- Tuo AI
- Live
- My Account
- Shopping Cart
- Inquiry Basket
- Contact Us
- Back to Top
OT40 Octagonal Tube Roll Forming Line
Table of Contents
- Definition
- Process and applications
- Reference parameters
- Conflicts and open items
- Boundaries
- Buyer FAQ
- References
1. Definition
OT40 is a 40-class octagonal tube cold roll forming line with servo punch and flying-saw cut. English names include OT40 octagonal tube roll forming / high-speed production line (the high-speed wording is a same-pack alternate scheme, not the Chinese OT40 baseline). It produces octagonal tube sections used as roller-shutter winding shafts and related tube applications per drawing.
Recommended baseline is the Chinese OT40 technical-parameter sheet (about 0.3–0.8 mm, 3–6 m/min, main about 7.5 kW×2). Do not copy OT60 motors, press tonnage, or thickness onto this page.
2. Process and applications
Recommended process wording:
- Decoiling (unpowered cantilever class on the Chinese sheet)
- Guide / level
- Servo feed punching (about 60 t four-column press)
- Roll forming (about 23 stands)
- Flying-saw cut-to-length
- Exit
Applications. 40-class octagonal tubes for shutter shafts and related structural / pole uses per customer drawings. Not ERW round/square tube welding; not a downpipe line; not an OT60 host.
3. Reference parameters (keep sources separate)
3.1 Recommended baseline (Chinese OT40 sheet)
| Item | Documented reference |
|---|---|
| Thickness | About 0.3–0.8 mm |
| Speed | About 3–6 m/min |
| Main / leveler / saw | About 7.5 kW×2 / 4 kW / 5.5 kW |
| Press | About 60 t four-column punch |
| Stands / shaft | About 23 / φ60 |
| Drive | Bidirectional chain (P≈31.75) |
| Coil hang width / decoiler | About 350 mm; decoiler about 3–5 t class |
| Envelope notes | Host about 10.8×0.7×1.2 m; line volume notes about 35×1.5×1.5 m on that sheet |
3.2 Same-pack high-speed English scheme — do not merge
| Item | That scheme’s reference |
|---|---|
| Speed / main | About 10–15 m/min; main about 11 kW class (Siemens noted on that doc) |
| Decoiler options | May list powered / hydraulic decoiler options — not default Chinese OT40 BOM |
4. Conflicts and open items
- 3–6 m/min vs 10–15 m/min — Chinese baseline vs high-speed English alternate. Label the scheme.
- Dual 7.5 kW vs single 11 kW — Different proposals; never average into one motor string.
- Market multi-size pages — Often advertise ~8–15 m/min with a single ~7.5 kW — industry orientation only; commercial numbers stay on the OT40 table above.
5. Boundaries (related machines)
- OT60 — Thicker GI, single ~11 kW main, ~63 t press, ~21 stands / φ70.
- ERW round / square tube — Welded tube family; different process.
- Downpipe / lockseam tube — Separate package; do not copy parameters.
- Shutter slat / guide hosts — Different products; octagon is the winding shaft, not the curtain.
6. Buyer FAQ
Same machine as 60 mm octagon?
No. Thickness, motors, press tonnage, stands, and shafts differ. Quote OT40 or OT60 by name.
Is 10–15 m/min the OT40 Chinese speed?
No. That band belongs to the same-pack high-speed English scheme. The Chinese OT40 baseline is about 3–6 m/min.
Does the Chinese sheet include a powered decoiler?
The recommended Chinese wording uses an unpowered cantilever decoiler class. Powered / hydraulic decoiler options belong to alternate schemes.
Is this a welded pipe mill?
No. It is a cold roll-formed octagonal tube line with punch and flying saw — not an ERW round/square mill.
Final ratings follow the confirmed technical proposal. Price and lead time are out of scope.
References
- OCTAGON-40 thematic FAQ (Chinese 3–6 m/min / 7.5 kW×2 baseline + high-speed English alternate)
- Industry context: Octagonal tube for shutter shafts (40/60/70 class)
- Related encyclopedia entries: OT60; 40 vs 60 selection