Custom Sheet Metal Fabrication in China
Sheet Metal Processing
We coordinate cutting, bending, joining, finishing, and assembly for custom brackets, panels, enclosures, and production-ready metal fabrications—built to your print.
Request a QuoteEngineering-Led Manufacturing
One-Stop Sheet Metal Processing
Balford handles custom sheet metal fabrication in China for parts and assemblies made directly from your drawings. We convert flat sheet into functional brackets, panels, covers, frames, cabinets, and enclosures through a controlled sequence of cutting, punching, bending, welding, hardware insertion, finishing, and assembly.
A successful sheet metal job depends on more than one machine's accuracy. The flat pattern, bend sequence, grain direction, tooling access, weld placement, distortion control, finish, and assembly datums all have to work together. Balford reviews these relationships before production starts and flags features that may need bend relief, a different radius, a revised hole location, or a tighter tolerance.
Projects can move from prototypes or sample verification into repeat production. Our quote spells out which operations are included and which characteristics get inspected, so you're comparing a complete manufacturing route—not separate prices that leave out finishing, hardware, or assembly.
Discuss Your DrawingProcess Options
Complete Sheet Metal Workflow
We select each stage based on material, thickness, geometry, quantity, and final appearance. Related service pages give you more detail.
Sheet Cutting
Laser cutting, punching, shearing, or other profile-cutting methods prepare blanks, holes, and openings for downstream forming. We review edge condition, heat effects, nesting, and burr direction against the final part requirements.
Learn MoreMetal Bending
Press-brake and related forming operations create flanges, channels, and profiles. Bend radius, allowance, springback, grain direction, and feature clearance are all factored in when we develop the flat pattern.
Learn MoreAssembly and Subassembly
Welding, riveting, fasteners, inserted hardware, and selected assembly operations combine fabricated parts into production-ready units. Locating features and inspection points help us control fit and minimize distortion.
Learn MoreTechnical Comparison
Sheet Metal Process Planning Guide
| Stage | Standard processes we run in-house | Critical parameters we monitor | What we need from you to quote |
|---|---|---|---|
| Getting the blank ready | Laser cutting, punching, shearing, and drilling | Profile geometry, hole locations, edge quality, burr limits, and nesting layout | Material grade, thickness, flat pattern or finished part model |
| Shaping the part | Press brake bending, folding, and stamping | Inside radius, bend allowance, springback compensation, and forming sequence | Final dimensions, datum references, and acceptable tooling marks |
| Putting parts together | MIG/TIG welding, riveting, clinching, fasteners, and pressed-in hardware | Joint fit-up, heat distortion control, tool access, and weld appearance | Weld symbols per AWS, hardware specs, and assembly-level model |
| Surface treatment | Deburring, grinding, polishing, powder coating, plating, and anodizing | Surface prep, masking requirements, color match, coating thickness, and handling | Finish specification, cosmetic surface zones, and packaging requirements |
| QC and subassembly | Dimensional inspection, CMM/gauge checks, fit-up trials, and subassembly validation | Functional datums, tolerance stack-up analysis, and completeness verification | Critical-to-function characteristics and mating part interface data |
Production Control
DFM for Sheet Metal
Early DFM review catches flat-pattern errors, inaccessible bend lines, and distortion-prone assemblies. Balford walks through the entire fabrication sequence before we commit to tooling or production.
Bend Radius and Relief
Inside radius should match material thickness and grade; relief cuts prevent tearing or distortion at corners. Features placed too close to a bend line will shift unless relocated, relieved, or added after forming.
Bend Allowance and Springback
The flat pattern has to account for material thickness, radius, tooling, and bend angle. Springback varies by alloy and grain direction, so we verify production values with actual trials rather than relying on generic charts.
Welding and Distortion
Joint design, weld sequence, fixturing, and heat input all affect the final assembly. Locating tabs, balanced welds, and proper access improve repeatability and cut down on cosmetic rework.
Tolerance Stack and Inspection
Sheet metal assemblies accumulate variation from cutting, bending, welding, hardware, and finish. We focus dimensional control and fit checks on functional datums and the interfaces that actually matter to your end product.
Material Planning
Sheet Materials and Surface Finishes
You need to lock down the exact grade, temper, thickness, and finish spec. Two materials can look identical but bend, weld, and take coating completely differently.
Cold-rolled and carbon steel
Standard for cabinets, panels, brackets, and frames. Specify corrosion protection, weld prep, and coating requirements up front—don't leave it to guesswork.
Stainless steel
Chosen for corrosion resistance and appearance. You'll need to control grain direction, prevent scratching, manage heat tint and distortion, and define the finish orientation.
Aluminum
Good for lightweight enclosures and panels. The alloy and temper drive bend radius limits, cracking risk, weldability, and how the anodized finish comes out.
Galvanized and coated sheet
Gives you corrosion protection, but watch the cut edges, welding fumes, coating damage, and what touch-up you'll need after fabrication.
Copper and brass
Used for conductive or decorative parts. We'll review surface protection, forming direction, and joining methods against your appearance requirements.
Application Experience
Custom Sheet Metal Applications
Electrical and Electronic Equipment
Enclosures, covers, panels, shields, trays, and mounting parts—all prepped for hardware, coating, and final assembly.
Industrial Machinery
Frames, guards, brackets, cabinets, and equipment panels built from controlled drawings and assembly models.
Automotive and Mobility
Mounting parts, housings, structural brackets, and formed assemblies that need consistent fit and controlled finishing run after run.
HVAC, Medical and Appliances
Application-specific ducts, covers, trays, chassis, and fabricated subassemblies with defined appearance and cleanliness specs.
Evidence and Resources
Sheet Metal Design and Production Resources
These examples and technical resources show how we turn your drawing requirements into a practical, buildable production plan.
Choosing a Sheet Metal Cutting Method
A practical guide to matching laser cutting, shearing, punching, and related methods against your material, edge quality needs, downstream forming, and volume.
Learn MoreBend Allowance and Springback
Hands-on guidance on K-factor, inside radius, grain direction, flat-pattern development, and production validation for bent sheet metal parts.
Learn MoreDesign for Assembly and Subassembly
A sourcing and design guide covering datums, tolerance stack-up, joining access, mistake-proofing features, distortion control, and inspection.
Learn MoreProject Preparation
What to Include in a Sheet Metal RFQ
Send a controlled 3D model and 2D drawing with material grade, thickness, finish, quantity, hardware, weld symbols, and critical dimensions. Flag cosmetic surfaces and permitted tool marks. If the part mates with another component, share the assembly context—it helps us understand the functional datums and avoid tolerance issues downstream.
For coated parts, specify the color or finish standard, gloss level, and texture if applicable. Identify any masking areas and acceptable rack or contact marks. Keep in mind that coating thickness can affect press-fit hardware, grounding points, threads, and close-tolerance assemblies—flag these interfaces before we start fabrication.
For welded or assembled products, provide a bill of materials, hardware specs, and completeness checks. A production-ready quote should state whether the deliverable is a single fabricated part, a welded frame, a finished enclosure, or a fully tested subassembly.
Getting Started
Controlled Project Workflow
Share Files and Requirements
Send us the model, drawing, material, thickness, finish, hardware, quantities, and assembly context.
Fabrication DFM
We review the flat pattern, bend radii, feature clearances, weld access, tolerance stack-up, and finish implications.
Prototype or Sample
We cut, form, and assemble parts to verify geometry, fit, appearance, and the inspection method.
Controlled Production
Production runs use approved programs, tooling, fixtures, weld sequences, finish specs, and quality checks.
Packing and Delivery
We protect cosmetic and functional surfaces while confirming quantity, labeling, and assembly completeness.
Frequently Asked Questions
Sheet Metal Processing FAQ
Our answers are based on drawing review because material, geometry, and production volume drive what's practical.
Ask an EngineerWhich sheet metal processes can Balford coordinate?
Projects can combine profile cutting, punching, drilling, press-brake bending, stamping, welding, riveting, inserted hardware, deburring, grinding, coating, plating, and assembly. The exact process route is defined by the drawing, material, volume, and finish requirements.
How should bend dimensions be specified?
Use clear functional datums and note whether dimensions apply before or after finishing. Inside radius, angle, flange length, and profile tolerance should reflect how the part fits the assembly. Balford develops and validates the flat pattern from the approved production setup.
Can Balford make complete enclosures and subassemblies?
Yes, we can evaluate complete fabricated units when you supply assembly drawings, a bill of materials, hardware, weld symbols, finish specs, and inspection or completeness requirements.
How are cosmetic surfaces protected?
Mark appearance zones on the drawing. We then plan material film, tooling protection, handling, grinding direction, coating, inspection lighting, and packaging around the agreed cosmetic standard.
What tolerances are realistic for sheet metal?
Capability depends on material, thickness, process, bend count, datum scheme, welding, and finish. Balford confirms drawing-specific tolerances and may recommend profile or fit controls for assemblies rather than applying a tight linear tolerance to every surface.
What is required for a sheet metal quotation?
Provide 3D and 2D files, material and thickness, quantity, finish, weld and hardware requirements, critical dimensions, cosmetic zones, packing needs, and the mating assembly when available.
Secure Project Review
Send Balford Your Drawing
Share the latest revision, material, quantity, finish, and functional priorities. We can discuss NDA requirements before exchanging detailed project files.
Request for Quote