KDM Sheet Metal Dome Fabrication

KDM specialized in manufacturing sheet metal domes for many years. Our sheet metal dome fabrication services can surely meet your high expectations.

  • Available in rectangular, oblong, or oval shapes
  • Made of sheet metals such as stainless steel
  • Offered with different thicknesses and dimension
  • Nickel-plated or gold plated options

Your Sheet Metal Dome Fabrication Supplier

Otherwise called doming, sheet metal dome fabrication is a method of converting sheet metals into dome products. It is commonly made of stainless steel and aluminum sheets.

KDM Sheet metal domes are mainly used in connection with membranes, flex circuits, or PCBs. We can shape them in numerous forms such as triangle, four-legged, round, oblong, or custom. They are used mostly for electronic industries.

If you need a professional manufacturer for your sheet metal dome fabrication needs, you can trust KDM. We use different tools and equipment in the fabrication. We used a hand torch, flat file, dividers, sheet metal, and so on.

Please message us with your inquiries!

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Sheet Metal Dome Series

Copper Dome Pendant

Copper dome pendants are used as task lighting. With dynamic and bold designs, these domes are ideal for any commercial and residential furnishing. It has a polished finish.

Spinning Dome Cover

Spinning dome covers are usually used as food covers. Known as cloche domes, they are used to keep food warm at fancy tables. It is made from copper, aluminum, or steel.

Brushed Stainless Steel Dome

Brushed stainless steel dome is designed with excellent durability and ultimate strength. Used in architectural communities, these domes are aesthetically pleasing.

Aluminum Dome

Aluminum dome is a self-reliant cover typically used in tank farms and refineries. It protects the storage item and the basic tank parts against atmospheric influences.

Decorative Domes

Decorative domes are commonly used as fire pit covers, vacuum chambers, vacuum domes, steel end caps, or domed garbage can tops. They have anti-corrosion properties.

Copper Lampshade Dome

Copper lampshade domes are attractive lighting equipment. It is perfect for commercial and home fit-outs. Plus, they also come in a polished and stylish finish.

6 Products Found.

Sheet Metal Dome Features


Every dome design has excellent strength. Aside from that, they offer attractive appeal and durable properties.


Allow us to custom your sheet metal dome requirements. We can provide custom cut, thickness, and coating.


Even exposed outdoor, our sheet metal domes can resist any weather condition and remain corrosion-free.


We provide sheet metal domes with accurate structure and high precision. All types can benefit your business.

What is the Process of Sheet Metal Dome Fabrication?

In the first step, we cut the flat sheets –common cuts between 6 and 8mm. We used advanced cutting tools to fit required hemisphere shapes and sizes.

The second step is the shaping process. Once the flat sheets have been cut, their edges are formed for complete smoothness. After that, we refine the shape.

Lastly, the finishing process. We offer custom finishing services such as chrome coating, powder coating, anodization, bead blasting, and so on. We will base our finishing production according to your surface coating requirements.

What is the Process of Sheet Metal Dome Fabrication
Sheet Metals We Can Make

Sheet Metals We Can Make

We provide a wide range of sheet metal options for custom domes fabrication. Whether the domes are supposed to use in the lighting industry, architecture, or decorations, we can determine the right materials to use for every purpose.

Our professionals make use of sheet metals like galvanized steel, copper, zinc, stainless steel, bronze, and more. These materials have high strength and durable properties, making the final domes possess an attractive appearance.

The sheet metals selections are also easily repairable when misfortune occurs. We also make sure our sheet metal domes offer excellent accents and features to blend well with your industrial applications.

Machining Capabilities

KDM fabricate different specialized dome and components in different dimensions and figures. We invested in the latest processing and machine technology –this is to ensure precision and quality. We also have cutting machines, bending, laser cutting, milling, and complete drilling tools.

We continue to improve our production capabilities and provide the newest innovations to guarantee better quality custom domes.

KDM is more than glad to help you with your sheet metal dome requirements. We can also determine which fabrication method would fit best for your application needs.

Machining Capabilities

About KDM Capabilities

(1) About KDM Capabilities
(2) About KDM Capabilities

KDM, along with our fully attentive craftsmen has tirelessly worked to provide outstanding quality domes. We serve many different industries including lighting, electrical, industrial, commercials, architecture, and more.

Our team is capable to provide full sheet metal fabrication services. During product development, we give careful attention to details. We can provide customization services according to your required sizes, shapes, and details.

You are in good care with KDM. We are working with our skilled project managers, engineers, and designers to obtain an accurate final outcome. In fact, we are experienced in performing different fabrication techniques like welding, surface treatment, cutting, and more.

Let us assist your projects requiring our sheet metal dome fabrication.

KDM: Sheet Metal Dome Supplier in China

Equipment Used
Equipment/Tools Used in the Process

We used 3 major types of equipment in processing sheet metal domes. We work with:

  • Sheet metal bending equipment –We bend sheet metals with high accuracy. One of included equipment for bending is benchtop budget brakes.
  • Sheet metal forming equipment –Forming the sheet metal process requires force. This is to successfully deform the material by stressing the metal behind its elastic limit. One of the most required tools in the process is shrinker expanders.
  • Sheet metal shearing tools –It is a process where metals are cut in a straight line –particularly making angled cuts. The tools used are throatless hand shears and throatless rotary shears.
Applications and Industries

Custom sheet metal domes are highly required in many applications and industries. Every type is designed for a different application, whether in the lighting industry, architectural industry, or roofing applications.

  • Lighting industry: They are known as pleural dome lights when used in the lighting industry. It is often installed on the ceiling of a building, room, vehicle, or room. Provided with safety features.
  • Architectural industry: Dome has hemispherical forms and is used as ceiling fixtures and decorations for architectural buildings. It is found usually in small buildings and further architectural structures.
  • Roofing: Domed roof is a roof with dome-shaped designs. They are identified with onion and cone-like figures.

OEM/ODM Sheet Metal Dome Fabrication

Metal Domed Cover
Metal Domed Cover

The metal domed cover is widely used in vehicles, dryers, washers, kitchen equipment, bicycle, and engineering machinery. The domed cover is made from stainless steel, aluminum, copper, brass, and many more.

Dome Lamp Shade Parts
Dome Lamp Shade Parts

The dome lamp shade parts are available in many finishes such as porcelain enamel. It is also coated with many colors like red, green, blue, or customize.

Aluminum Domed Knurled Knob
Aluminum Domed Knurled Knob

The aluminum domed knurled knob ensures a unique finish and comfortable design. A variety of materials, sizes, and designs are available for your custom requirements.

Stainless Steel Metal Dome
Stainless Steel Metal Dome

Stainless steel metal dome is an elastic component used in the electronic and mechanical industries. It is designed to control mechanical movements such as the control and valve shrapnel. These kinds of the dome can absorb vibration and gives impact energy.

Copper Dome Roof
Copper Dome Roof

The copper dome roof is extremely light. It is widely used in most residential and commercial structures. The domed roof made from copper is known for its durability, beautiful appearance, and form complex shapes ability.

sheet metal dome fabrication
KDM - Sheet Metal Dome Supplier in China

Leading Provider of Custom and Standard Sheet Metal Dome. Over 15 Years of Manufacturing Experience.

  • KDM is a great company, with quality workmanship, responsiveness, professionalism, and provide quick quoting.

  • KDM provide us a quote for sheet metal dome fabrication very quickly. We’re glad to have this kind of service near our area.

  • KDM provides reliable and high-quality dome fabrication. They are always ready to collaborate on our design to provide excellent sales and engineering support.

Sheet Metal Dome Fabrication: The Ultimate FAQ Guide

This guide will take you through the fundamental aspects you should know about sheet metal dome fabrication.

Right from choosing the right material, forming processes, welding to quality assessment – you will find all information you are looking for right here.

Keep reading.

What Is Sheet Metal Dome?

It refers to a rounded vault made from a sheet metal material with a circular base forming the roof of a building or structure.

Ordinarily, this component entails a framework of tubular structures often covered by sheet metal material.

It is relatively rigid; thus, you can use it to cover different elements in a wide range of applications across various sectors.

Besides, it is quite versatile, lightweight, sturdy and available in different sizes for various outdoor applications.

A Sheet Metal Dome

A Sheet Metal Dome

Why Is Sheet Metal Dome Fabrication Important?

Sheet metal domes offer a broad range of advantages in the specific applications where they are used.

Of course, this is important since it guarantees efficiency, reliability and returns on investment accordingly.

Some notable benefits that make investing in sheet metal dome valuable consideration include the following;

  • Offers Flexibility

Sheet metal domes guarantee flexibility in a certain and mainly in dimension, force and shape.

Sheet Metal Dome Fabrication

Ideally, you can always change all these specifications based on the product requirements or demands.

  • Stability

You be sure of attaining stable return force and excellent performance in your application when you use appropriate sheet metal dome.

Of course, this is vital since it enhances reliability in the application.

  • Longevity

Most metal sheet domes are made from materials that exhibit exceptional durability and resistance to various harsh environmental conditions.

Thus, it is difficult to get a damaged sheet metal dome as long as it is excellently fabricated to suit the project demands.

In essence, a typical sheet metal dome is durable, and this is fundamental since it gives your investment value for money.

  • Noticeable Parameters

Sheet metal dome has all the notable parameters such as life, force, mechanical pressure resistance etc.

Usually, the parameters are designed based on client’s requirements and project demands.

Since different applications require sheet metal domes with varied parameters, this component guarantees best results based on the specifications.

  • Easy To Maintain

Often, sheet metal domes are used in different applications both indoors and outdoors.

Given you can coat the surface material of this component, it becomes easy to maintain it irrespective of the conditions it is exposed to.

Sheet Metal Domes Are Made From Materials That Are Durable And Easy To Maintain

Sheet Metal Domes Are Made From Materials That Are Durable And Easy To Maintain

What Are Critical Steps In Sheet Metal Dome Fabrication Process?

Fabrication process of sheet metal dome is significant since it determines its overall efficiency, performance and durability.

It is important to always get it right by ensuring you understand all the principle elements required in attaining this process.

The processing method is a multi-step process and requires numerous skilled professionals and equipment for desired results.

Nevertheless, here are the important steps to follow for desired results in sheet metal dome fabrication;

Step 1: Choose A Design For Sheet Metal Dome Fabrication

The process of sheet metal dome fabrication starts with conceptualizing an idea of how you want the product to look like.

Notably, sheet metal domes come in different designs or styles.

Thus, choosing the most appropriate one depending on your preference and project needs is fundamental.

The designs would vary, but the popular ones include;

  • Circle shape
  • Triangle shape
  • Four leg shape
  • Oblong shape
  • Custom shape

One Of The Designs You Can Choose For Your Sheet Metal Dome

One Of The Designs You can Choose For Your Sheet Metal Dome

Once you choose the right design, the designers will come up with its appropriate prototype for precision during production process.

Step 2: Determine Parts And Dimensions Of Sheet Metal Dome Fabrication

Determining the actual size of the final sheet metal dome component is the next step in the process.

Ordinarily, before the drawings can begin, you need to determine its specifications of the component needed for making the initial drawings.

Hence, you need to determine all the parts and their respective dimensions and other important manufacturing information.

Figure out the number of segments, cap diameter, actual diameter, rim, height etc., depending on your project demands.

Step 3: Design Sheet Metal Dome

This is often based on the specific design chosen during the first step in this process.

It involves incorporating basic concepts of what you want to attain in conjunction with the designer.

Ordinarily, at this phase, you may choose to put the ideas down roughly to enable you to attain a basic idea of the project’s requirements.

This phase may also involve designing a 3D model of the desired sheet metal dome.

The drawings and any other calculations are analyzed appropriately to ensure they conform to the requirements and specifications.

After completing manufacturability analysis, the design goes to the final in-depth drawing to calculate stress levels and load limitations.

Thus, the information retrieved from the process determines the specific fabrication process the sheet metal dome will be subjected to.

Step 4: Choose Best Material For Sheet Metal Dome Fabrication

Essentially, you can use a wide range of materials to make a sheet metal dome.

Of course, different materials exhibit various features; thus, the ideal one is dependent on your preference and application demands.

Material choice for sheet metal dome is vital since it impacts the design, economical and operational elements of the ultimate product.

The common metals used in making this component include the following;

It is one of the preferred materials used in fabricating sheet metal domes.

Steel has several relatively popular variations for high tensile strength and malleability, and corrosion resistance.

Besides, this material exhibits incredible toughness, fatigue strength, elongation and durability.

Hence, it comes in handy in making high quality and strong sheet metal domes.

It is a naturally lightweight material usually suitable for structural domes used in relatively low-temperature settings.

Aluminum is non-corrosive, non-magnetic, easy to machine and cast, and also durable.

Moreover, this material is quite stronger, more or less similar to steel.

This sheet metal dome material is easy to form, exceptionally durable and exhibits excellent corrosion resistance.

It has high tensile strength, outstanding temperature resistance, is environmentally friendly and appealing to the eye.

Hence, it is mostly preferred in applications where appearance and aesthetics of the project are of significant concern.

A stainless Steel Dome

Stainless Steel Dome

Generally, copper is ductile, malleable and has superior heat and electrical conductivity.

Its malleability and ductility make it easy to fabricate, thus among the leading materials for making metal domes.

This metal is quite popular for its hardness, brittleness and high malleability.

It exhibits excellent corrosion resistance and anti-bacterial properties, thus ideal for making domes used in food processing and handling settings.

Step 5: Cut Material For Sheet Metal Dome Fabrication

Once the ideal material for making the dome is selected, the next step is cutting it accordingly.

You can cut the particular material using different techniques depending on various prevailing factors.

Also, you can use a manual or power tool to cut the material for making a sheet metal dome.

Besides, computer numerical controls (CNC) cutters such as lasers to saw, chisel or shear can come in handy depending on the material and preference.

A Laser Cut Metal Dome

A Laser Cut  Metal Dome

Technically, cutting material for sheet metal dome fabrication is viewed as a subtractive manufacturing process.

In essence, functional parts creation takes place by removing some metal sections.

However, there are two categories you can use to cut material for sheet metal dome and include the following;

Cutting With Shear

This method entails different processes that can be distinguished as basic cutting, shearing and blanking.

Cuts from these processes are primarily essential for non-industrial metal domes since they have relatively lower precision.

Cutting with shear uses a blade to cut through metal, splitting it into smaller pieces.

Besides, this method uses upper and lower blades to cut the metal in a straight line, similar to scissors.

Advantages of cutting material for sheet metal dome with a shear include clean cuts, smooth edges and ability to obtain various gauges.

Cutting Without Shear

This is the second category of cutting used in sheet metal dome fabrication.

Ideally, it is more accurate and useful in creating precision metal domes.

Some common cutting processes under this category include plasma cutting, laser beam cutting, machining and waterjet cutting.

Plasma Cutting

It uses heated compressed nitrogen and hydrogen gases ejecting from a nozzle at high speeds.

Electrical canal of ionized gas creates a hot plasma jet that can penetrate thicker metal gauges.

This cutting method is powerful, fast and relatively economical, especially in an industrial fabrication setting.

A Plasma Cutting Machine

Plasma Cutting Machine

Laser Beam Cutting

It uses a focused beam of light strengthened by a mirror or lens to cut through and engrave specific sheet metal.

Laser beam cutting exhibits excellent precision but is most suitable for cutting thin and medium sheet metal gauges.


This method cuts off pieces of material using tools like drill bits or lathe blades.

Waterjet Cutting

It is a cutting technique that uses a high-pressure jet of water shot at ultra-high speeds to cut through the sheet metal.

Ideally, water is mixed with an abrasive compound that facilitates material eroding during cutting.

It is a suitable method for cutting sheet metals with relatively lower melting points.

A Water Jet Cutter

A Water Jet Cutter

Step 6: Sheet Metal Forming For Dome Fabrication

In contrast to cutting, which ordinarily subtracts material from the particular sheet metal, forming reconfigures and reshapes it to desired geometry.

Forming sheet metal for dome fabrication entails bending, stretching, roll forming, stamping and spinning.


This forming process uses machines like press brakes to bend sheet metal material in different shapes such as U-shape, V-shape and channels.

Ideally, the angles often vary, but comparatively, thick metal gauges tend to be quite involving when bending.


It uses a stretcher, hammer or English wheel to pull the sheet metal apart.

Ordinarily, the material is stretched and bent over a die simultaneously.

As such, it makes it easy to attain large contours on the sheet metal.

A Hammer Used In Metal Stretching

A Hammer Used In Metal Stretching

Technically, this process uses a stretch press with sheet metal wrapped up along edges by gripping jaws attached to carriage pulled by hydraulic force.

It then applies a force that stretches the sheet metal.


It is a sheet metal forming process that uses a hydraulic or mechanical stamping press with a tool and die.

This process is more or less similar to punching, only that in stamping, the material is not necessarily removed from sheet metal.


This process uses a lathe machine to rotate the sheet metal as it presses it against a tool.

It is a relatively unique metal forming process more akin to CNC turning.

Spinning Of Metal

Spinning Of Metal

Step 7: Assembling Process In Sheet Metal Dome Fabrication

Assembling is not necessarily a sheet metal dome fabrication technique, but it is pretty significant in the general manufacturing process.

Of course, there are several assembling methods you can use when making a sheet metal dome.

You can use processes such as punching to make holes for pins, rivets and fasteners in overall sheet metal fabrication.

However, the most fundamental in assembly of sheet metal dome include the following;


This technique uses heat to melt a sheet metal section where it will fuse with another part by adding filler material.

You can weld the sheet metal dome using different methods such as MIG, TIG, arc etc., which all offer various weldability properties.

Typically, welding this component involves using high heat to melt the metal base while adding filler material.

The high-temperature heat forms a pool of molten weld that cools to form a joint, which can be stronger than primary material.

In some incidences, pressure is used to form the weld, and this is accomplished by the pressure itself or with a combination of heat.

Besides, shielding gas can also come in handy to protect melted and filler metals from oxidation or contamination.

Welding process

Welding Process


It is a process that uses small metal parts embedding through sheet metals to join them.

You can either drill in, punch or place them into the hole.

Rivet tails are then deformed to hold it in the correct position by smashing or pounding to flatten them and expand their size.

This technique forms butt or lap joints using different rivet configurations, including zigzag, single or double.

The common types of riveting you can use when forming sheet metal dome include the following;

  • Structural steel rivet
  • Self-piercing rivet
  • Friction-lock rivet
  • Blind rivet
  • Driver rivet
  • Flush rivet
  • Oscar rivet

Essentially, riveting creates watertight joints since the rivets go through the sheet metal without piercing the bottom material.

Parts Of A Rivet

Parts Of A rivet


It is relatively similar to welding, only that it melts the filler material without melting the sheet metal.

Hence, the molten filler metal, which is typically a brazed alloy, solidifies at the joint.

Often, the melting point of filler metal is 450° C and should always be below the specific sheet metal dome material you are joining.

In welding, high temperature melts the base material hence the difference from brazing.

Flux protects filler metal in brazing and joint forms when molten filler metal solidifies as it cools, making joint between similar or different metals.

However, an ideal brazed joint forms when both the filler and base metal have metallurgical compatibility.

While at it, there should be a gap in joint design where molten filler can easily be drawn by capillary action.

You can use brazing technique to assemble a sheet metal dome made of different materials due to its integrity and versatility of joints.

Brazing Of Sheet Metal

Brazing Of Sheet Metal


It comes in handy when holding metal sheets independently in conjunction with other methods.

But in many instances, structural adhesives are used independently in assembling sheet metal domes.

Hence, you won’t necessarily need to use welding or mechanical fasteners to increase the structural integrity of joints.

The advantage of using adhesives over other sheet metal dome assembly methods is it spreads stress across the entire bond joint.

As such, it prevents corrosion and increases fatigue resistance.

Besides, flexible adhesives can absorb stress caused by flexing, vibration and impact, minimizing fatigue further.

Step 8: Apply Surface Finishing After Sheet Metal Dome Fabrication

The essence of coating a sheet metal dome with a surface finishing substance enables it to form a protective layer on the metal.

Such coatings are also vital in enabling the paint to adhere to the surface material of the sheet metal dome.

Remarkably, you can use different types of coatings for surface treatment based on a specific type of metal you are using.

The common surface finishing methods you can apply on sheet metal domes after fabrication process include the following;

Powder Coating

It is a surface finishing method that integrates a sturdy plastic powder on surface material of a sheet metal dome.

This option is suitable particularly for sheet metal domes used in outdoor applications because it demonstrates exceptional resistance to corrosion.

Powder Coated Metal Dome

Powder Coated Metal Dome


It entails use of electricity and chemical compounds to form a metallic film on the surface of sheet metal dome.

The benefit of electroplating is that it guarantees immense resistance to corrosion, which ultimately extends the lifespan of this component.


This surface coating technique involves use of electrolytic passivation, which naturally increases an oxide layer on metal surface of dome.

Vibratory Finishing

It is a mechanical surface coating process that removes defects from the sheet metal dome.

Ideally, this technique is fast hence suitable in large-scale industrial manufacturing of sheet metal domes.

Sand Blasting

This surface finishing method is suitable for sheet metal domes that require a matte finish.

It is ideal for domes made from relatively soft sheet metals that are quite easy to form.


Essentially, this is a surface coating method that involves applying protective zinc, iron or steel coating on a sheet metal dome.

The intention is primarily to prevent the component from rusting and increasing its longevity.

Different Parts Of A Galvanized Sheet Metal

Different Parts Of Galvanized Metal Sheet

Vapor Deposition

It is the deposition of sheet metal dome into a chemical substrate by using gaseous phase of depositing material.

Step 9: Check Quality Of Fabricated Sheet Metal Dome

Primarily, fabricated sheet metal domes are used in a wide variety of applications.

Therefore, the quality and safety of the final product are fundamental concerns.

During manufacturing process, this component is often subjected to various tests to examine different quality aspects.

The essence is to ensure it meets the minimum requirements to guarantee safety, reliability and performance.

Cupping test is one of the quality tests this component is usually subjected to.

It examines the quality and durability of the dome by using force to determine the result.

Hence, it gives an idea regarding how resistant the sheet metal dome is to environmental conditions and other situations.

Standard tensile test is also quite common in determining the suitability of the sheet metal dome in different applications.

It tests various aspects, including bending level, hole expansion and wrinkle tests among others.

However, it is important to know that in sheet metal quality testing, strain rate sensitivity is quintessential.

Therefore, you need to ensure that you compare constant and valid strain rates for similar tests.

How Much Does Sheet Metal Dome Cost?

A wide range of factors determines the definite cost of a particular sheet metal dome.

For instance, the type of material used in making this component is an integral cost-determinant.

Different sheet metal dome materials cost different and this, of course, influences the price of the final product.

Also, the actual design of the sheet metal dome determines the overall cost.

Some units with complex designs tend to be costlier than ones with relatively simple assembly.

The particular manufacturer you purchase the sheet metal dome from is another determinant of the cost.

Different companies sell this product at varied rates depending on numerous factors surrounding the production process.

Hence, you need to inquire diligently from your preferred manufacturer to know the exact cost of this product.

And significantly, the size of the sheet metal dome you are buying also determines its cost.

Bigger sizes are, of course, more expensive than relatively smaller units.

Simply put, there is no definite cost of buying sheet metal dome. Instead, it depends on different factors, such as the few ones mentioned above.

But you can always get an instant quote from the manufacturer once you provide details of your preferred sheet metal dome design.

The Smaller The Size The Cheaper The Dome

The Smaller The Size The Cheaper The Sheet Metal Dome

How Long Does Sheet Metal Dome Fabrication Process Take?

It varies based on several elements.

Different manufacturers provide varied timelines given based on the nature of the product and other existing engagements.

In some instances, the actual design construction of this component would determine the overall production durability.

Complex designs may take longer than simple ones since the former requires more input than the latter.

However, the general lead time in many cases ranges between 7-14 days.

But it is advisable to get assurance from the manufacturer regarding the precise turnaround time.

For all your custom domes contact us now.

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