Partner with Shuangrui to reduce manufacturing costs by 30% and boost efficiency.

Guangzhou Shuangrui Precision Manufacturing Co., Ltd.
Custom Sheet Metal Fabrication for Global OEMs2026-05-15T03:46:59+00:00

Sheet Metal Fabrication Services for OEMs

Precision sheet metal manufacturing for complex enclosures, frames, and assemblies. Laser cutting, CNC bending, and welding under a strict quality system from prototype to mass production.

⏱
7–15 Days
Lead Time
🛡
≥98%
First-Pass Yield
🏭
260+
Machines

Get a Custom Quote in 12 Hours

Upload your drawings for engineering review.

Blank Form (#4)

Why Choose SR MFG for Sheet Metal Fabrication?

Trusted partner for OEM sheet metal programs.

One-Stop Manufacturing

From DFM review toproduction and final delivery.

Stable Delivery Performance

98.7% on-time delivery ratebased on SR MFG factory data.

High First-Pass Yielda

98% shipment yieldfor repeat OEM programs.

Engineering Support

In-house DFM support to improvecost, structure, and assembly efficiency.

⚙ German-Brand Equipment
◎ ISO / IATF Certified
◇ China-Based Pricing
🌐 Global Delivery
◈ Auditable Factory

SR MFG vs. Common Sheet Metal Suppliers

Dimension SR MFG Common Suppliers
Equipment 260+ in-house high-precision manufacturing machines Mixed in-house / outsourced capacity
Certifications ISO 9001, IATF 16949 (automotive), ISO 14001;SGS-audited factory Often ISO 9001 only; automotive / environmental certifications not always available
Pricing  China-based OEM pricing, globally competitive US/EU pricing, typically higher
Lead Time Standard 7–15 day production lead time, DDP shipping options available  Marketing “1-day” offers; actual production lead time often longer and less predictable
Customization OEM / ODM with low MOQ and engineering support Higher MOQ, limited customization options
Response Time Manual quote within 12 hours, complex parts supported Automated quotes; complex parts require re-quoting
Technical Support In-house engineers, DFM optimization included Minimal direct engineering support
Trust SGS verified, video factory tour and on-site audits No factory access; trust based mainly on brand

How SR MFG Keeps OEM Sheet Metal Projects Under Control

From engineering review to delivery, every stage is managed with traceable production and quality control.

01

Mass Production Planning

Programs are prepared for scalable andrepeatable production from the prototype stage.

02

Production Visibility

Photos, videos, and progress updates help you track key production stages.

03

DFM Engineering Support

Our engineers help optimize structure, reduce welding, and improve assembly efficiency.

04

Auditable Factory

Online or on-site factory audits are available for OEM customers.

05

Delivery & Quality Control

Delivery performance and shipment quality are supported by controlled production records.

What Is Sheet Metal Fabrication?

Sheet metal fabrication is the manufacturing process of turning flat metal sheets into custom parts, enclosures, brackets, panels, and assembled components through cutting, bending, welding, and surface finishing.

For OEM and custom manufacturing projects, the goal is not only to produce a single metal part, but also to deliver ready-to-assemble finished components. These components must meet the technical requirements of the drawings, fit directly into the customer’s production line, and maintain consistent quality across multiple production batches.

SR MFG provides sheet metal fabrication services for a wide range of materials, including carbon steel, stainless steel, galvanized steel, aluminum alloy, and copper. Each project includes engineering drawing review, standardized production control, and final product inspection before delivery.

Capabilities

SR MFG’s Precision Sheet Metal Fabrication Capabilities

We provide comprehensive, high-quality sheet metal manufacturing services, consistently meeting customer requirements with efficiency and reliability.

2

Factories

Two manufacturingfacilities in operation.

80K-120K

Monthly Capacity

Overall sheet metalfabrication capacity.

98%

Yield Rate

Consistent qualitywith strict control.

Manufacturing Parameters & Lead Time

Typical specifications and production timelines for custom sheet metal fabrication projects.

⚙

Technical Parameters

Item Parameter
Thickness 0.8–20 mm, up to 25 mm on request
Accuracy ±0.1 mm
Max Size 1500 × 3000 mm
Order Volume 1–10,000+ pcs
◷

Production Cycle

Item Parameter
Prototype Lead Time 7–12 days
Small Batch Production 7–12 days
Mass Production 2–4 weeks
Scheduled Production Available for annual plans

Custom Sheet Metal Manufacturing Processes

From cutting and forming to welding. finishing, and final assembly. SR MFG controls each process for repeatable OEM production.

01

Laser Cutting

High-precision cutting of flat sheet into profiles with clean edges and tight tolerances for further forming and assembly.

02

Metal Bending

Forming flat blanks into accurate angles, flanges, and channels while controlling bend radius, position, and repeatability.

03

Metal stamping

High-speed punching and forming with custom dies to produce consistent parts for medium to high-volume OEM programs.

04

Sheet metal welding

Joining components into rigid assemblies using MIG, TIG, and spot welding with controlled distortion and clean seams.

05

Metal Finishing

Applying surface treatments such as powder coating, plating, and anodizing to improve corrosion resistance and appearance.

06

Finishing

Milling, drilling, tapping, and countersinking critical features to achieve final tolerances and assembly-ready fit.

▦

Detailed 12-Step Manufacturing Workflow

Click to view the complete manufacturing process from drawing review to final delivery.

⌄
01

Drawing Review

Review drawings, requirements, tolerances, and production feasibility before manufacturing.

02

Material Procurement

Select qualified sheet metal materials and confirm batch traceability before production.

03

Prototype Fabrication

Build samples for fit, function, structure, and process validation before batch production.

04

Laser Cutting / CNC Punching

Cut and punch accurate blanks with controlled profiles, holes, and edge quality.

05

Forming / Bending

Form sheet metal into required angles, flanges, channels, and structural features.

06

Welding & Riveting

Join parts into rigid or load-bearing assemblies with controlled distortion.

07

Deburring & Chamfering

Remove burrs, level parts, and prepare clean edges before finishing or assembly.

08

Surface Finishing

Apply powder coating, plating, anodizing, brushing, or other protective finishes.

09

Quality Inspection

Check dimensions, appearance, coating, fit, and key quality requirements.

10

Assembly

Complete sub-assembly, hardware installation, and final assembly as required.

11

Packaging

Protect finished parts with suitable packing methods for safe transportation.

12

Shipping & Acceptance

Arrange delivery and support final customer acceptance after shipment.

For the complete list of inspection items and tolerance requirements, please refer to the inspection specifications provided by our team.

◎

Typical Machining Capabilities

We maintain tight tolerances and consistent quality for precision sheet metal components.

±
±0.10–0.20 mm
Critical Dimensions
Controlled within ±0.10–0.20 mm based on part complexity and drawing requirements.
▱
≤0.5 mm / 300 mm
Flatness
Flatness tolerance up to ≤0.5 mm per 300 mm for suitable sheet metal structures.
⊥
≤0.20 mm
Perpendicularity
Perpendicularity on key interfaces controlled within ≤0.20 mm when required.
✓

Traceable Production System

Our MES connects equipment, operators, process checkpoints, and inspection data for full production traceability.

01
Material Batch & Supplier
Material batch, heat number, and supplier information are recorded.
02
Machine & Program Used
Machines, tools, and production programs are tracked during production.
03
Operator & Shift
Operator name and production shift information can be captured.
04
In-Process Checkpoints
Key process parameters and inspection results are recorded.
05
Final Inspection Results
Final inspection data is linked to each part, batch, or order.
✓
Controlled Process Parameters
✓
In-Line Sampling Inspection
✓
SPC Data Monitoring
✓
Stable Quality & Repeatability
Batch-to-Batch Consistency: Controlled process parameters, in-line sampling inspection, and SPC data monitoring help each production run meet defined dimensional and cosmetic standards for OEM sheet metal components.

Materials & Finishing Options.

A wide range of sheet metal materials and surface finishes to meet your performance,corrosion resistance, appearance, and budget requirements.

Common Materials

Popular sheet metal materials for most OEM applications.

Carbon Steel

SPCC, SPHC, Q235,A36

Galvanized Steel Sheet

GI、G60、G90、AL‑Zn / GL、SECC / DC01+ZE

Stainless Steel

304、316、430、201、301

Aluminum Alloy

AA 1060 / AA 1100、AA3003、AA 5052-H32、AA 7075-T6、AA 6061-T6

Copper / Brass

T2/T3、H62/H59、H68/H70、HPb59-1、QSn6.5-0.1、QA19-4 、BZn15-20

Titanium Alloy

TA1/TA2、TC4、TA7、TC21、Ti31、Ti80

Common Materials

Popular sheet metal materials for most OEM applications.

Powder Coating

Durable,corrosion
resistance,various colors.

Anodizing

Wear resistanceand enhancedcorrosion protection.

Electroplating

Zinc, nickel, chromeand other platingfinishes.

Powder Coating

Custom paint finish for color and protection.

E-coat

Uniform dip coating for complex metal parts.

Blasting

Matte blasted texture for surface preparation.

Phosphating

Conversion coating for paint adhesion support.

Passivation

Stainless treatment for corrosion resistance.

Need help optimizing your sheet metal design?

Our engineering team can review your drawings and suggest DFM improvementsto reduce cost and ensure manufacturability.

Quality Assurance & Certifications

SR MFG is a certified sheet metal fabrication partner for global OEMs.

Quality is managed as a system, from raw material inspection to final packaging, with every part checked and recorded.

  • 100% inspection before shipment:dimensional and visual checks on every part or batch as required.

  • Material traceability:batch-level traceability for all raw materials and coatings.

  • Certified quality systems:ISO 9001 and IATF 16949 for automotive-grade quality; ISO 14001 for environmental management.

  • NDA & IP protection:NDAs signed on request; drawings and data handled under strict access control.

  • Continuous improvement:internal audits and Kaizen activities to reduce defects and stabilize processes.

Our Certifications

BAOXUAN IOS-9001

IS09001

Quality Management System

SR MFG IATF 16949

IATF 16949

Automotive Quality Management

SR MFG IOS14001

IS0 14001

Environmental Management

Certificates Available for Review

These certificates and reports are available for review during audits or upon request.

Key Performance Indicators

7days

average lead time for typical sheet metal parts

98.7%

on-time delivery rate (SR MFG factory 2024 data)

24H

typical RFQ or engineering response time on working days

Who We Serve

Sheet Metal Fabricationfor OEM Industries

SR MFG manufactures custom sheet metal parts,enclosures, brackets, panels, and assemblies forOEM projects across a wide range of industries.

  • ReliableQuality
    Certified quality system ensures consistentperformance and product reliability.

  • On-time Delivery
    Lean production and strict process controlensure on-time delivery.

  • Engineering Support
    DFM review, material selection, and customsolutions from prototype to mass production.

Data Center

ConsumerElectronics

Electrical Equipment

Automotive

Industrial Equipment

Energy&Power

Medical Equipment

Aerospace

OutdoorEquipment

Sheet Metal Products Designed and Manufactured by SR MFG

SR MFG has collaborated with global OEMs to co-design and manufacture a variety of custom sheet metal products, covering enclosures, chassis, panels, brackets, and structural components.

Custom Sheet Metal Parts with PEM Nuts

Smart Home Control Metal Enclosure

Self-Service Kiosk Metal Cabinets

Outdoor Control Box Enclosures

Welded Machine Base Frames

Solar Inverter Sheet Metal Enclosures

Medical Console Enclosures

EV Battery Pack Lower Tray

1U Rack Blanking Panels

FAQs About Sheet Metal Fabrication

If you’re asking this, you’re probably juggling performance with budget. The short answer? Cold-rolled steel (like SPCC or DC01) is your go-to for most budget-conscious jobs. It’s cheap, easy to work with, welds like butter—but yeah, it rusts if you don’t coat it. Want corrosion resistance without going bankrupt? Look at galvanized steel. Want lightweight and still durable? Try 5052 aluminum—but be ready to spend more. We’ve worked on enough builds to tell you straight: 70% of “just make it work” projects land on SPCC.

Hell yes—if your shop’s built for it. A lot of people think sheet metal only works for mass production, but modern sheet metal prototyping for low-volume runs is a real thing now. CNC lasers, bending, and modular tooling mean you can get 5, 10, 50 pieces made without blowing your budget. We do this all the time for R&D teams, startups, and even Kickstarter hardware projects. Don’t overthink it: if you have CADs, we can make parts. No MOQ drama.

Let’s cut the fluff: Rapid sheet metal fabrication in China can be done in as little as 3–7 days if your drawings are clean and you’re not asking for titanium unicorns. We’ve delivered full sheet metal enclosures in under a week. The key? Clear CADs + confirmed material specs + no drama in communication. Pro tip: choose a factory with in-house tooling and QC—like ours—so you’re not stuck waiting on 3rd-party delays.

Yes—and if you can’t, run. Any serious sheet metal shop should accept .STEP, .IGS, or .DXF files straight from your design team. We work with international clients daily, so we know how to clean up your drawings, flag missing bends or hole specs, and give you feedback fast. We’ve had clients literally drag-and-drop files into our portal and get a quote in hours. Just make sure your files aren’t full of “TBD” notes unless you like surprises.

Honestly, how to vet a Chinese sheet metal factory is the #1 question on every engineer’s mind. Here’s the cheat sheet:

  • Ask for ISO 9001 certification

  • Request sample pics or video walk-throughs

  • Check lead times and communication speed

  • See if they offer full DFM feedback and material traceability

We tick all the boxes—and yeah, we’ll even show you our ERP system if you ask nicely.

Our view:
  • Stainless steel: high corrosion resistance, excellent for harsh environments, sanitary or outdoor use. But heavier and costlier.
  • Aluminum: lightweight, good thermal conductivity (useful for electronics enclosures or heat-dissipation parts), still decent corrosion resistance when finished correctly.
  • Galvanized steel / coated mild steel: cost-effective for indoor/housing parts where weight isn’t critical and environment is milder.
  • Material behaviour during fabrication matters (bending, welding, finishing) – you’ll want a shop that knows how your chosen alloy behaves.

Good question. Here’s the breakdown:
  • Laser cutting: high precision, especially for complex profiles or thin gauges, minimal tool wear. Cost higher than basic shearing but gives you tighter tolerances and cleaner edges.
  • CNC bending/forming: critical for maintaining dimensions across a batch. More advanced press brakes (with sensors, compensation) reduce variation. If done poorly, parts may not assemble properly later.
  • Welding (TIG/MIG, robotic vs manual): TIG is cleaner for thin or exotic metals; MIG better for heavier frames. Robotic welding improves consistency and reduces heat distortion—but investment is higher.
  • Finishing/Coating: powder coat, anodize, other surface treatments add cost/time but are essential for durability, corrosion resistance, appearance.
  • Trade-off: more advanced tech = better precision & repeatability, but higher initial cost. For consistent OEM performance you’ll want a fabrication partner equipped for volume, not just “we do odd jobs”.

Sheet Metal Manufacturing Technical Resources

RFQ

May 22, 2026|

Note: In some industries, especially construction and government services, RFQ may also mean Request for Qualifications. That process [...]

Read More

Inspection Standards

May 21, 2026|

Types of Inspection Standards in Sheet Metal Fabrication International and Industry Standards Most sheet metal inspection standards are [...]

Read More

Quality is our standard, and customer satisfaction is our pursuit.
We are committed to providing high-standard sheet metal fabrication services, utilizing advanced equipment and a professional technical team to ensure that every product we produce can withstand rigorous testing. Our goal is to deliver high-quality, low-tolerance, and fully customizable sheet metal solutions for our clients.

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E: Scarlett@baoxuanmetal.com

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