Equal Leg Perforated Angle Bead Line

1. Definition

An equal-leg perforated angle bead line (corner bead / plaster angle / drywall corner reinforcement) punches galvanized strip, roll-forms an equal-leg angle, and hydraulically cuts to length. Perforations key plaster or joint compound to the metal. It is not a partition stud/track main line, not an expanded-metal mesh mill, and not a UPVC steel-liner insert line.

Industry perforated wall-angle pages describe the same punch-then-form sequence for L profiles used on drywall corners and ceiling perimeters.

2. Typical process

1. Decoiler (ID about 350–450 mm; width about 300 mm; load about 1.5 t)
2. Punch press
3. Infeed
4. Roll forming host (gear drive; about 8 forming shafts)
5. Hydraulic cut-to-length after forming (Cr12MoV blades, about 60–62 HRC class)
6. Exit rack

BOM modules listed with the quotation: decoiler, punch press, forming host, hydraulic cut system, electrics, hydraulic pump station, product exit rack.

3. Reference parameters

4. Open items

• Forming line speed (m/min) — not locked in the source quotation → blocked; do not invent
• Equal-leg length in mm — drawing-based; FAQ does not publish a single public leg size
• Do not invent a solution-code name that is absent from master data

5. Boundaries

• Not light-gauge stud / track / furring main lines
• Not punch / expanded mesh machines when those exist as separate evidence packs
• Not older custom-misc “corner bead” routing that lived under a generic custom leaf — answer from this angle-bead leaf
• Market ads quoting 30–60 m/min or many leg sizes (20×20, 30×30…) are context only — do not overwrite FAQ power or shaft figures

6. Buyer FAQ

Why is m/min missing when punch spm is listed?

Source locks punch strokes/min and module kW, but does not publish a single forming m/min. Leave m/min open on the proposal.

Punch before or after forming?

FAQ process order is decoil → punch → feed → form → cut.

Is leg size standardized here?

No single public mm value is published. Send the equal-leg drawing or sample.

Same as UPVC steel liner?

No. Steel liner inserts into plastic window chambers; angle bead reinforces plaster/drywall corners.