Custom Sheet Metal Fabrication
We manufacture custom sheet metal stampings in Hangzhou, China. Our work includes blanked and pierced parts, formed brackets and deep drawn components. Send us a drawing or sample so we can review the material, tooling and critical features before quoting.
Part Geometry
The finished shape helps determine the tooling. Flat parts depend on the profile and hole pattern. Formed parts add mounting faces or offsets. Drawn parts need enough material to flow into the die without excessive thinning or distortion.
Blanking cuts the outside profile. Piercing creates holes or slots within it. For flat mounting plates and connectors, specify which holes locate the part, how flat the mounting face needs to be and which side can accept a burr.
Ask About Blanked & Pierced Parts
Stamped and formed brackets can add flanges, offsets or mounting tabs to a cut profile. Mark which faces locate the bracket in the assembly. Where a hole sits close to a bend, check its shape and position after forming.
Ask About Stamped Brackets
Deep drawing pulls sheet metal into a die to create a hollow shape, such as a cup or shell. The material grade, starting thickness, draw depth and corner radii help determine how the part can be formed. If it must fit another component, identify the inside or outside surface that controls the fit.
Ask About Deep Drawn PartsTechnical Review
Drawing references to identify
Burr Side · Reference Hole · Mounting Face
| What matters on the part | What to agree before production |
|---|---|
| A locating hole or a slot that must line up | Dimension it from the same reference feature used in assembly. Agree whether position is checked on the flat blank or after forming. |
| An exposed or mating edge | Specify the permissible burr side and any deburring requirement. If the edge contacts another part, define the condition it needs at assembly. |
| A flat mounting face | State which face must sit flat and how flatness will be checked. Piercing or forming near that face can affect how the part seats. |
| A drawn wall or rounded corner | Mark the draw depth, critical radii and any minimum finished wall thickness that matters to the application. Review material and geometry together. |
| A visible surface or coated fit | Identify cosmetic faces and specify whether critical dimensions apply before or after finishing. Allow for the agreed finish at tight interfaces. |
Mark the features that matter in assembly and send us the drawing for review.
Submit Drawings for ReviewPrototype to Production
We review the part shape, expected volumes and revision status before discussing a die. A laser-cut and bent sample can help check fit when the design is still changing. If stamping will be the production route, review a sample from that route before approving the repeat order, especially where burr direction, springback or draw thinning affects the part.
| Project condition | Route worth reviewing | What to check |
|---|---|---|
| A changing design or early fit sample | Laser cutting and CNC bending, where the geometry allows | Fit and assembly can be checked before committing to production tooling. Confirm which features may differ on the stamped part. |
| An approved design with recurring demand | Stamping with tooling matched to the part | Compare tooling cost and piece price across the expected order quantities. Agree how changes to the part will be handled. |
| A seamless hollow shape is part of the design | Deep drawing | Review material formability, corner radii, draw depth and the features that may require trimming or another operation. |
When the part needs welding or assembly, include the mating parts in the review. We coordinate surface finishing with partner factories when it is included in the order.
Explore Custom Sheet Metal FabricationOrdering Information
Start with the grade, thickness and surface condition on the drawing. The material for a flat pierced plate may differ from the material needed to form a deep wall.
| Material to review | What to specify |
|---|---|
| Cold-rolled or mild steel | Specify the grade, thickness and any finish needed after stamping. For a drawn part, identify the required forming grade where known. |
| Stainless steel | Specify the grade, surface finish and visible face. Review the radius, material condition and any restrictions on marks. |
| Aluminum | Specify the alloy and temper. Discuss tight radii, thin sections and the appearance required after forming. |
First Article Review
We manufacture metal parts in our Hangzhou workshop using mechanical and hydraulic presses. When a project calls for a first sample, agree which dimensions and surfaces need to be checked. A bracket may need a check on its mounting faces and hole pattern. A drawn part may need checks on depth, roundness or wall thickness. Keep the approved drawing revision and acceptance criteria with the repeat order.
Start Your Project
Send your part drawing, material, thickness and quantity. Mark the features that control fit and tell us which finishing or inspection steps you need. If you are planning a sample followed by repeat orders, include both quantities.
You can also email your drawing to susan@hzjiansen.com.
Phone: +86 137 3588 7730
