Frequently asked questions
Every question we have been asked often enough to write down, collected from the product and guide pages. If yours is not here, send it with the drawing — it usually comes back with the quotation.
33 questions in total.
Products and profiles
Can this profile be customized?
Yes. The profile is manufactured to the approved drawing rather than sold as a fixed off-the-shelf size.
Answered on 27 product or guide pages: Custom Aluminum Profile Hinge – Model 1, Custom Aluminum Profile Hinge – Model 10, Custom Aluminum Profile Hinge – Model 20 and 24 more
Can Chengdacai provide machining after extrusion?
Yes. Cutting, milling, drilling, tapping and other CNC operations can be integrated into the production route.
Answered on 27 product or guide pages: Custom Aluminum Profile Hinge – Model 1, Custom Aluminum Profile Hinge – Model 10, Custom Aluminum Profile Hinge – Model 20 and 24 more
How is the final price calculated?
Pricing depends on profile weight, die complexity, alloy, finish, tolerances, secondary processing, quantity and packaging requirements.
Answered on 27 product or guide pages: Custom Aluminum Profile Hinge – Model 1, Custom Aluminum Profile Hinge – Model 10, Custom Aluminum Profile Hinge – Model 20 and 24 more
Can the motor housing include external cooling fins?
Yes. Fin geometry can be evaluated as part of the extrusion cross-section, subject to die feasibility, wall balance and handling requirements.
Can the bore and end faces be CNC machined after extrusion?
Yes. Boring, end facing and other precision features can be machined from defined datums after extrusion and heat treatment.
Which alloy is suitable for an aluminum motor housing?
6063 is often selected for extrudability and finish quality, while 6061 or 6082 may be considered for higher strength or machining requirements. The drawing and application determine the final choice.
Can anodizing be kept off grounding or bearing-contact areas?
Yes. Masking or post-anodizing machining can be specified for functional contact surfaces.
What determines tooling and unit price?
Section size, weight, die complexity, alloy, tolerances, machining, finish, inspection, order quantity and packaging all affect quotation.
Can internal cooling channels be formed by extrusion?
Potentially, yes. Channel layout must be reviewed for die feasibility, wall balance, cleaning access and the required pressure or leak performance.
Can Chengdacai machine ports and O-ring grooves?
Yes. CNC milling, drilling, threading and groove machining can be integrated after extrusion.
Can the enclosure be leak or pressure tested?
Yes, when the customer supplies a defined test specification including medium, pressure, hold time and acceptance criteria.
Should sealing faces be anodized?
That depends on the seal design and corrosion requirements. The drawing should identify masked, coated and post-machined areas.
What files are required for DFM review?
A dimensioned 2D drawing is essential; a 3D model, thermal requirements, coolant details and assembly information improve the review.
Can the diffuser channel be integrated into the extrusion?
Yes. The interface can be designed into the profile, subject to extrusion feasibility and the tolerances required by the diffuser and assembly method.
Which alloy is commonly used for LED lighting profiles?
6063 is frequently considered for its extrudability and anodizing appearance. The final alloy depends on section design, strength and machining needs.
Can mounting holes and end-cap features be machined?
Yes. Cutting, drilling, milling, tapping and slot machining can be completed after extrusion.
How is anodized color consistency controlled?
Color control should use an approved sample and defined range. Alloy, temper, surface preparation, batch conditions and profile geometry can influence appearance.
Can finished profiles be protected against scratches?
Yes. Protective film, separators and project-specific export packaging can be evaluated for visible surfaces.
Technical guides
What files should be included with an RFQ?
Send dimensioned 2D drawings, available 3D files, revision level, alloy, finish, tolerances and quantity.
Answered on 9 product or guide pages: 6061 vs 6063 Aluminum: Which Alloy Should You Choose?, Aluminum Channels for LED Strip Lighting Systems, Aluminum Enclosures for Electronics and Control Equipment and 6 more
Can Chengdacai review manufacturability?
Yes. The engineering team can review extrusion, machining and finishing requirements before quotation.
Answered on 9 product or guide pages: 6061 vs 6063 Aluminum: Which Alloy Should You Choose?, Aluminum Channels for LED Strip Lighting Systems, Aluminum Enclosures for Electronics and Control Equipment and 6 more
How can quotation accuracy be improved?
Clearly identify critical dimensions, cosmetic surfaces, secondary operations, packaging and expected order volume.
Answered on 9 product or guide pages: 6061 vs 6063 Aluminum: Which Alloy Should You Choose?, Aluminum Channels for LED Strip Lighting Systems, Aluminum Enclosures for Electronics and Control Equipment and 6 more
Can aluminum extrusion hold CNC-level tolerances?
Not across every as-extruded feature. Critical interfaces can often be CNC machined after extrusion when the application requires tighter control.
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
Which aluminum alloy gives the best dimensional accuracy?
No alloy is best for every profile. Geometry, temper, strength, finish and process route must be evaluated together. Review the 6061, 6063 and 6082 alloy guide .
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
Does anodizing change dimensions?
Anodizing changes the surface condition and can affect precision fits. Coating condition, masking and whether dimensions apply before or after finishing should be stated.
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
How should straightness be measured?
The drawing or quality agreement should define measurement length, support condition, reference and allowable deviation.
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
Why does profile length affect tolerance?
Bow and twist accumulate over length, and long aluminum profiles are more sensitive to support position and temperature during measurement.
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
What should be sent for a tolerance review?
Send the dimensioned drawing, alloy, temper, length, finish, quantities, critical features and inspection expectations. The aluminum extrusion RFQ checklist can help organize the request.
From Aluminum Extrusion Tolerance Guide: Design, Inspection and Cost Control
Can tracks, handles and mounting channels be integrated into one profile?
A custom cross section can integrate several functions when the geometry remains suitable for extrusion. Critical moving-system interfaces should be dimensioned and reviewed before tooling.
From Custom Aluminum Profiles for Automated Doors & Wardrobes
What determines the appropriate alloy and temper?
Section geometry, strength, finish, machining and application environment all matter. The requested alloy and temper should be confirmed during drawing review.
From Custom Aluminum Profiles for Automated Doors & Wardrobes
What should buyers include with an RFQ?
Provide cross-section and assembly drawings, door or panel data, hardware interfaces, tolerances, finish, machining, quantities and packaging requirements.
Send your automated door or wardrobe profile drawing for review and quotation.
From Custom Aluminum Profiles for Automated Doors & Wardrobes
Can one extrusion integrate mounting and cable features?
Yes, a custom cross section can include channels, locating faces and screw ports when the geometry is suitable for extrusion and the interfaces are defined in the drawing.
From Custom Aluminum Profiles for Automated Lighting & LED Systems
Which finish is suitable for lighting profiles?
Anodizing and powder coating are common options. The correct choice depends on appearance, environment, dimensional interfaces and the buyer’s performance requirements.
From Custom Aluminum Profiles for Automated Lighting & LED Systems
What should be sent for an engineering review?
Send the profile drawing, assembly interfaces, alloy, finish, tolerances, cut lengths, quantities and any machining details.
Send your lighting profile drawing for an engineering review and quotation.
From Custom Aluminum Profiles for Automated Lighting & LED Systems
Still have a question?
Send the drawing and the question together. An engineer reviews it and replies within one business day.