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Ceiling Main T and Cross T Grid Roll Forming Line
Table of Contents
- Definition
- Typical process flow
- Technical parameters
- Main T vs Cross T
- Applications
- Related machines
- Buyer FAQ
- References
1. Definition
A ceiling Main T / Cross T grid roll forming line produces suspended-ceiling T-bar members — the load-bearing Main Tee and interlocking Cross Tee. It is not a partition C/U stud-track line and not an angle-bead press line.
Complete commercial ceiling kits often add a separate wall angle machine; do not merge wall-angle ratings into the T-mill table.
2. Typical process flow
- Decoil (single or dual-head)
- Level / feed
- Roll form the T section
- Punch (slots / hooks / logos per drawing)
- Cut-to-length (tracking punch-cut on automatic packages)
- Exit
Some 24–38 class documents list punch after length measure and before hydraulic shear — order follows the named scheme.
3. Technical parameters
Two documented tiers exist. Do not collapse them into one fake “standard.”
| Item | Full-automatic Main T reference | 24–38 Main T reference |
|---|---|---|
| Forming speed | About 0–30 m/min (other notes ~16 m/min class) | About 10–20 m/min (tracking punch-cut up to ~20) |
| Main / hydraulic | About 4 kW / 7.5 kW | About 5.5 kW / 5.5 kW |
| Stations / shaft | About 16 stands; shaft about φ40 mm | Same class on common packages |
| Profile example | Per drawing | About 24 mm face × 38 mm height × about 0.3 mm |
| Host envelope (24–38) | — | About 6500 × 850 × 1500 mm |
Market T-grid lines commonly advertise about 0.2–0.6 mm GI/PPGI and roughly 20–45 m/min bands — industry context only.
4. Main T vs Cross T
Main T and Cross T are often quoted as two machines or a matched set under the same ceiling-grid family. Lengths and connector punch maps differ (industry examples: Main ~3600 mm; Cross ~600 / 1200 mm). Ask for both drawings when buying a full grid package.
5. Applications
- Aluminum / gypsum suspended ceiling grids for commercial interiors
- Residential and office lay-in tile systems
- Matched Main + Cross (+ optional wall angle) kits for complete T-grid supply
6. Related machines
- Partition C/U / stud-track — different thickness and duty
- Furring / hat channel — secondary ceiling members, not T-bar
- Wall angle / perimeter — confirm as accessory, not T-mill ratings
- Angle bead / net wall angle — plaster corner bead, not ceiling T
7. Buyer FAQ
Is 30 m/min the only speed?
No. Full-automatic text cites about 0–30 m/min; 24–38 cites about 10–20 m/min. Name the tier.
One machine for Main and Cross?
Usually separate mills or a paired set. Confirm whether the quote is Main-only, Cross-only, or a three-machine kit with wall angle.
Is this the same as a partition C/U line?
No. T-grid is thin suspended-ceiling barstock with connector punch maps — not structural or partition stud/track duty.
Does the T-mill include wall angle ratings?
Not automatically. Wall angle is often a third machine in a full kit — keep its parameters off the Main/Cross table.
Final ratings follow the confirmed technical proposal for the named Main/Cross package. Price and lead time are out of scope.
References
- Technical FAQ for Ceiling Main/Cross T Grid Roll Forming Line
- FAQ — multi-tier speed: High-speed ceiling T-bar line example
- FAQ — Main vs Cross set: Full-set T-grid ceiling production line (Main / Cross / wall angle)
- FAQ — not partition C/U: Ceiling T-bar making machine overview
- FAQ — wall angle separate: Main runner / Cross Tee making machine