BAOLAIHUAPrecision Manufacturing
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Capabilities
Manufacturing servicesCapabilitiesCNC Machining3–5 axis milling and turning for tight-tolerance metal and plastic parts.Sheet MetalLaser cutting, bending, stamping and hardware assembly.Injection MoldingSteel tooling, insert molding and high-volume plastic production.3D PrintingSLA, SLS, FDM, MJF and metal printing for functional prototypes.Urethane CastingSilicone molds and cast urethane parts for 10–200 units.
Quality assuredPrecision you can verify
CMM inspection, FAI, PPAP and full dimensional documentation support every production program.
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Sheet metal fabrication · Since 1994
Precision Sheet Metal Fabrication
Large-format laser cutting, CNC bending, stamping and welded assemblies for automotive, medical and industrial OEMs — built in one Shenzhen factory.
Up to 20 mm carbon steel
Sheets to 3000 × 1500 mm
±0.1 mm tolerance
24h DFM + quote
20 mmCarbon steel cutting
3000 mmMax bend length
±0.1 mmLinear tolerance
24 hDFM + quotation
Product showcase
Sheet metal parts we build
Representative production parts and tooling from our Shenzhen factory, from laser-cut enclosures to stamped and welded assemblies.
01 · Enclosures
Sheet Metal Enclosures & Chassis
Laser-cut frames, covers and chassis with formed edges, PEM hardware and powder-coated finishes.
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02 · Stamping
OEM / ODM Stamped Components
Progressive and single-hit stampings from 25–400 T, with production-like finishes and in-process inspection.
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03 · Assemblies
Welded & Formed Assemblies
TIG/MIG welded frames, brackets and sub-assemblies checked for fit, squareness and finish.
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04 · Tooling
Multi-stage Stamping Dies
Tooling built around part geometry, material and annual volume, with dimensional validation before handover.
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05 · Finishing
UV-Cured Painted Parts
Liquid and powder finishes for durable color, texture and corrosion protection on formed metal parts.
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06 · Custom work
Your Drawing, Engineered for Production
Send STEP, DXF or PDF files for a DFM review, material recommendation and quotation within 24 hours.
Start an RFQ →Custom sizes, materials and finishes are available across all product families.Browse the full catalog →
What we build
Custom sheet metal parts, from one-off prototypes to production runs
We manufacture enclosures, brackets, chassis, front panels, busbars and welded assemblies. Laser cutting, bending, stamping, welding, hardware insertion and finishing all run in-house, so tolerances and lead times stay under one team.
Send a STEP, DXF, DWG or PDF and our engineers review the flat pattern, bend sequence and assembly before quoting. You receive manufacturability feedback and pricing within one business day.
Enclosures & Chassis
0.5–3.0 mm steel or aluminum, powder-coated or anodized, with PEM inserts and mechanical assembly.
Brackets & Mounts
Laser-cut and bent prototypes or high-volume stamped brackets with repeatable hole position.
Front Panels & Bezels
Brushed, anodized, powder-coated and silkscreened panels with tight cosmetic control.
Busbars & Copper Parts
C1100 and H59 copper or brass, deburred and tin or nickel plated for electrical assemblies.
Welded Assemblies
TIG, MIG and spot-welded frames with PEM hardware, rivets and mechanical sub-assembly.
Large-format Parts
Sheets up to 3000 × 1500 mm, cut and formed without splicing for large panels and frames.
Manufacturing processes
Five processes under one roof
From flat pattern to finished, painted and assembled part — no external subcontracting for the core steps.
Fiber Laser Cutting
High-power fiber laser cutting for carbon steel up to 20 mm, aluminum up to 12 mm and stainless steel up to 10 mm, with clean edges and minimal heat distortion.
Steel ≤20 mmAl ≤12 mm3000 × 1500 mm±0.1 mm
CNC Bending
CNC press brakes up to 3000 mm bending length and 200 T, with automated angle measurement and bend-sequence review before production.
3000 mm length200 T±0.5°
Stamping
Single-hit and progressive stamping on 25–400 T presses for brackets, terminals, contacts and structural parts. Tooling is quoted separately.
25–400 TProgressiveHigh volume
Welding & Assembly
TIG, MIG, spot and laser welding, plus PEM clinch hardware, rivets, tapped inserts and mechanical sub-assembly.
TIG / MIGSpot / laserPEM inserts
Surface Finishing
Powder coating in any RAL color, Type II / III anodizing, zinc, nickel and tin plating, galvanizing, brushing, laser engraving and silkscreen.
Powder coatAnodize II / IIIPlating
Engineering Support
DFM review of flat pattern, bend relief, hole-to-bend distance, weld access and assembly sequence — before the first cut.
DFM report24 h replyNDA available
Technical specifications
Materials, tolerances and lead times
Typical capability range. Send your drawing and we will confirm the exact process window for your part.
| Item | Capability |
|---|---|
| Materials | AL 5052 / 6061-T6 / 1050; SUS 304 / 316 / 430; SPCC / SECC / SGCC / Q235 / Q345; C1100 / H59 |
| Sheet thickness | 0.3–20 mm carbon steel; 0.3–12 mm aluminum; 0.3–10 mm stainless steel |
| Max sheet size | 3000 × 1500 mm |
| Max bend length | 3000 mm |
| Linear tolerance | ±0.1 mm |
| Bend angle tolerance | ±0.5° |
| Hole position | ±0.1 mm |
| Surface finish | Powder coating, anodizing, zinc / nickel / tin plating, galvanizing, brushing |
| Hardware | PEM inserts, rivets, clinch nuts, weld nuts, standoffs |
| Prototype lead time | 3–5 days |
| Production lead time | 7–15 days |
| MOQ | 1 pc prototype / 100 pcs production |
| Quality documentation | FAI, dimensional report, material certificate, CoC, PPAP for automotive |
Design guidelines
Design rules that protect cost and quality
Use these six rules at the concept stage to avoid rework, extra setups and cosmetic defects.
01
Uniform bend radiusKeep one bend radius per part, at least 1× material thickness, to reduce setup and tooling changes.
02
Hole-to-bend distanceKeep at least 3× material thickness from hole edge to bend line to avoid distortion.
03
Hole diameterUse a hole diameter equal to or greater than material thickness to avoid punch wear and laser distortion.
04
Minimum flangeKeep flanges at least 4× material thickness or 4 mm, whichever is greater.
05
Bend reliefAdd relief where two bends meet to prevent tearing and cracking at the corner.
06
Weld and finish calloutsSpecify weld type, symbol, finish and cosmetic class directly on the drawing.
Quality & equipment
Built to drawing, verified before shipment
Every lot ships with dimensional records; automotive and medical programs carry additional PPAP and validation documentation.
Equipment
- Fiber laser cutting cells for steel, aluminum and stainless
- CNC press brakes with automated angle measurement
- 25–400 T stamping presses, single-hit and progressive
- TIG, MIG, spot and laser welding stations
- PEM hardware insertion and mechanical assembly
- Powder coating and anodizing lines
- CMM, height gauges and salt-spray testing
Inspection & documentation
- DFM review before tooling or programming
- First Article Inspection (FAI)
- Dimensional report with every lot
- Material certificate and Certificate of Conformance
- PPAP for automotive programs
- Full traceability from raw material to finished assembly
ISO 9001:2015IATF 16949ISO 13485
Industries
Sheet metal for demanding programs
Process selection, finish and documentation are matched to the end market.
AutomotiveBrackets, seat frames, battery trays, under-hood heat shields.Explore automotive →
MedicalDevice housings, carts, instrument frames, stainless enclosures.Explore medical →
ElectronicsChassis, racks, EMI shields, front panels and bezels.Explore electronics →
IndustrialMachine guards, control cabinets, mounting plates.Explore industrial →
Why BAOLAIHUA
One factory, one owner, full traceability
01
In-house processesLaser, bend, stamp, weld, finish and assemble without handing your part between suppliers.
02
DFM before quoteEngineers review flat pattern, bend sequence and assembly risk before pricing.
03
Documented qualityFAI, dimensional reports, material certificates and PPAP where required.
04
Global deliveryExport packaging and worldwide shipping from Shenzhen, with one program manager.
Customer case studies
Representative production programs
Applications from automotive, medical and industrial customers. Client names are withheld where required by confidentiality agreements.
Automotive
Door-system Brackets & Stamped Components
Series parts developed from drawing and flat pattern through tooling, first-article inspection and repeat production.
- Scope
- Stamping, inserts and finishing
- Control
- IATF 16949 · PPAP documentation
- Outcome
- Stable fit and repeatable production
Medical
Equipment Enclosures & Internal Brackets
Cleanable enclosures with hardware inserts, controlled flatness and documented first-article inspection.
- Material
- 0.8–2.0 mm stainless / aluminum
- Tolerance
- ±0.1 mm typical
- Control
- FAI · material certificates
Industrial
Control Cabinets, Frames & Welded Assemblies
Laser cutting, forming and welding combined in one workflow to protect fit, squareness and delivery dates.
- Process
- Laser · bending · TIG/MIG welding
- Finish
- Powder coat or liquid paint
- Outcome
- One owner from drawing to assembly
Need a comparable program? Send your drawing, target quantity and finish requirements for a DFM review and quote within 24 hours.
FAQ
Questions buyers ask before sending drawings
What is the maximum sheet thickness you can cut?
Up to 20 mm carbon steel, 12 mm aluminum and 10 mm stainless steel on our fiber laser cells. Thicker sections can be reviewed as a welded or machined alternative.
What tolerance can you hold?
±0.1 mm linear and hole position, with ±0.5° bend angle. Tighter features are reviewed during DFM against material, thickness and part size.
What is the largest part you can make?
Up to 3000 × 1500 mm sheets for cutting and forming. Welded assemblies can be larger than the sheet size.
What is the minimum order quantity?
One piece for prototypes. Production volumes typically start at 100 pcs, depending on process and material.
Do you charge tooling for sheet metal?
Laser cutting and bending are programmed, not tooled. Stamping requires hard tooling, which is quoted separately based on part complexity and annual volume.
Can you supply a finished assembly?
Yes. We handle PEM hardware, rivets, welding, painting, anodizing and mechanical sub-assembly, and ship with inspection records.
Send your drawings. Get a DFM review and quote in 24 hours.
STEP, IGES, DXF, DWG or PDF up to 25 MB. NDA available on request. Tell us the material, quantity and target date and we will come back with a manufacturable plan.
STEPIGESDXFDWGPDF
Inside our workshop
Laser cutting, stamping and tooling under one roof
These are our own machines in Shenzhen, not a partner network. That is how we control cut quality, forming accuracy, tooling condition and delivery on the same floor.
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Custom Stamped Metal Centrifugal Blower Wheel - Multi Wing Fan Impeller -
Custom Deep Drawn Stamping Parts - Progressive Die Deep Drawing Cup with Flange
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Custom Sheet Metal Fabrication Parts - Laser Cutting Bending Stamping Bracket
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Multi-stage stretching die
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UV products painting.
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sheet metal parts from China
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OEM ODM Stamping products from China
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stamping molding products OEM ODM
Baolaihua
Customer service staff
