confirmed technical proposal. Commercial quotes and lead time are out of scope.