Address
304 North Cardinal St.
Dorchester Center, MA 02124
Work Hours
Monday to Friday: 7AM - 7PM
Weekend: 10AM - 5PM
The Leader in the Sheet metal fabrication Industry
The pioneer in sheet metal design and production,delivering global sheet metal fabricationsolutions for over 20 years
Precision Sheet Metal Fabrication
Your One-Stop Delivery Partner
Changye is a professional custom sheet metal manufacturer. From tooling design, laser cutting, CNC bending, stamping and welding to surface finishing and assembly, we deliver end-to-end service — serving precision parts such as enclosures, electrical cabinets, chassis and brackets.
Professional Stamping & Engineering Team
Our dedicated stamping design and production team turns your drawings into cost-effective, repeatable parts. With deep expertise in progressive dies and forming, we optimize for manufacturability so you get better parts at a lower unit cost.
- Progressive die & custom tooling
- DFM review to cut cost and boost yield
- Prototypes in days, stable at volume
Specifications
Technical Standards & Capabilities
The ranges below are standard capabilities; special sizes, thicknesses and tolerances can be customized after engineering review.
| Item | Standard Capability | Notes |
|---|---|---|
| Max Sheet Size | 1250 × 3000 mm | Larger sizes available on review |
| Material Thickness | 0.5 – 6.0 mm | Varies by material & process |
| Laser Cut Tolerance | ±0.1 mm | Higher precision on thin stock |
| Bending Length | up to 2500 mm | Multi-axis CNC brake |
| Min Bend Radius | ≥ 1× thickness | Prevents cracking & springback |
| Standard Lead Time | 5 – 7 days | Fast prototypes, stable volume |
| Surface Finish | Powder / Anodize / Plate | Custom colors available |
Materials
Common Materials
Select the right metal by application performance and cost — engineering plastics and special alloys available on request.
Aluminum 5052 / 6061
Cold-Rolled Steel (CRS)
Hot-Rolled Steel (HRS)
Stainless 304 / 316
Copper / Brass
Galvanized / Galvalume
How to Choose Materials
- Aluminum: light, rust-resistant, easy to form — ideal for enclosures and brackets
- Stainless: corrosion-resistant, high strength — for food, medical and outdoor use
- Steel: cost-efficient, versatile — for structural parts and volume production
- Copper / Brass: excellent conductivity — for electrical connectors
Process
From Drawing to Finished Part
Engineering review first, every step traceable — the certainty and controllable cost that “one-stop” brings.
1
Design Review
Engineering team validates drawings, optimizing cost and manufacturability
2
Cutting & Blanking
Precision cutting via laser, stamping or shearing
3
Bending & Forming
CNC brake shapes the 3D structure
4
Welding & Assembly
Welding, riveting and fastener joining
5
Surface Finishing
Powder, anodize or plating protection
6
Inspection & Delivery
Full inspection, packaging and direct shipment
Our Projects
Capabilities
Sheet Metal Fabrication Capabilities
Covering the most common foundational processes — cutting, bending, stamping, welding and surface finishing — formed precisely to your drawings.
Laser Cutting
Fiber laser high-precision blanking for aluminum, stainless, carbon steel and more — clean edges, small heat-affected zone, ideal for complex profiles and fast low-volume prototyping.
Tolerance ±0.1 mmCNC Bending
Multi-axis CNC press brake forming with flexible V- and U-bends. Controlled inner radii ensure consistent angles and stable dimensions across the run.
Up to 2500 mmStamping
Professional stamping design and production — blanking, piercing, drawing and progressive dies in one setup — cost-effective for medium-to-high volume with repeated hole patterns.
Prototype → ProductionWelding & Joining
Resistance welding, TIG and MIG welding, plus riveting and fastener installation for strong assemblies and structural connections.
MIG / TIG / RivetingSurface Finishing
Powder coating, anodizing, plating, chem film and more — balancing corrosion resistance, wear and appearance, with custom colors available.
Powder / Anodize / PlateAssembly & Delivery
Hardware installation, PEM inserts, screen printing and laser marking — finished goods assembled and shipped directly, reducing your sourcing and management overhead.
Direct ShipmentCapabilities
Core Manufacturing Capabilities
A full-process sheet metal shop — from blanking and forming to finishing and assembly — backed by standard capabilities your project can rely on.
Max Sheet Size
1250 × 3000 mm
Material Thickness
0.5 – 6.0 mm
Laser Cut Tolerance
±0.1 mm
Max Bending Length
2500 mm
Common Materials
Al / Steel / SS / Cu
Surface Finish
Powder / Anodize / Plate
Industries
Industries Served
Sheet metal parts are widely used wherever precision and reliability are demanded.
Industrial Automation
Electrical Equipment
Robotics
Automotive & Transport
Communications & Enclosures
New Energy Equipment
Medical Devices
Construction & Infrastructure
Frequently Asked Questions
What processes are included in sheet metal fabrication?
The most common sheet metal processes include cutting (laser, stamping, shearing), bending &forming (CNC press brake), stamping (blanking, piercing, drawing), welding & joining (resistance,TIG/MIG, riveting) and surface finishing (powder coating, anodizing, plating). Changye provides thefull flow from blanking to assembled delivery.
How do I get a quote? What information is needed?
Please prepare CAD drawings (e.g. DWG/DXF/STEP) or a clear product image, and specify material, thickness, quantity, surface finish and lead time. The more complete the data, the faster and more accurate the quote. Submit via the form at the bottom of the page and our engineering team will reply within 1–2 business days.
Which materials are supported, and what thickness range?
We routinely support aluminum (5052/6061), cold-rolled steel, hot-rolled steel, stainless (304/316), copper/brass and galvanized sheet, with material thickness roughly 0.5–6.0 mm. Special alloys or engineering plastics can be taken on after engineering review.
What level of precision and tolerance can be achieved?
Standard laser cut tolerance is about ±0.1 mm; bend angle and dimensions are controlled by tooling and material thickness. The minimum inner bend radius is generally no less than 1× material thickness to avoid cracking. Tighter tolerances can be reached through process optimization after review, but over-tight specs raise cost — we recommend tolerances based on actual use.
What are the minimum order quantity and lead time?
We support everything from single prototypes to medium-to-high volume production, with no hard minimum order quantity. Prototypes are typically delivered in 5–7 days; volume lead times are assessed by quantity and process complexity. With a flexible line and standardized process, unit cost drops as volume rises.
What surface finishing options are available?
We offer powder coating (custom colors, wear- and corrosion-resistant), anodizing (mostly aluminum, can be colored), plating (e.g. zinc, nickel), chem film and more. Choose powder/anodize for decorative needs and plating/chem film for functional corrosion resistance — details can be discussed with our engineering team.
Can you provide one-stop service from tooling to finished parts?
Yes. Changye runs a dedicated stamping design and production team delivering one-stop metal manufacturing — from tooling design, stamping and machining through welding, surface finishing to assembly and after-sales. This reduces multi-supplier coordination and improves consistency and lead-time reliability.
Discuss Your OEM Manufacturing Requirements
Looking for a reliable die casting manufacturer for your custom metal parts?
Connect with Pen Manufacturing to review fabrication challenges, production timelines, engineering specifications, and long-term manufacturing goals.