Brackets and channels
Mounting brackets, U channels, L brackets, supports, and flanged parts with hole patterns or hardware.
CNC bending service
CNC bending service in China for formed sheet metal parts.
Black Iron Metal supports formed brackets, channels, covers, enclosure panels, cabinet parts, and bent assemblies with RFQ review for bend radius, tooling access, hole-to-bend risk, cosmetic faces, inspection, and export packing.
Best fit for formed sheet metal parts
Use this service when the part shape depends on controlled bends, flanges, channels, tabs, formed covers, or enclosure geometry after laser cutting.
- CNC bent brackets, channels, U shapes, L brackets, covers, trays, and flanged plates.
- Formed cabinet panels, enclosure doors, side panels, access covers, and internal mounting parts.
- Material review for aluminum, stainless steel, galvanized steel, carbon steel, and powder coated parts.
- DFM review for bend radius, flange length, tooling access, hole-to-bend distance, cosmetic faces, and packing.
CNC bending RFQ decisions
These details help engineering review whether the formed part can be made consistently before samples or repeat production are quoted.
| Decision area | Buyer risk | RFQ detail to include |
|---|---|---|
| Bend radius and angle | Unclear radius or angle control can change blank size, fit, and inspection results. | State required inside radius and angle where critical, or allow supplier standard tooling after review. |
| Hole-to-bend distance | Holes, slots, louvers, or hardware close to bend lines can distort or interfere with tooling. | Mark critical holes, mating features, slots, PEM hardware, and any features near bend lines. |
| Dimension control | Mixed inside, outside, and flat dimensions can create quote and inspection confusion. | Provide formed drawings, 3D files, controlled dimensions, and active revision numbers. |
| Cosmetic side | Visible faces can be marked during cutting, bending, hardware insertion, finishing, or packing. | Identify visible surfaces, grain direction if relevant, protective film, finish, and handling limits. |
| Sequence and packing | Deep channels, boxed forms, hardware timing, coating, and carton limits can affect the process route. | Send assembly context, hardware side, finish sequence, carton limits, destination, and packing method. |
Typical CNC bent parts
These part types commonly need a formed drawing review before the quote is reliable.
Enclosure panels
Doors, covers, trays, cabinet sides, access panels, and bent equipment housings.
Laser cut blanks
Cut profiles that need downstream forming, bend-ready dimensions, burr control, and edge review.
Visible covers
Powder coated covers, brushed stainless panels, aluminum covers, and parts with protected cosmetic faces.
Hardware-ready parts
PEM nuts, studs, standoffs, hinges, locks, and fastener features planned around bend sequence.
Repeat production parts
Approved formed parts that need revision control, inspection priority, packing baseline, and annual demand planning.
Inspection priorities for formed parts
Inspection should prioritize the dimensions and surfaces that drive assembly fit, finish approval, and repeat order consistency.
Functional fit
Check formed width, flange height, bend angle, hole alignment, mating clearances, and flatness where parts assemble.
Cosmetic protection
Review visible faces, brush direction, powder coated surfaces, bend marks, edge condition, and handling damage before packing.
Repeat baseline
Keep the active drawing revision, approved sample notes, inspection focus, hardware timing, and packing method tied to repeat orders.
Related sourcing pages
Use these pages to connect bending decisions with laser cutting, material behavior, full fabrication, and repeat production requirements.
Laser cutting before bending
Review cut profiles, bend-ready blanks, edge condition, holes, slots, material, thickness, and tolerance needs.
Aluminum sheet metal parts
Review alloy, temper, bend radius, visible surfaces, anodizing or powder coating, and insert planning.
Full sheet metal fabrication
Review cutting, bending, welding, finishing, assembly, inspection, and export packing under one workflow.
CNC bending FAQ
What should a CNC bending RFQ include?
Send formed drawings, 3D files if available, material grade, thickness, bend radius, bend direction, critical dimensions, cosmetic side, finish, quantity, destination, and packing expectations.
Should buyers provide flat patterns for bent sheet metal parts?
Flat DXF files are useful when they are approved and match the current revision. For controlled design review, buyers should also send the formed drawing or 3D file so bend allowance, tooling access, and sequence risk can be reviewed.
What details create risk near a bend line?
Holes, slots, PEM hardware, louvers, tabs, narrow flanges, deep channels, and cosmetic surfaces near bend lines should be marked for review because they can affect forming sequence, distortion, and inspection.
Get a CNC bending quote
Send the formed drawing and key bend requirements. If online submission is unavailable, the form opens a prefilled email.
- Send formed drawings and 3D files where possible.
- Mark bend radius, critical inside dimensions, cosmetic faces, and hardware near bends.
- Mention whether the formed part also needs welding, coating, assembly, or packing as a kit.