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    Process Library · Bending / Curving / Press Brake

    Gutter Folding Machine Line

    Coil mills roll continuously. Long folders clamp and flip blanks. Search dumps both here. Folder cycle time is not rain-mill metres per minute.

    folding machines guttersK style gutter folder8 m CNC folder

    What this process looks like

    Coil mills roll continuously. Long folders clamp and flip blanks. Search dumps both here. Folder cycle time is not rain-mill metres per minute.

    Rain / K-style mill

    Rain / K-style mill

    ~10–12 m/min; main ~4.0 kW + hyd ~3.0 kW; shaft ~φ70; ~18 passes; ~0.3–0.7 mm

    Half-round 6″

    Half-round 6″

    ~3–8 m/min; ~5.5+3 kW; φ50

    Combo crate

    Combo crate

    Gutter + downpipe + bend/neck; 0.3–0.8 mm; feed 312 mm; 3 t manual; 380 V / 60 Hz. Downpipe on that sheet 22 st Ø75, 20 m/min, 7.5+5.5 kW

    Specifications

    Rain / K-style mill~10–12 m/min; main ~4.0 kW + hyd ~3.0 kW; shaft ~φ70; ~18 passes; ~0.3–0.7 mm
    Half-round 6″~3–8 m/min; ~5.5+3 kW; φ50
    Combo crateGutter + downpipe + bend/neck; 0.3–0.8 mm; feed 312 mm; 3 t manual; 380 V / 60 Hz. Downpipe on that sheet 22 st Ø75, 20 m/min, 7.5+5.5 kW
    8 m CNC folder + slitterFold length ~8000 mm; max ~125°; steel ~1.5 mm (≤250 MPa); Al ~2.0; SS ~1.0; slit ~0.8 m/s; hyd ~7.5 kW; total ~8 kW; cycle ~12 s
    3 m neighbour3 m hyd brake, PPGI/GI ≤2 mm — shorter flashings

    Operation steps

    If the job is volume coil

    If the job is volume coil

    Decoil, form the K, hyd cut. First-off is the trough vs CAD, not a folder 125° coupon.

    If the job is long blank work

    If the job is long blank work

    Slit the blank. Fold to the recipe. Cycle time ~12 s is that sheet, not mill speed. 7.5 kW is clamp-and-flip, not rain hyd ~3 kW.

    6 m and 8 m stay separate

    6 m and 8 m stay separate

    3 m hyd brake is shorter flashings. 200T×4000 folder ~15 kW vs 6×4000 NC shear ~7.5 kW are two machines.

    Combo gutter + downpipe

    Combo gutter + downpipe

    312 mm feed, 380 V / 60 Hz. Downpipe flower on that sheet is not the gutter flower.

    What's included

    This line

    This page: How to choose rain mill versus 8 m folder for a K trough.

    Standard build

    Sister lines: Gutter + downpipe mill, gutter cover, downpipe reducer, elbow bender.

    Key details

    Coil mill vs folder

    10–12 m/min does not belong on the 8 m cycle.

    Note 2

    6 m vs 8 m vs 3 m — Three crates. Name the bed length on the tag.

    Trough vs 125° flange

    First-off matches the process you actually ran.

    FAQ

    Should I buy a mill or a folder for K-style gutter?
    Volume coil work is a rain mill at about 10–12 m/min. Long custom lengths are an 8 m CNC folder with a ~12 s cycle.
    Can mill speed sit on the folder?
    10–12 m/min is the rain mill. The folder is clamp-and-flip, about 12 s per piece, hyd ~7.5 kW / total ~8 kW.
    How are price and lead time quoted?
    Send whether the job is coil volume or long blanks, length, thickness and site voltage. Commercial terms come back on the offer.

    Related processes

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