312 Ridge Cap Tile Roll Forming Line

1. Definition

A 312 ridge cap tile roll forming line produces metal ridge caps that cover the peak where two roof slopes meet. English names include 312 ridge cap roll forming line and ridge cap tile molding equipment. The product replaces older “ridge cushion + cover” laying methods with a formed metal ridge section; crown / side appearance follows the source description and drawing.

Recommended baseline is the English 312 quotation document (uncoil → feed → roll form → cut). It is not the ribbed / punched ridge-cap process line, not a trapezoid roof host, and not a glazed-tile step-press machine — even when neighboring glazed-tile parameter sheets sit in the same commercial folder.

Industry ridge-cap articles explain the same job: seal the ridge line against rain and snow and finish the roof appearance, usually matched to color roof sheets. That application language is shared; the numeric baseline below stays with the 312 quotation.

2. Process and applications

Documented process:

1. Uncoiler (passive; pulled by the forming mill)
2. Feeding
3. Roll forming
4. Hydraulic cutting
5. Unpowered roller exit table

Uncoiler notes: load about 5000 kg, width about 1250 mm, ID about 450–550 mm. Hydraulic shear uses a gear-pump drive; blades Cr12 quenched; hydraulic oil grade written as 46#; hydraulic station about 3 kW.

Applications. Color-steel roof 312 ridge-cap production for industrial plants, warehouses, and residential / villa metal roofs that need a formed ridge cover matched to the main roof sheet. Not for punching ribbed ridge geometry that requires post-form rib punch stations.

3. Reference parameters (312 quotation baseline)

4. Conflicts and open items

• Ribbed-punch ridge line — Servo about 5.5 kW, hydraulic about 11 kW, about 12 passes, shaft about ø70, thickness about 0.4–0.6 mm, speed about 15 m/min. Different process; do not answer 312 inquiries with punch-line numbers.
• Glazed-tile side sheet — May list forming about 8–10 m/min and working about 2–3 m/min with adjustable pitch. Side evidence only; not the 312 unique speed answer.
• Yield strength wording — 312 baseline about 245–350 MPa; glazed side sheets may write about 195–350 MPa. Keep sources named.
• “One-out-of-three” ridge quotes — If incomplete, leave blocked; do not invent missing fields into this baseline.

5. Boundaries (related machines)

• Ribbed ridge-cap punch line — Rib press, transverse punch, edge forming, punch-cut sequence.
• Trapezoidal / IBR roof hosts — Main roof sheets, not ridge accessories.
• Glazed / step-tile roof lines — Decorative tile geometry with step press.
• Ridge auxiliary / flashing tools — May appear in related encyclopedia titles; confirm separately.

6. Buyer FAQ

Is 312 the same as the ribbed ridge punch machine?

No. 312 is the English quotation style without the ribbed punch process stack. Ribbed punch uses higher hydraulic power and a different station sequence.

Is 1250 mm the ridge-cap finished width?

No. About 1250 mm is decoiler coil-width capability. Finished ridge geometry follows the 312 drawing.

Can I use glazed-tile working speed 2–3 m/min for this machine?

No. That working band belongs to glazed step-tile side evidence. The 312 baseline forming speed is about 8–12 m/min.

Does every ridge inquiry need this mill?

Only when the drawing is a 312-style ridge cap without the ribbed punch process. Match the accessory drawing first.