- Ellyn@tenghui-proto.com
- +86-18666887162
Turn your individual sheet metal components into a complete enclosure, chassis, cabinet, box, frame, or mechanical assembly.
TENGHUI coordinates cutting, forming, welding, hardware insertion, surface finishing, and final assembly according to your drawings and bill of materials. You receive finished assemblies with mating components, hardware, critical dimensions, and cosmetic surfaces checked before delivery.
Services are available for one-off prototypes, low-volume projects, and repeat production orders.
✅ All Design Uploads Are Secure & Confidential
Heavy-duty enclosures specifically built for industrial automation, manufacturing plant machinery, robotics, and machine control applications, offering excellent structural stability.
Weatherproof and dustproof enclosures manufactured to meet NEMA standards. Protects sensitive internal components from dust, water, oil, and harsh environmental corrosion in outdoor locations.
Custom-engineered electrical cabinets and control boxes designed for power distribution systems and industrial wiring protection. Built with precise cable entries and mounting pans.
Precision-fabricated small to medium enclosures designed for PCBs, embedded systems, telecommunication hardware, and smart devices. Features tight tolerances and excellent cosmetic finishes.
Ensures precision alignment between mating fastener locations across multi-part welded assemblies.
Identifies and prevents structural collisions between formed flanges, brackets, and weld seams.
Verifies adequate operational clearance for assembly tools, riveting equipment, and hardware insertion.
Checks hinged doors, sliding panels, and enclosure covers for smooth, binding-free operation.
Analyzes cumulative dimensional variations across stacked components to guarantee final assembly fit.
Accounts for paint, powder coat, or plating buildup dimensions that affect tight-fitting mating interfaces.
Protects high-finish exterior surfaces from handling scratches and process marks throughout fabrication.
Guarantees that mating interfaces match your exact external hardware and equipment integration points.
High-precision fiber laser cutting delivers accurate blanks, contours, and complex external profiles.
Efficient CNC punching for standard patterns, cutouts, holes, and functional features.
Programmable CNC press brakes ensure precise angles, channels, and multi-bend structures.
Roll bending produces continuous curves, cylindrical sleeves, and radius enclosure sections.
Comprehensive joining options ensure strong structural frames and clean cosmetic weld seams.
Self-clinching hardware and rivet-nuts securely fitted to precise specification.
Post-weld mechanical smoothing removes burrs and blends joints for flawless appearances.
Durable powder coating, painting, or plating options protect against corrosion.
Complete integration of internal components, rails, and hardware assemblies.
Rigorous dimensional and visual checks guarantee your enclosures arrive ready for use.
Your enclosure design can seamlessly incorporate ventilation slots, cable-entry holes, louvers, knockouts, mounting patterns, internal brackets, threaded hardware, removable covers, access doors, hinges, handles, and equipment rails to meet exact functional requirements.
| Your Assembly Requirement | Suitable Method | Important Design Factors |
|---|---|---|
| Thin sheet with narrow or visible seams | Laser welding | Joint fit-up, material, thickness and weld access. |
| Controlled weld appearance on stainless steel or aluminum | TIG welding | Heat input, distortion and grinding requirements. |
| Frames, brackets and structural components | MIG welding | Weld size, strength and surface appearance. |
| Overlapping panels and cabinet bodies | Spot welding | Electrode access, overlap and material thickness. |
| Permanent joint with access from only one side | Blind riveting | Rivet diameter, grip range and material. |
| Removable covers or serviceable components | Screws and bolts | Thread type, torque and tool clearance. |
| Captive threads in thin sheet metal | Self-clinching hardware | Sheet hardness, thickness, hole size and edge distance. |
Fitted with self-clinching nuts, studs, standoffs, rivet nuts, and threaded inserts before final assembly.
Sourced or installed mechanical hinges and operational handles for doors and panels.
Integrated latches and secure mechanical locking mechanisms for enclosures and cabinets.
Equipped with internal equipment mounting rails and specialized support brackets.
Fitted with rubber feet, support pads, and adjustable leveling components for stability.
Assembled with service-ready removable panels, access covers, and mating bodies.
Installed using your designated manufacturer brands, specific part numbers, materials, and finishes.
Seamless integration of customer-supplied mechanical parts and specialized hardware assemblies.
Installation Details: For reliable installation, provide the fastener manufacturer, part number, material, finish, quantity, and installation position whenever possible. Electrical wiring, electronic component integration, sealing tests, and specialized functional testing require separate review before quotation.
| Material | Available Types | Assembly Considerations |
|---|---|---|
| Aluminum | 5052, 5754, 5083, 6061 | Lightweight, corrosion-resistant material widely used for enclosures, brackets, and structural frames. |
| Stainless Steel | SUS301, SUS304, SUS316 | Offers high strength, excellent corrosion resistance, and clean cosmetic finishes for demanding environments. |
| Cold-Rolled Steel | SPCC, DC01, DC05 | Features smooth surface quality and good formability, ideal for general panels, trays, and chassis. |
| Carbon Steel | SPHC, Q235, Q355 | Cost-effective structural material providing high mechanical strength for heavy-duty assemblies and frames. |
| Electro & Hot-Dip Galvanized Steel | SECC, SGCC | Coated with zinc for enhanced corrosion protection while maintaining smooth surface aesthetics. |
| Copper & Brass | Selected applications | Available for applications requiring high electrical conductivity or decorative aesthetic finishes. |
| Titanium | Reviewed projects | Specialized high-performance metal for reviewed prototype and low-volume aerospace or medical projects. |
Removes sharp burrs and edges to ensure safe handling and preparation for subsequent processing.
Smoothes out weld seams and transitions for a clean, uniform structural appearance.
Produces directional directional satin or linear textures, commonly used on stainless steel and aluminum.
Creates an even matte texture, improves coating adhesion, and removes surface oxidation.
Achieves high-gloss or mirror-like reflective finishes for decorative or high-cosmetic components.
Provides a durable, thick, and protective polymer finish available in various colors and gloss levels.
Liquid paint applications tailored for specific color matching, texture, and environmental protection.
Electrochemical process that increases corrosion and wear resistance on aluminum parts with color options.
Electroplated metallic coatings offering strong corrosion resistance and conductive surfaces.
Chemical treatment for stainless steel to enhance corrosion resistance by removing free iron.
Drawing Specification Note: Specify visible surfaces, coating color, texture, gloss level, masking areas, grounding points, coating thickness, and acceptable cosmetic requirements on your drawing.
| Feature | Typical Capability |
|---|---|
| Standard laser-cut dimensions | Approximately ±0.1 mm |
| Standard CNC-bent features | Approximately ±0.15–0.2 mm |
| Completed assembly dimensions | Drawing review required |
| Welded assembly flatness and squareness | Drawing review required |
| Critical mounting interfaces | Must be identified on the drawing |
Base dimensional variations from individual cut and formed metal parts.
Cumulative effects of multiple press brake bending angles and sequences.
Clearance gaps in bolt and screw holes allowing slight structural shifting.
Thermal energy distribution introduced during continuous or stitch welding.
Post-weld metal cooling contraction affecting overall structural dimensions.
Clamping and positioning tooling used to restrain movement during assembly.
Build-up dimensions from powder coating, painting, or plating processes.
Scale of long parts, large cabinets, and multi-component assemblies.
Accumulated variances across stacked components, thick materials, and long seams requiring wider tolerances.
Drawing Specification Note: Clearly identify critical overall dimensions, mounting-hole locations, interface datums, flatness, squareness, door gaps, and internal clearances on the 2D assembly drawing.
Checking correct parts, material grades, and hardware specifications against drawings.
Verifying that overall profile and form dimensions match tight design requirements.
Ensuring accurate alignment and spacing for installation points and mating hardware.
Validating strict geometrical tolerances for structural frames and panels.
Inspecting weld seam cleanliness, profile uniformity, and cosmetic standards.
Ensuring self-clinching hardware, rivets, and fasteners are securely and flush seated.
Checking threads for burrs, cleanliness, and smooth engagement with matching bolts.
Testing functional movement, smooth swing, and secure locking of moving parts.
Inspecting paint, powder coat, or plating for color consistency and gloss levels.
Screening for cosmetic defects, blemishes, and surface imperfections.
Ensuring secure protective wrapping and cushioning are applied to prevent transit damage.
Inspection Reports & Testing: Dimensional reports, thread gauging, fastener torque checks, or customer-defined fit tests can be provided when specified before quotation.
Complete 3D assembly files showing final component positioning and fit.
Individual part files for flat pattern development and laser cutting verification.
Detailed manufacturing drawings for individual cut, formed, and machined parts.
Drawings indicating mating interfaces, weld locations, and overall assembly dimensions.
Complete itemized list covering all structural parts, hardware, and purchased items.
Explicit specifications for alloy grades and exact sheet or plate thicknesses.
Standard engineering welding notations, joint types, and seam locations.
Designated brand names, part codes, and specifications for integrated hardware.
Coating colors, textures, gloss levels, plating types, and treatment areas.
Primary inspection limits, mounting datums, and crucial geometrical tolerances.
Quality check protocols, dimensional report requests, and testing criteria.
Batch size and annual volume estimates for accurate process planning and cost optimization.
Once we receive your design files, our senior manufacturing engineers will manually perform a comprehensive DFM review and deliver an accurate, optimized quote within 24 hours.
