How do you get a metal part made in China that fits the first time? Many buyers ask this before they place an order. Dechen Metal Machining has been a custom metal parts manufacturer in China since 2013. Over the years, its team learned a simple rule. Let the shape of the part and the size of the order pick the method.
A custom metal parts manufacturer in China makes metal parts from your own drawings or samples. It checks the design and shapes or cuts the metal. Then it finishes, tests and packs each part. You will see how each method works and which metals are used. You will also learn how an order moves and what to look for in a supplier.
Key Facts at a Glance
| Factor | What Dechen States |
| Company | Cangzhou Dechen Metal Products Co., Ltd. |
| Founded | 2013 |
| Location | Nanpi County, Cangzhou City, Hebei Province, China |
| Factory area | Over 10,000 m² |
| Equipment | 80+ sets of precision production equipment |
| Main processes | Stamping, deep drawing, sheet metal fabrication, CNC machining |
| Quote time | Binding quote within 24 hours |
Made-to-Drawing Parts: What the Job Covers
Made-to-drawing parts are parts made only from your drawings, samples and notes. Nothing comes off a shelf. Dechen can build your design (OEM) or help create one (ODM). This is the main job of any custom metal parts manufacturer in China.
With custom metal parts manufacturing, you decide six things. You pick the metal, size, shape, finish, logo and export packing. Size also covers tolerance. Tolerance means how far a part may differ from the drawing. It can be set from ±0.01 mm to ±0.1 mm.
Drawings, Samples and Technical Notes
You can send a 2D drawing or a 3D CAD file. Dechen takes .STEP, .IGS and .DWG files. A real sample or a rough idea works too. Dechen signs an NDA, so your design stays private.
Which Processes Does a Metal Parts Maker Offer?
A metal parts maker like Dechen uses four main processes. These are stamping, deep drawing, sheet metal fabrication and CNC machining. Its precision metal manufacturing services also cover finishing. Most parts need some metal forming and some cutting.
The right process depends on the part’s shape, how many you need and how exact it must be. A flat bracket and a battery case with no seam need very different tools.
Precision Stamping With In-House Dies
Stamping uses a die and a press to cut and shape sheet metal. A die is a hard steel tool that gives the part its shape. Dechen does progressive, transfer and drawn stamping. Common steps are blanking, punching, bending, drawing and embossing.
Dechen makes the dies for its custom metal stamping services in its own shop. Parts stay within ±0.05 mm. The metal can be 0.2 to 8 mm thick. Presses run from 10 to 600 tons. One die can last from 300,000 to over 1,000,000 cycles.
Deep Drawing for Seamless Hollow Shapes
Deep drawing is a type of metal forming that presses a flat blank into a hollow part. A blank is a flat piece of sheet cut to size. The finished part has no seam. Dechen uses single-process, compound, progressive and continuous dies.
A progressive die can make up to 800 parts an hour. Blanks can be up to 48 inches across. Finished parts can be ½ inch to 24 inches wide and up to 24 inches deep. They are often used as battery cases, sensor housings and other metal cases.
Sheet Metal Fabrication for Boxes and Panels
Sheet metal fabrication turns flat sheets into boxes, brackets, panels and chassis. Dechen cuts the metal with lasers and CNC punches. Then it bends, welds, rivets and puts the parts together. It uses MIG, TIG and spot welding. Dechen says it has delivered over 1,000 sheet metal projects.
CNC Machining for Complex, Detailed Parts
CNC machining uses computer-controlled tools to cut metal into detailed shapes. Dechen offers 3, 4 and 5-axis milling, turning, wire EDM and deburring. Deburring removes sharp edges. This process needs no die. So it works well for samples, small orders and precision components with threads or fine details.
Side-by-Side Process Comparison
| Process | Main Operations | Stated Tolerance | Standard Lead Time |
| Stamping | Progressive, transfer, blanking, piercing | ±0.05 mm | 5 to 25 business days |
| Deep drawing | Multi-stage drawing, ironing, necking, flanging | ±0.05 mm diameter, ±0.1 mm height | 5 to 25 business days |
| Sheet metal | Laser cutting, CNC bending, welding | ±0.2 mm (bending) | As fast as 5 to 10 days |
| CNC machining | 5-axis milling, turning, wire EDM | Up to ±0.0001 in | Quoted per project |
Tight tolerances cost more. So ask for them only where the part must fit closely. The precision metal components guide tells you more about tolerance and how to pick a metal.
Contract Manufacturing From Prototype to Volume
Contract manufacturing means one company makes your part from the first sample to the last batch. As a custom metal parts manufacturer in China, Dechen does this in four steps.
From DFM Review to an Approved Sample
- You send a drawing, a sample or an idea. Dechen’s engineers give free DFM advice. DFM means small design changes that make a part easier to build.
- Dechen makes a sample. You check its size and quality.
Batch Production, Inspection and Shipping
- Mass production starts once you approve the sample.
- Each order gets a full check of size and look. Then it is packed for export and shipped on time.
Typical Delivery Cycle by Process Type
You get a firm, binding quote within 24 hours. Sheet metal parts can ship in 5 to 10 days. Stamping, deep drawing and sheet metal orders take 5 to 25 working days. Faster options are also available.
A new die takes extra time before the first run. Ask any custom metal parts manufacturer in China to show this time in the quote.
Metals and Finishes Behind Every Part
Dechen works with common metals and with metals that are hard to shape. Its full metal grades list includes aluminum, stainless steel, cold rolled steel and titanium. Copper, beryllium copper and nickel alloys such as Inconel are on the list too.
Metal Grades Listed for Custom Parts
- Aluminum: 5052, 6061 and 7075
- Stainless steel: 304, 316/316L and 17-4PH
- Beryllium copper: C172, good for very small stamped parts and connectors
- Cold rolled steel: 1005 to 1018
- Titanium: used in medical and car parts
Secondary Finishing Before Shipment
Finishing is the work done after a part is shaped or cut. Dechen can heat treat, laser mark, laser weld, tumble, anodize, paint and passivate parts. Tumbling smooths rough edges. Passivation helps stainless steel resist rust. Dechen can also put parts together and pack them, so your precision components arrive ready to use.
Check a Custom Metal Parts Manufacturer in China
A good custom metal parts manufacturer in China should show proof in five areas. Look at the factory size, quality checks, certificates, delivery time and main skills.
Factory Scale and Equipment Capacity
Dechen opened in 2013. It sits in Wujiafang Industrial Park, Wumaying Town, Nanpi County. The factory is over 10,000 m² in size. It has more than 80 sets of precision machines. Dechen’s company profile shows that research, production and sales all happen in one place.
Quality Control and Factory Certification
Dechen checks the raw metal when it comes in. Workers check the parts again while they are made and before they ship. For deep drawn parts, the first piece of every batch is checked. Then at least 5% of the batch is pulled out and checked too.
Dechen says it follows ISO 9001 quality rules. It can trace every batch back to the metal used to make it. Its stamping page also lists ISO 9001:2015, ISO 13485:2016 and AS9100D. ISO 13485 is for medical parts, and AS9100D is for aerospace parts.
A Clear Focus on Four Core Processes
Dechen keeps to four main jobs. It does stamping, deep drawing, sheet metal work and CNC machining. Its metal forming work can handle tough metals like titanium, Inconel and nickel alloys. You will find its precision components in cars, medical devices, electronics, power systems, home appliances and farm equipment.
FAQs
What does a custom metal parts manufacturer do?
A custom metal parts manufacturer in China makes metal parts from your drawings or samples. It does every step, from checking your design to shipping the parts.
- It checks the design, shapes or cuts the metal, then finishes and tests each part
- It can make a few samples, a small batch or a big order
What processes does a custom metal parts manufacturer offer?
Most offer four main processes: stamping, deep drawing, sheet metal work and CNC machining. After that, parts often get a finish, such as anodizing or passivation.
- Stamping and deep drawing work best for big orders
- CNC machining works best for samples and fine details
Can one supplier handle prototypes and mass production?
Yes, one supplier can do both if it has several processes under one roof. With contract manufacturing, Dechen takes sample, small and large orders.
- Fewer handoffs mean fewer mistakes
- Your approved sample sets the standard for every batch
What tolerances can each process hold?
Stamping can stay within ±0.05 mm. Deep drawing stays within ±0.05 mm across (diameter) and ±0.1 mm in height. Sheet metal bending stays within ±0.2 mm.
- Dechen says CNC machining can reach ±0.0001 inch
- Custom orders can be set from ±0.01 mm to ±0.1 mm
Which files do I need to get a quote?
You need a 2D drawing or a 3D CAD file. Dechen takes .STEP, .IGS and .DWG files. Also add notes on the metal, quantity and tolerance.
- Dechen sends a binding quote within 24 hours
- An NDA keeps every file private
How long does a custom metal parts order take?
A normal order takes 5 to 25 working days for stamping, deep drawing and sheet metal. Simple sheet metal parts can ship in 5 to 10 days.
- Faster options are available
- A new die adds time to the first run
Conclusion
Pick the process that suits your part’s shape and how many you need. Ask for tight tolerances only where the fit really counts. Before you order, look at the factory’s size and how it checks quality.
Do you need stamping, deep drawing, sheet metal and CNC work in one place? Dechen Metal Machining is a custom metal parts manufacturer in China that can help. You get a firm quote within 24 hours. Dechen makes its own dies. It also tracks every batch. So your made-to-drawing parts go from file to shipping with fewer hands in between. Send your files to get your quote.
