ISO 9001
Current public certificate label
Precision parts built to your drawing
Custom CNC Machining & Composite Manufacturing
Grancen supports custom metal, engineering-plastic and composite components from drawing review and process planning through manufacturing, inspection and finishing.
IATF 16949
Current public certificate label
Multi-Axis CNC
For complex component geometry
Composite Forming
Carbon-, glass- and aramid-fiber routes
Featured capabilities
One Supply Path for Machined and Composite Components
The manufacturing route is selected around geometry, material, quantity, finish and inspection requirements—not around a machine label alone.
Core capability
CNC Machining
3-, 4- and 5-axis milling, turning, drilling and wire-EDM support for metal and engineering-plastic parts.
Explore CNC Machining
Core capability
Composite Manufacturing
Carbon-fiber, glass-fiber and aramid-fiber parts supported through forming, trimming, machining and finishing.
Explore Carbon FiberCold Heading & Fasteners
Bolts, nuts, screws, rivets, pins and related formed parts.
View service →Sheet Metal Fabrication
Cutting, punching, bending, forming, stamping and welding.
View service →Precision Casting
Complex cast forms with secondary machining and finishing.
View service →Secondary Operations
Trimming, drilling, finishing, assembly and packaging.
See the process →
Prototype to production
Built for Complex Programs—not Just One Process.
Precision machining, composite forming and supporting metal processes are coordinated so tooling, secondary operations and inspection can be planned around the complete part.
About GrancenOur process
From Inquiry to Controlled Production
A four-stage flow adapted from Grance process material, with project-specific controls at every stage.
Inquiry & Drawing
Share STEP, IGES, SolidWorks, DXF, DWG or PDF plus material, quantity, finish and inspection needs.
Engineering Planning
Review geometry, interfaces, process route, tooling or mold needs and open points.
Production Controls
Execute the selected route with checks placed around critical features and process risk.
Inspection & Delivery
Verify agreed dimensions, tolerances and finish, then protect and coordinate delivery.
Composite process selection
Choose the Route by the Part—not the Surface Pattern.
Fiber form, resin introduction, tool structure, compaction source, geometry and production quantity determine the CFRP route.
View Carbon-Fiber WorkContinuous-Prepreg Compression
Directional continuous prepreg in matched heated tooling under a controlled press route.
Vacuum-Bag Heat / Pressure Cure
Continuous lay-up sealed under vacuum; an autoclave route adds controlled external pressure.
CF-SMC Compression
Non-continuous sheet molding compound flows to form ribs, bosses and 3D geometry.
Quality management
Inspection Evidence Matched to the Drawing
Critical dimensions, tolerances and surface requirements are reviewed with the manufacturing plan. Calipers, micrometers, gauges and CMM are used where applicable.
Material — grade, batch and condition where required.
Process — agreed manufacturing or cure records.
Finished part — dimensional, surface and appearance checks.
Representative work
Parts That Show the Breadth of the Process
Precision CNC ComponentsComposite Components
Precision CastingInspection & QualityManufacturing Facility
Machining WorkshopEngineering resources
Useful Reading Before the Next RFQ
What Is CNC Machining?
A current overview of milling, turning, drilling, materials and finishing.
Read CNC GuideDual-Source Manufacturing
A current Grancen article on resilience during supply-chain disruption.
Read Supply GuideHow Composite Routes Differ
A concise guide to prepreg compression, vacuum-bag curing and CF-SMC molding.
Compare RoutesFrequently asked questions
Answers for Custom Manufacturing Projects
Clear inputs at the quotation stage help engineering teams review the process route, inspection scope and open technical points.
What files are useful for a custom manufacturing quotation?
Share the available 3D model and controlled 2D drawing together with the material, quantity, finish and inspection requirements. Common review formats include STEP, IGES, SolidWorks, DXF, DWG and PDF.
Which manufacturing processes can Grancen coordinate?
Current capabilities include CNC machining, composite forming, cold heading and fasteners, sheet metal fabrication, precision casting and related secondary operations. The route is selected around the part requirements.
Can a project move from prototype to production?
The manufacturing and inspection route can be planned around prototype, small-batch or production requirements. The exact tooling, process controls and delivery plan are confirmed after drawing review.
How is the inspection scope determined?
Critical dimensions, tolerances, surface requirements and reporting needs are reviewed with the drawing and manufacturing plan. Measurement methods are selected according to the agreed features and project scope.
Start with the drawing
Send the Part Requirements for Review.
Share the available model or drawing, material, quantity, finish and inspection requirements. Follow-up continues through the existing Grancen inquiry workflow.