Mix
Start from the year-one mix
How often you switch C vs Z decides dedicated vs interchange.
- Tuo AI
- Live
- My Account
- Shopping Cart
- Inquiry Basket
- Contact Us
- Back to Top
Solution Library / Purlins & Sections
Roof & Wall Purlin System Solution
Secondary steel for roofs and walls is a section family first: dedicated C, dedicated Z, C/Z interchange, hat, CUZ, or a hydraulic punch/cut package on a C/Z host. The example below is automatic C/Z interchange. Sigma and cold-formed I send the drawing for a custom file.
Who it's for
PEB plants and purlin shops that need C and Z in one year, or a dedicated hat / CUZ host, and want punch and cut called out as hydraulic packages. The main drive on the interchange example is the servo.
Hat
Hat is a solar / strut host
24-pass PV hat and compact twin hat+U are two quotations.
Hydraulics
Punch and cut are packages
On the interchange example the punch/cut motor is 15 kW; the servo is 42 kW.
How to choose a line
- Both C and Z, size change on the HMI -> automatic C/Z interchange (example below)
- C only or Z only -> dedicated C (~15 kW, 14 stands, Φ80, form ~0–18 / with punch-cut ~0–12 m/min on that quotation) or dedicated Z (Automatic ~18.5 kW, 17 stands on that quotation; another Z quotation lists ~15 kW)
- PV hat channel, 24-pass mill -> photovoltaic hat (24 passes Φ70, 22+5.5 kW, 380 V / 60 Hz, servo tracking shear on that quotation)
- Compact twin hat + U, single-phase plant -> 220 V / 60 Hz / 1φ; 12/10 stands; 5.5+5.5 kW each on that quotation
- Sigma web or cold-formed I -> send the PDF. Sigma guide language is 18–22 stands and 1.0–2.5 mm; no named kW is published for that drawing. Hot-rolled I-beam is mill steel, not this family
- Light-gauge stud and track -> keel / LGS solution, a different host
Example specification
One delivered example. Final numbers follow your quotation.
| Host | C/Z interchange, 20 stands, servo changeover |
|---|---|
| Strip | 1–3.2 mm |
| Speed | High 32 m/min; normal 12–18 m/min |
| Motors | Servo 42 kW; punch/cut 15 kW |
| Power | 380 V / 50 Hz |
Line walkthrough
1Decoil
Decoil
Coil class on quote
- Coil class on quote
2Level / feed
Level / feed
Into punch
- Into punch
3Punch
Punch
15 kW package
- 15 kW package
4Form
Form
20-stand C/Z
- 20-stand C/Z
5Cut
Cut
Post-cut on quote
- Post-cut on quote
Equipment matching
| Step | Module | Guidance | Related |
|---|---|---|---|
| C and Z mix | Interchange | 20 stands / 42 kW servo / 32 & 12–18 m/min | C/Z purlin forming |
| C only | Dedicated C | ~15 kW / 14 stands / Φ80 | Dedicated C |
| Hat (PV) | 24-pass hat | 22+5.5 kW / 380 V / 60 Hz | 24-pass hat |
| Hat + U compact | Twin mill | 220 V / 60 Hz / 1φ / 5.5+5.5 kW each | Twin mill |
| CUZ size change | C/U/Z host | 1–3 mm; C/U 80–300, Z 120–300; 220 V / 60 Hz; 6 t hyd decoiler | C/U/Z host |
| Sigma / I | Custom from drawing | Send PDF; hot-rolled I is another industry | Custom from drawing |
What's included
Year-one mix, one interchange example, hat and CUZ as matching rows, hydraulic punch/cut as a package, and a quote checklist. Sigma and I wait for the drawing.
What to send for a quote
- Year-one mix: %C vs %Z vs hat vs CUZ, and how often you change over
- Profile drawings (web / flange / lip) plus hole map
- Coil: thickness window, yield, GI vs HR, max strip width
- Site voltage / frequency / phase (example interchange 380 V / 50 Hz; compact hat is 220 V / 1φ)
- Pre-cut vs post-cut; punch before or after forming
- Decoiler class and outfeed (table vs stacker)
- If the drawing is sigma or I: send the PDF rather than a C/Z size
Check before you quote
kW
Servo and punch are two motors
On the interchange example 42 kW is the servo; 15 kW is punch/cut.
Hat
Two hat hosts
24-pass PV hat (380 V / 60 Hz) and compact twin hat+U (220 V / 1φ) are different quotations.
I
Hot-rolled I is mill steel
A cold-formed I drawing can be quoted from PDF; a rolled I-beam is another mill.
FAQ
Is “hydraulic purlin” a different mill?
On C/Z hosts, hydraulic usually means the punch and cut packages. The main drive on the interchange example is the 42 kW servo.
Can I put dedicated C speed on the interchange mill?
Each quotation carries its own speed and kW. Dedicated C, dedicated Z and interchange stay on their quotations.
How are price and lead time quoted?
Send the quote checklist. Commercial terms come back on the offer.
Q&A for this solution
No questions yet