1
Drawing and DFM review
Check flat patterns, bend reliefs, hole-to-edge distances, hardware access, weld callouts, and finish masking.
Checkpoint
Open questions and proposed drawing changes documented before release.
Quality System
ISO 9001
Manufacturing Lead Time
Quoted by Scope
500+
Projects Completed
25+
Countries Served
25+
Years Experience
Dongguan
China Factory
ISO 9001:2015 Certified Project-Specific Quotations English-Speaking Support Lead Time Quoted by Scope
Before you commit
What you get from one drawing
No minimum order, no obligation, and no waiting on a trading company to relay questions. Send the drawing and the engineering answers come back from the factory that will build it.
No minimum order
One piece or ten thousand. A single prototype and a repeat-production order follow the same DFM review and inspection route.
Reply within 4 business hours
Drawing, material, quantity and delivery target are enough to start. You get a real engineering reply, not an auto-acknowledgement.
Quotation within 24 hours
Priced for your approved scope, with manufacturing lead time and freight shown separately so nothing is hidden in the total.
DFM review before you commit
Tolerance, bend relief, hole-to-edge, hardware access and finish masking are reviewed on your drawing — with the cost impact of each change stated.
Agreed inspection plan
Critical dimensions and acceptance criteria are fixed before production. Dimensional reports, material certificates and first-article records on request.
ISO 9001:2015 quality system
Certified to GB/T 19001-2016 / ISO 9001:2015. Fabrication, finishing and assembly controlled under one revision.
Typical reply within 4 business hours, Monday to Friday, 8AM–6PM CST.
Certified Quality & Compliance
Fabex operates a quality management system certified to GB/T 19001-2016 / ISO 9001:2015.
ISO 9001:2015 Certified
GB/T 19001-2016 quality management system
Complete fabrication scope
Precision sheet metal fabrication from drawing to finished part
Use this page for custom sheet metal parts, sheet metal enclosures, and fabricated metal cabinets that need several operations managed as one controlled build.
| Capability | Fabex scope | Engineering checkpoint |
|---|---|---|
| Materials and process limits | Most work uses 0.6-5 mm material; bending commonly 0.6-3.5 mm; laser cutting below 20 mm; welded plate can exceed 10 mm | Material grade, thickness, geometry, joint or edge requirements, finish, and required result are reviewed together. |
| Part envelope and logistics | One standalone part can be reviewed up to 5 m long x 3 m wide x 3 m high; multi-part assemblies can be longer when split for shipment | Most shipping pieces should target approximately 2.3 m or less in the relevant dimension. Consider standard 2440 x 1220 mm sheet stock, nesting, packed dimensions, container and truck clearances, lifting, route, and freight before release. |
| Tolerance plan | Indicative review ranges: suitable CNC-machined features +/-0.05 to +/-0.10 mm; laser-cut features +/-0.2 to +/-0.5 mm; fabricated assembly interfaces often +/-0.5 to +/-1.0 mm | These are not blanket guarantees. Process, material, thickness, feature and part size, datums, setup, bends, welding, coating, functional fit, and inspection method govern the released tolerance. |
| Integrated operations | Cutting, punching, bending, welding, hardware, finishing, assembly, and CNC machining review up to approximately 200 mm | The machining value is not sheet-metal thickness; the route and accepted limits depend on geometry, material, quantity, workholding, and required result. |
| Order quantity and lead time | No minimum order - from 1 piece; manufacturing lead time is stated in the quotation for the approved scope | No minimum order value applies, so a single prototype and a repeat-production order follow the same DFM and inspection route. The batch plan is scaled to your workload and delivery cadence, and lead time is quoted for the approved scope separately from transit time. |
Not sure whether your part fits this capability?
Send your drawing, material, quantity, and delivery target. Our team will review the process route, manufacturability risks, and open questions before quotation.
Prototype-to-production control
A fabrication workflow built around revision control
Each handoff keeps the drawing, process plan, inspection points, and approved finish aligned.
2
Route and sample planning
Select the cutting, forming, joining, and finishing route around geometry and quantity.
Checkpoint
First-article scope and inspection method agreed.
3
Controlled fabrication
Build to the released revision with in-process checks at operations that can shift critical features.
Checkpoint
Nonconforming features are contained before downstream value is added.
4
Inspection and repeat release
Record the agreed dimensions and finish checks, then retain the approved route for repeat orders.
Checkpoint
Production package tied to the customer revision.
What changes your quoted cost
- Material grade and sheet utilization
- Number and complexity of bends
- Weld length and cosmetic finishing
- Hardware and secondary operations
- Inspection depth and packaging
- Order quantity and production route
How we plan your project
Prototype-to-production fabrication program
See the commercial and engineering checkpoints Fabex uses to move this type of job from drawing review into controlled production.
Application
Power distribution boxes, retail displays, electronics enclosures, outdoor boxes, shelves, and baseplates
Material
SPCC, SGCC, SECC, aluminum 5052, SUS304, and other drawing-specified grades
Quantity
No minimum order - from 1 piece. Batch plan scaled to your workload, annual demand, and delivery cadence
Lead time
Quoted for the approved manufacturing scope; freight transit is stated separately
Typical production challenge
Manufacturing optimization starts with helping customers understand design limits, tolerances, and the best production route.
Approach
Review the drawing, simplify avoidable setups, define critical dimensions, approve a first article, and lock the released process route.
What you receive before release
Documented DFM findings, a proposed manufacturing route, quotation, and lead-time plan for your approval.
Sourcing questions
Custom sheet metal fabrication FAQs
Answers focused on buying a complete fabricated part rather than an individual process.
What should I send for a useful fabrication quote?+
There is no minimum order value - one piece or one thousand. Send a 3D model when available, a dimensioned drawing, material and finish requirements, quantities, critical tolerances, and the required delivery location. Fabex can flag missing manufacturing details during DFM review.
Can one supplier manage cutting, bending, welding, hardware, and finishing?+
Yes. The route can combine those operations under one revision and inspection plan. The quote identifies any outsourced or separately controlled operation before order release.
How do you handle drawing revisions between prototype and production?+
The released drawing revision should be recorded with the process plan and first-article approval. A changed revision is reviewed for tooling, program, inspection, and price impact before production resumes.
Will you sign an NDA and keep my design confidential?+
Yes - send your drawings under NDA. Files are used only to review and manufacture your order. We do not publish a customer name, product, drawing, or project detail without written permission, so ask for an NDA before you share anything sensitive and we will return a signed copy.
What are the freight and Incoterm terms?+
Freight is quoted separately under a named Incoterm and destination. FOB or CIF applies to sea and inland-waterway shipments; air, courier, and multimodal shipments use FCA, CPT, CIP, or DAP as agreed. Manufacturing lead time and estimated transit time are stated separately, and duties, taxes, customs charges, insurance, and destination services are included only when the quotation says so.
How should engineers specify practical tolerances without adding unnecessary cost?+
Start with function, fit, safety, part size, and how each feature will be measured, then assign tolerances by manufacturing process. As initial review ranges, suitable CNC-machined features may achieve +/-0.05 to +/-0.10 mm, laser-cut features commonly use about +/-0.2 to +/-0.5 mm, and fabricated assembly interfaces often use about +/-0.5 to +/-1.0 mm. Reserve tighter limits for critical datums and interfaces; blanket precision can require extra setups, machining, fixtures, inspection, rework, cost, and lead time, and may be impossible for the selected route.
Engineering before production
Three DFM checks that prevent expensive revisions
A useful fabrication quote begins with the manufacturing route, critical interfaces and realistic tolerances, not only a CAD model.
View the complete sheet metal DFM guideControl the critical features
Apply tight tolerances only to datums, mating features and functions that need them. Process and size govern what is practical; unnecessary precision adds setups, inspection, cost and lead time.
Reduce setup changes
Standardize bend radii, hole sizes, hardware and material thickness wherever the design permits.
Plan the full route
Check cutting, bending, welding, finishing, inspection and assembly access before releasing the drawing.
Your China Manufacturing Partner
No Black Box, No Guesswork
We make offshore manufacturing transparent. Here's what every client gets:
English-Speaking Project Manager
Your dedicated PM handles all communication in English. No language barrier, no misunderstandings.
Response Within 4 Hours
Email, WhatsApp, or WeChat — we respond within 4 business hours. Timezone gap managed.
Weekly Photo Updates
See your parts in production. We send photos and progress updates every week.
Customer Perspective
Trust is earned in the next order
B2B customers often give brief, practical feedback and show their trust through the next project.
Selected customers
- Huawei
- vivo
- Sunglow
Full production programs, repeat orders, and multi-year supply — not one-off samples. References available for your sector on request.
Trust shown through repeat work
In contract manufacturing, the clearest reward is often another drawing, another production order, or a larger scope.
Confidential by default
We do not publish a customer's name, product, drawing or project details without written permission. That is not a lack of proof - it is how contract manufacturing works, and it is the same discretion we apply to your designs.
Our Factory
See Our Facility
Visit our sheet metal fabrication facility in Dongguan, China. Modern equipment, clean workshop, skilled team.
CNC Machining & Punching
6kW Fiber Laser Cutting
CNC Press Brake Bending
TIG / MIG / Spot Welding
Powder Coating & Finishing
Quality Inspection & CMM
Free Design Review & Quote Drawing and requirement review Free design optimization review No obligation, no hidden fees
Ready for Your Custom Sheet Metal Fabrication?
Send your drawings and requirements for an engineering review, project-specific quotation, and manufacturing plan.