On-Site K-Span Arch Building Process Flow

1. Process purpose

Build self-supporting beamless arch shells by forming, cutting, curving, and seaming panels at the building site (or a staging yard). This is not a standard ground-mounted roof-panel flying-cut production sequence.

2. On-site sequence

1. Uncoil color / galvanized coil
2. Roll form the flat corrugated panel
3. Cut panel to length (footer-to-footer developed length)
4. Curve / arch the cut panel to the design radius
5. Seam (sew) adjacent arched panels into a continuous shell

MIC240 accessory lists include a sewing machine for panel joining — treat seaming as part of the building process, not as an afterthought roof-panel accessory.

3. Speed bands to read separately

These are separate references — do not average them into one “line speed.” Industry competitor tables may show different seam speeds; keep ZTRFM MIC240 evidence labeled.

4. Scope note

Not a standard ground-mounted roof-panel main production line. Applicable span on MIC240 evidence is about 5–40 m and varies with thickness and engineering — not an absolute guarantee value. Feed width ~914 mm → product ~610 mm on the MIC240 class.

Thickness band on MIC240 evidence is about 0.6–1.5 mm. Do not overwrite this process page with larger 1250–800 class power or width figures from the same pack.

5. Checkpoints

• Developed length matches design arch before curving
• Radius / span engineering signed off for the thickness used
• Seam package present if continuous shell assembly is required
• Site power and mobility scope match the named proposal

6. Buyer FAQ

Does cut happen before or after curving?

Cut-to-length of the flat panel happens before arch curving so each piece matches the developed arch length.

Where are power ratings?

See the MIC240 equipment page (total ~19.7 kW class and station motors). This process page does not invent a second power table.

Can I skip seaming?

Only if the building method and proposal explicitly omit the sewing machine. MIC240 accessory lists commonly include it for shell assembly.

Same flow as a factory roof panel mill?

No. Factory roof lines typically form and cut continuous panels without on-site arch + seam for beamless shells.