Jobsite
K-span is a site machine
Coil is formed flat, cut to developed length, then curved and seamed into a shell.
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Solution Library / Roof & Wall Systems
Arch Roof & Warehouse Building Solution
An “arch roof” search usually means one of four hosts: a jobsite K-span that forms, curves and sews a beamless hall; a shop arch-beam mill; a corrugated line that cuts and bends an arc; or a small curver next to standing seam. The example below is the K-span class.
Who it's for
Builders of grain, storage and light industrial halls who want a curved shell, and shops that form arch beams or radius corrugated sheets.
Shop beam
Last stand makes the arch
A shop mill with Ø110 last-pass curving is a different host.
Sheet
Corrugated + post-form bend
A trapezoid mill plus a cut-and-bend unit is a third quotation.
How to choose a line
- Beamless arched hall, coil formed on site -> K-span / MIC240-class (example below)
- Shop-formed arch beam, about 30 m span class -> arch-beam mill (0.8–1.5 mm, 1200 mm infeed, 10 stands, last pass Ø110, 10 m/min, 380 V / 50 Hz on that quotation)
- Corrugated sheet with an arc cut after forming -> corrugated mill plus cut-and-bend (18 stands, 7.5 kW, 0–20 m/min, 0.2–0.8 mm on that quotation)
- Standing-seam panels that need a radius -> standing-seam solution plus motor curver
Example specification
One delivered example. Final numbers follow your quotation.
| Width path | 914 mm coil → 610 mm coverage class |
|---|---|
| Thickness | 0.6–1.5 mm on that wiki |
| Speeds (three bands) | Flat ~15 m/min; arch ~13 m/min; seam ~16 m/min |
| Motors | Total ~19.7 kW (main ~7.5; curving ~3.0 + 1.5×2; shear ~4.0; conical ~1.1+1.1) |
Line walkthrough
1Decoil
Decoil
Jobsite coil
- Jobsite coil
2Form flat
Form flat
~15 m/min band
- ~15 m/min band
3Cut length
Cut length
Footer to footer
- Footer to footer
4Curve
Curve
~13 m/min band
- ~13 m/min band
5Seam
Seam
~16 m/min band
- ~16 m/min band
Equipment matching
| Step | Module | Guidance | Related |
|---|---|---|---|
| Beamless hall | K-span / MIC240 class | Three speeds + ~19.7 kW split on the wiki | Large-span arch beam |
| Shop arch beam | 10-stand mill, last pass Ø110 | 10 m/min; 30 m span class; 380 V / 50 Hz | 10-stand mill, last pass Ø110 |
| Arc in a corrugated sheet | 18-stand mill + cut-and-bend | 7.5 kW; 0–20 m/min; 0.2–0.8 mm | 18-stand mill + cut-and-bend |
| Radius standing seam | Standing-seam mill + curver | Standing-seam solution | Standing-seam mill + curver |
What's included
Four-way choice, one K-span example with three speed bands, shop-beam and corrugated as matching rows, and a quote checklist.
What to send for a quote
- Jobsite K-span vs shop arch beam vs corrugated cut-and-bend vs standing-seam radius
- Span, eave height and whether the hall is beamless
- Coil width and thickness window
- Site voltage / frequency (shop beam example is 380 V / 50 Hz)
- Whether seaming is on the same host or a separate closer
- Foundation / trailer / power available on the jobsite
Check before you quote
Speeds
Keep three speed bands
Flat, arch and seam on the MIC240 wiki are three numbers, not one average.
Shop
Ø110 last pass is a shop mill
That 10 m/min arch-beam quotation is a shop mill, separate from the K-span host.
Sheet
Cut-and-bend is corrugated
The 7.5 kW / 0–20 m/min quotation is a sheet mill, separate from a beamless hall.
FAQ
Can one mill do K-span and shop arch beam?
They are different hosts. Send the hall type so engineering opens the matching quotation.
Why three speeds on MIC240?
Forming flat, curving and seaming are three motions. The wiki lists ~15 / ~13 / ~16 m/min.
How are price and lead time quoted?
Send the quote checklist. Commercial terms come back on the offer.
Q&A for this solution
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