C&U Combined Partition Stud-and-Track Roll Forming Line

1. Definition

A C&U combined partition (stud-and-track) roll forming line makes both C wall studs and U top/bottom tracks on one light-gauge mill by adjusting rib-related rolls / spacers (or a dual-line design). Default tooling is often C; U changeover is intentional, not accidental.

This is the drywall / light-keel path — not a structural C/Z/U purlin mill.

2. Typical process flow

1. Decoil
2. Level / feed
3. Punch (optional, per drawing)
4. Roll form C or U after changeover
5. Hydraulic cut-to-length
6. Exit

3. Technical parameters (recommended English class)

4. Other configuration tiers

• Stud-and-track variant — speed about 10–25 m/min; thickness about 0.4–0.7 mm; about 11 stands on φ50; hydraulic about 3 kW; changeover about 15–20 min class
• Heavy light-keel CU — main about 15 kW, shaft about φ80, thickness up to about 2.5 mm, host about 9500 × 1800 × 1400 mm / ~7.8 t — separate inquiry; do not paste onto the 5.5 kW table

Market CU / stud-track pages commonly cite about 0.3–1.0 mm — orientation only.

5. Related machines

• Dedicated wall-stud-only or track-only mills
• Structural U channel / C purlin — thicker section-steel family
• Ceiling T-grid — suspended ceiling, not partition studs
• Villa LGS frame lines — different profile set and usually thicker / more automation

6. Applications

Gypsum partition factories that need both C studs and U tracks and prefer one changeable mill (or dual-line output).

7. Buyer FAQ

Same as structural U channel?

No. See the structural U vs drywall track encyclopedia comparison.

How long to switch C ↔ U?

On the stud-and-track variant, about 15–20 minutes class is documented — confirm on the proposal.

Can I use 15 kW / 2.5 mm as the normal quote?

Only if the heavy light-keel CU tier is ordered. The recommended English class stays at about 5.5 kW and 0.5–1.0 mm.