How to Size a Sheet Metal Folder
Use your steel thickness to shortlist a manual, electric or hydraulic folder. Then choose the working width for your longest fold.
Start with the finished part
A sheet metal folder clamps the sheet along the fold line. The folding beam lifts the exposed edge to form a flange. For a part with several bends, check how each formed edge will clear the clamp and beam during the next fold, and how the finished part will be removed.
Beam folding is worth evaluating for straight edges on duct panels, flashing and covers. For profiles that require punch-and-die forming, compare the process with a press brake using the same part drawing.
Manual, electric or hydraulic?
Use these typical steel thicknesses to shortlist a drive type in the WinYing sheet metal folding machine range. Confirm the capacity for your material grade and required fold length before ordering.
Manual Folding
Typical for mild steel sheet. Consider for occasional straight folds and general workshop use.
View Manual Folding Machine →
Electric Folding
Typical for steel sheet. Consider for recurring folds on duct panels and straight profiles.
View Electric Folding Machine →
Hydraulic Folding
Typical for steel sheet. Consider for thicker sheets and repeated production work.
View Hydraulic Folding Machine →Choose your working width
- 1300 mm
- 1500 mm
- 2000 mm
- 2500 mm
- 3000 mm
- 4000 mm
Use your longest fold to select a working width. Custom widths are available to suit your workpiece. Confirm the thickness and width combination for your selected machine.
The same sheet can need a different setup
Rectangular duct panel
For a rectangular duct production line, include any existing seam pocket or flange in the drawing. Check how it will sit on the supports and pass the clamp during folding.
Cover with a return flange
Show the full cross-section, including the short return. Check the folding sequence, tool clearance and removal of the finished cover.
Five details to send with your inquiry
- 01Material & gradeInclude the grade if known.
- 02Sheet thicknessList the thickest sheet you run.
- 03Longest foldMeasure along the bend line.
- 04Part drawingShow angles, flange sizes and formed edges.
- 05Production volumeShare the usual batch size.
Have a part in mind?
Tell WinYing what you fold. We can review the geometry and help shortlist a machine configuration.