Custom Fabrication
We use CNC press brake bending to form sheet metal brackets, mounting parts and enclosure components in Hangzhou, China. We work from your finished-part drawing and review how the bends affect fit, hole alignment and visible surfaces. Order formed parts on their own or discuss laser cutting and bending in the same quote.
Capability Review
A CNC press brake forms a flat metal blank between a punch and die. For a simple angle bracket, the two mounting faces drive the bend geometry. For a part with several flanges, the order of bends and access for the tooling can affect which shapes are practical.
| Review item | What determines the result |
|---|---|
| Material and thickness | The grade, temper where applicable and sheet thickness affect the radius the part can form and how much it springs back. |
| Bend length and flange size | A long bend needs suitable tooling and machine capacity. A short flange needs enough support in the die. We review both with the part geometry. |
| Bend angle and inside radius | Specify the finished angle and inside radius wherever they affect fit. Material, thickness and tooling influence the radius and angle we can achieve. |
| Hole-to-bend distance and bend relief | Holes or slots near a bend can change shape. Relief at the end of a bend can help keep adjoining material from tearing or distorting. |
| Formed dimensions and tolerances | We review the mating faces, hole pattern, angle and finished width that govern assembly. Specify the datum or reference face where it matters. |
| Surface and delivery condition | Mark cosmetic faces and identify any deburring, joining or finishing needed after forming. We review these operations with the drawing. |
Formed application example
For a bracket that bolts to two surfaces, check the mounting faces and hole locations on the finished part. The bend angle and distance from the bend to the hole pattern can both affect installation.
Formed application example
For a part that fits over a rail or around another component, check the internal width and flange clearance after bending. On covers and enclosure parts, check the corner relief and where adjacent flanges meet.
Finished-Part Review
| If the part needs to… | Check this on the formed drawing |
|---|---|
| Bolt up to a mating part | Dimension the hole pattern from the face that locates the part in assembly. Review holes close to the bend before the flat blank is cut. |
| Fit over a tube or sit inside a frame | Set the final internal or external width where it controls fit. Check how variation from both bends can affect the opening. |
| Close at the corner of a cover | Check clearance between adjacent flanges and allow space for bend relief where needed. Mark the gap that matters for assembly or appearance. |
| Keep a face visible after installation | Identify the cosmetic face and any surfaces that must stay clear of tool marks. Discuss finish and acceptance before approving the part. |
Share the formed drawing and mark the dimensions that control fit.
Submit Drawings for ReviewCoordinated Fabrication
When we quote cutting and bending together, we can review the flat blank against the finished geometry. That helps us check whether a cutout falls inside a bend, whether the bend sequence leaves tooling access and which dimensions should be checked after forming. If you already have cut blanks, tell us the material, thickness, edge condition and how the blanks were made so we can review the bending scope.
If the formed part needs welding or assembly, include the mating parts and the dimensions that control fit. We coordinate surface finishing with partner factories when it is part of the order. Agree on the required delivered condition, from a formed part to a finished assembly, before approving the quote.
Drawing and Quote Guidance
Tell us the exact grade and thickness. These are common starting points for review.
| Material to discuss | What to check |
|---|---|
| Mild or cold-rolled steel | Specify the grade, thickness and corrosion protection required for the finished part. |
| Stainless steel | Identify the grade, surface finish and any visible face. Grade and thickness affect forming behavior, so review the required radius with the drawing. |
| Aluminum | Specify the alloy and temper. Tight bends may need a larger radius or a different temper to limit cracking. Mark the rolling direction if it matters to the design. |
Hangzhou Manufacturing
We manufacture custom metal parts in Hangzhou. A formed sample lets you check the bracket or enclosure against the mating assembly before a repeat order. Review the finished angle, flange dimensions, hole alignment and cosmetic faces against the approved drawing. If you need inspection records, identify the dimensions and format your purchasing team expects when requesting the quote.
About JIANSENDrawing Submission
Share the finished-part drawing, material grade, thickness and quantity. Mark the critical angles, flange dimensions and mounting features. Tell us whether you need bending only or a quote that also covers cutting, welding, assembly or finishing.
You can also email your drawing to susan@hzjiansen.com.
Phone: +86 137 3588 7730
