Sheet Metal Fabrication Services

Get your custom sheet metal parts and assemblies as fast as days

Online sheet metal cutting and bending service to produce durable and end-use metal parts

Receive an instant quote online on custom-formed sheet metal prototypes and production parts

Custom Sheet Metal Fabrication Services - Rapid Sheet Metal Prototyping and Production

Runsom Precision employs sheet metal technology to bend, punch, and cut standard gauge metals for both rapid prototypes and low to high-volume production runs. What set us apart from other conventional sheet metal shops is our incredible capacity and proficiency in sheet metal manufacturing of end-use and durable metal parts or components coupled with broad material selections and finishes matching your needs.

From production, surface treatment, assembly to final shipment, Runsom Precision always allows you to track your order. And we focus on model design, user experience, and every detail and matter at every stage of production. In order to help global product developers, designers, and manufacturers seize more opportunities in the marketplace, we do our best to shorten the cycle time and ensure on-time delivery to help their products get to market quickly - whether it's a single prototype or 1,000 pieces in bulk.

sheet metal part
sheet metal fabrication

Sheet metal fabrication is a subtractive manufacturing process involving forming parts from thin metal sheets by cutting, bending, folding, punching, and assembling. Sheet metal can be cut, bent, or stretched into almost any shape, usually by cutting and burning the metal. Sheet metal parts are usually highly precise and durable, making them particularly preferred by engineers to use for end-use applications such as enclosures, brackets, and chassis.

If you rightly have demands on custom sheet metal fabrication or outsourcing manufacturing of your sheet metal parts to a reliable supplier in China, Runsom Precision may be your premier choice. You have access to get in touch with our team of knowledgeable engineers and machinists to get a fast and cost-effective solution for any kind of parts.

How Does Sheet Metal Fabrication Work?

metal sheet

The sheet metal fabrication processes start with removing materials from thin sheet metal stock placed on a flat bed following programmed part patterns to form desired shapes by cutting tools. This operation can be finished with a variety of subtractive machining processes. A sheet metal punch, shear, laser, waterjet, or plasma can generate additional features such as internal holes and edge features according to the part geometry. The second stage is material deformation. After being cut, the parts reach the press brake where they are formed into the final geometries with the forming process such as bending. The last stage is to assemble pieces of sheet metal or fit them together with other components that are not made from sheet metal into a complete product. In many cases, surface finishing operations are needed to enhance mechanical properties.

Advantages of Sheet Metal Fabrication

The sheet metal fabrication process is the most cost-effective choice for on demand production of sheet metal parts and prototypes with uniform wall thickness.

High durability, malleability, and pressures tolerance for prototyping or end use

Lower prices and shorter cycle time due to reduced tooling time and setup costs

Cost-effectively scale to low or high production quantities

A wide variety of gauges available in laser cutting or bending

Enhanced construction quality and low maintenance cost and frequency

Low material waste and sheet metal parts are recyclable

Great tolerance to moisture, corrosion, and ultraviolet

High machinability to easily machined into almost any expected shape

Sheet Metal Fabrication Processes Available at Runsom Precision

Thin sheets of metal can be manipulated through different processes as they are more malleable than thick workpieces. Moreover, sheet metal fabrication offers competitive prices for low-volume prototypes and saves costs for high-volume production runs. Runsom Precision offers high precision cutting, bending, punching, and welding, as well as assembly services.

CNC laser cutter

This manufacturing process uses a high-density light beam to cut a thin sheet metal in which CNC is useful in control of either the laser beam or the workpiece. Intense lasers can cut through sheet metals 0.5mm to 20mm thick to prototyping sheets for abundance parts.

Laser Cutting

plasma cutting

Plasma cutting machines have the same processing theory as EDM, that is, using electricity to melt and cut the workpiece. This process cuts through electrically conductive materials by an accelerated jet of hot plasma, especially ideal for custom cutting of gauge sheet metals up to 6" thick.

Plasma Cutting

waterjet cutting

A waterjet cutter is an adaptable tool as it can be easily adjusted depending on the types of materials from pure water cutting to abrasive water cutting without leaving burn marks, making it a perfect method for ensuring critical performance and aesthetic effects. And unlike laser cutting and plasma cutting, it produces no byproducts that might do harm to operators and the environment.

Waterjet Cutting


Sheet metal bending is a manufacturing process that uses dies to generate a V- shape, U-shape, or channel shape along a straight axis in ductile materials. It is applied to shape stainless steel, steel, and aluminum parts, and rapid prototyping of custom sheet metal after the cutting process.


Sheet Metal Materials Available at Runsom Precision

There is a multitude of materials available for sheet metal fabrication. Here are the materials commonly used for sheet metal fabrication. Aluminum is one of the popular materials used for sheet metal manufacturing and its four most common grades are especially suited as sheet metal, that is, 3003-H14, 5052-H32, 6061-T6, and 1100-H14. Stainless steel grade 304 is an ideal option to fabricate sheet metal because of its great weldability, formability, and corrosion tolerance. Grade 316 is recommended when your applications are marine products, valves, pumps, or chemical equipment. For brass, it has high formability, strength, corrosion resistance, and conductivity, so it’s also a perfect material used in the sheet metal fabrication process.

sheet metal enclosure

Aluminum 6061
Aluminum 5052
Learn More Details About Aluminum

Stainless steel 301
Stainless steel 304
Stainless steel 316/316L
Learn More Details About Stainless Steel

Low carbon steel, SPCC

Copper 101
Copper C110
Copper 260 (Brass)
Learn More Details About Brass

If you would like to specify a customized material for your application, please contact us or request an online quote now.

Dimensions & Tolerances of Sheet Metal Fabrication

The two tables below conclude the standard dimension and tolerances of sheet metal parts we produced.

Dimensions of sheet metal parts

Size 47 in. x 119 in. OR 1,193.8mm x 3,022.6mm (max)
Formed part 1.5 in. x 1.5 in. OR 38.1mm x 38.1mm (min)
Flat part 0.5 in. x 0.5 in. OR 12.7mm x 12.7mm(min)
Bend length 10 ft. OR 3.048m (max)

Tolerances of sheet metal fabrication

Bends +/- 2 degree
Offsets +/- 0.024 in. (+/- 0.608mm)
Bend to Edge +/- 0.020 in. (+/- 0.508mm)
Bend to Hole/Hardware/Bend +/- 0.030 in. (+/- 0.762mm)
Hole Diameters +/- 0.010 in. (+/- 0.254mm)
Edge to Edge/Hole; Hole to Hole +/- 0.010 in. (+/- 0.254mm)
Features Separated By Two or More Bends +/- 0.060 in. (+/- 1.524mm)
Hardware to Edge/Hole +/- 0.020 in. (+/- 0.508mm)
Hardware to Hardware +/- 0.030 in. (+/- 0.762mm)

Sheet Metal Prototyping to Production

Rapid sheet metal prototyping services at Runsom Precision can help you to develop prototypes as requested and functional testing of models before it goes into the market, significantly reducing the cost and risk. It’s the right choice to work with us for sheet metal fabrication from prototyping to production.

sheet metal for rapid tooling

Sheet metal manufacturing is an ideal method for rapid tooling to shape and cut sheet stocks into 2D-shaped profiles out of a wide range of high-strength materials.

Rapid Tooling

sheet metal for rapid prototyping

Sheet metal prototyping can produce prototypes out of a variety of metal materials within several days and at low-per-unit costs.

Rapid Prototyping

sheet metal for batch production

Per-unit costs reduce with the increased production scales paired with rich options of materials and high output, making it quite suitable for high-volume and end-use production.

Batch Production

Why Choose Runsom Precision for Sheet Metal Fabrication


Quality and Accuracy Assurance

With ISO 9001:2015 certification, the quality and precision of sheet metal parts we produced will exceed your expectations.

Instant quote

Real-time Online Pricing

A quick and professional quote can be offered in 1-24 hours after you submit an RFQ with clear information like materials, specifications, and finishing options.

functional testing

Infinite Manufacturing Capacity

Our factories have equipped such superior and advanced machinery that extensive capabilities in-house can meet your requirements from design, and prototypes to mass production of your sheet metal parts.


Technical Proficiency in Sheet Metal Parts

By working with Runsom Precision for sheet metal fabrication, you have ready access to our skilled experts and machinists to optimize your model design and get the perfect solution regarding manufacturability and cost savings.

Available Sheet Metal Finishes

The mechanical properties and performance of sheet metal fabricated parts or components can be enhanced through surface treatment. If you want to improve the chemical resistance, appearance attractiveness, and hardness of your sheet metal parts after machining, you can choose from the following finishing options suitable for sheet metal manufacturing.



Anodizing for Sheet Metal Parts





Clear, black, grey, red, blue, gold.

Smooth, matte finish.

Bead Blasted

Bead Blasted for Sheet Metal Parts




ABS, Aluminum, Brass, Stainless Steel, Steel



Powder Coat

Powder Coat for Sheet Metal Parts




Aluminum, Stainless Steel, Steel

Black, any RAL code or Pantone number

Gloss or semi-gloss


Electroplating for Sheet Metal Parts




Aluminum, steel, stainless steel


Smooth, glossy finish


Polishing for Sheet Metal Parts




Aluminum, Brass, Stainless Steel, Steel




Brushing for Sheet Metal Parts




ABS, Aluminum, Brass, Stainless Steel, Steel



If your desired finish is not available in the options above, you can specify what kind of processing method and end result you need for your application and we will customize it specifically to your requirements. Get a custom sheet metal fabrication quote and design analysis online today.

Ready to Get a Sheet Metal Fabrication Quote?

Choose our sheet metal fabrication services, and you will have access to sheet metal parts with complex structures and tight tolerances, as well as assembly services such as welding, installation of PEM inserts, and secondary processing. Under the premise of quality assurance, we will provide our customers with the most competitive and cost-saving sheet metal fabrication solutions and services, whether for small-scale prototyping or large-scale production.

Applications of Sheet Metal Fabrication

Sheet metal fabrication is a versatile manufacturing method for a variety of metal products across a wide range of industries. This process is cost-effective for low-volume, high-mix prototypes, and high-volume production runs. Part of common sheet metal parts are as follows:


Electrical enclosure

Body panels


Parts for computer electronics






Kitchen equipment

Office equipment

Sheet Metal FAQs

Sheet metal fabrication is the manufacturing process of shaping flat metal sheets into desired structures or products through material removal, material deformation, and assembly. Sheet metal can be cut, bent, or stretched into almost any shape, usually by cutting and burning the metal.

The selection of the cutting machine is determined by the gauge of the sheet and the material used, along with other key elements like delivery, tolerances, and geometric complexity as expected. You don’t have to figure out the type of cutting machine suiting your sheet metal as our experts clearly know what kind of equipment, technology, and even materials are best suitable for your project. Thus, just submit your 3D files online and get a professional solution from our experts in fabricating sheet metal quickly.

Generally, the cost of using just a single cutting machine such as a laser cutter to cut a part will spend less than that of multiple forming processes, for instance, cutting, bending, and punching. But most sheet metal parts need to be machined with a combination of different forming processes, and the per-unit costs will reduce by large-volume quantities.

The tolerances of sheet metal fabrication are decided by the features and dimensional details of sheet metal parts necessary for consistent and precise integration and installation.  

To ensure the accurate control of the variables affecting the part precision and manufacturability, our custom sheet metal fabrication services are in accordance with the ISO 2768-mk.

The K factor in the sheet metal process is the ratio of the neutral axis to the thickness of the material. This value varies with various physical properties and the thickness of the material used.

The costs of sheet metal fabricated parts or products depend in every respect including the design, geometric complexity, forming processes, surface finishing operations, and more. Besides these crucial factors, the material costs should be also considered.

Our quote online will include all of these factors and even variables in line with the manufacturability of sheet parts, so request a quote to get started with your project right now.