sheet metal Louvers
Custom Sheet Metal Louver Manufacturer in China
We are the leading manufacturer of sheet metal parts that suits your specific requirements. KDM also have fabrication expertise to help in your projects including, fixing, adjusting, etc.

Professional Sheet Metal Louver Supplier in China

KDM manufactured sheet metal louver that is typically formed using a bottom die and press incorporating top. We customized the sheet metal louver through different processes including punch press, designing of louver, spacing, and clearance. Our team is experts to achieve the design geometry for desired sheet metal louver.

Our sheet metal lover allows the venting of air through the workpiece. It offers protection and can be used as an assembly guide. KDM louver requires custom tooling for fabrication with smooth and acceptable features.

If you want a customized sheet metal louver, don’t hesitate to contact us.

KDM Sheet Metal Louver Benefits

KDM provides sheet metal louvers that are designed to regulate airflow and light penetration. Among our wide selection are sheet metal louver, spelled louver, horizontal blades, slat, and other materials.

KDM has a wide variety of industrial and commercial applications of sheet metal louver. We make sure that our design of sheet metal louver has a lot of benefits such as providing an opening in the enclosure, protection against entry of dirt, improving airflow in a closet to prevent musty odors, releasing heat generated in the microwave when you cook, allowing to filter into a room, shade from the sun and many more.

KDM Sheet Metal Louver Benefits
Why Choose KDM Sheet Metal Louver

Why Choose KDM Sheet Metal Louver

KDM has pre-engineered modules for quicker designing and for customization of sheet metal louver. We build, fabricate, integrate and install louvers for any wall system specification, composite wall panel system, commercial application, and many more.

We integrate function, system durability, and aesthetics through our precision shop drawings, experienced field installation, and in-house customized fabrication. KDM can supply various perforated louvers either stainless steel, aluminum, or mild steel, with different dimensions depending on your application and architectural needs. Message us now!

KDM Featured Sheet Metal Louver

We are experts in making sheet metal louvers depending on your design. KDM manufactured different types of louver and material using CAD, 3D, and PDF drawings. These are suitable for which any application like electronic enclosure, industry usage, commercial usage, and many more.

Outdoor Frame Fixed Louver
We manufactured outdoor frame fixed louver with customized color, design, size and so on. It is commonly used for heat insulation, insect-proof, soundproof, dustproof, decorations and many more. It is designed with horizontal opening.
Aluminum Sheet Metal Louver Fencing
The housing shell shutter louver are made with different color such coffee color, white, light gray, and any color for powder coating. It is good for total solution of your project such as apartments, hotels, housing, and some industry like automotive etc.
Exterior Doors Black Frame Louver
KDM exterior doors black frame louver has a surface treatment of foil decoration, anodized, brushed, PE coated, mirror, PVDF coated, printing, and wooden/timber. It has a lot of function including antibacterial, fireproof, anti-static, mold proof and many more.
Bridge Louver Extruded Holes
We produced bridge louver extruded holes with full range of metal to meet specification of customer. KDM used the most advanced technology equipment and technique to produce powder-coated bridge louver extruded holes.
Metal Exhaust Fresh Air Louver
We manufactured exhaust fresh air louver that has a wider size than ordinary blade features. It has a square and rectangular shape. These are commonly used for any application including hotels, rooms, office and so on.
Sun Shading Louver
Our sun shading louver are used to cooling tower, for shopping malls, power house, office building, factory workshop, Villa and many more. We offer online technical support, online installation, on-site training and so on.
Outdoor Waterproof Wall Side Louver
KDM offers outdoor waterproof wall side louver which is used for air conditioning. It has a wall diffuser feature for ventilation function. We produce sheet metal louvers for any industry like aerospace, communication, power plant and many more.
Ceiling Panel Louver
Our ceiling panel louver features weather resistant, easy maintenance, high strength, excellent process ability, thermal resistant, goof fire prevention performance, shock resistance, impact resistant and so on. It is a decorative panel for interior design and outdoor decorations.
Aluminum Louver Door Punch Parts
We provides aluminum louver door punch parts using laser cutting, bending, punching, welding, CNC bending, riveting, silk screen, stamping, and powder coating process. It is made from zinc plating, powder coating and anodized surface treatment.

KDM Production Facility

Send Inquiry

Why Choose KDM Sheet Metal Louver

KDM Skyrocket Your Business with Our Sheet Metal Louver

KDM is professional in terms of the fabrication of all metal products like sheet metal louver. Our sheet metal louvers are used in various applications for industries including aerospace, automotive, electronic, communication, instrumentation, medical devices, robotics, miscellaneous metal, and many more. Our louvers system facilitates air exhaust and intake to ensure the good quality of air for inhabitants.

KDM is here for you to give you the different details and types of louvers including mild steel sheet louver, perforated louvers, aluminum louvers, MS louver plates, and so on. For your convenience, we have a lot of standard louvers tools and dimensions that vary with materials thickness and type.

If you need sheet metal lovers to regulate flow and keep sunshine moisture out, KDM will make it for you. Don’t hesitate to contact us now!

KDM sheet metal lovers are strong enough to withstand greater pressure and heat than those other. It is corrosion resistant and water resistant. It is simple to wash the surface, no cavities to dirt pockets, and etc.
The sheet metal louvers are durable for your application in gutters, downspouts, windows, vents and to provide proper airflow. It delivers the maximum strength and durability for any applications.
Stable Shape
Stable Shape
Our sheet metal louver has a stable shape depends on your desired design. We build these louvers for medical tables, roof for building, airplane fuselages, and other applications.
The sheet metal louver are cost-efficient depending on your design, tools and dimensions. With our fabrication services, you can save a thousand dollars in tooling. It has a design to meet high requirement of our customer.

Sheet Metal Louvers: The Ultimate Guide

I know you are probably looking for high quality and unique sheet metal louvers.

Or, you would like to learn about features, design and fabrication techniques for sheet metal louvers.

Whichever the case, this guide offers perfect solution for you – keep reading.

What Are Sheet Metal Louvers?

A louvre is a feature that is typically formed in metal sheet designs using a top-bottom die and punch press.

When creating a louvre, the sheet metal is driven up to the die and slit over the louvre.

sheet metal louver

sheet metal louver

An elevated window is often created in the shielded area on three sides and an open fourth.

How To Make Sheet Metal Louvers

Louvre sheet metal can be made through the following:

Punch Press

The two main components are the punch.

They are commonly coupled to the revolving machine ram, and the die, which is clamped onto an anvil whose flat surface is parallel to the ram’s path.

punch press

The punch will push on the metal sheet louvre piece that is always held in the die while in operation.

Making metal sheet louvres with a punch press is usually a simple process.

However, it does necessitate expensive and huge tooling. When constructing a project that requires a lot of louvre sheet metal, the punch press is usually the best solution.

It has some benefits like;

  • It is a faster method for many projects
  • The punch press method is cost-effective and also energy efficient.
  • It can it has an option of performing secondary operations when needed.

Press Brake

There are usually two methods in this procedure. Die and punch press tool adaption is one of them. The tooling is then flipped over, with the die on the bottom and the punch on top, before being carried to a press brake.

When tooling is flipped, the flat bottom of the die usually has an easier time positioning and holding the workpiece as the punch descends.

The press brake is usually slower than the punch press when compared.

The second way is to make sheet metal louvres, which do not require specific tooling.

They could be perfect for low-volume sheet metal louvre production when specialist tooling is unavailable.

The component is usually cut off on four or three sides of the metal sheet louvre, and the sheet is bent using standard tools.

Although this method does not usually benefit from closed sides, it does provide an easy and quick alternative.

With advantages like

  • Being cost-effective
  • Reduces wastage of raw material
  • It is flexible
Sheet Metal Louvers Design

Some of the designs available for sheet metal louvre designs are:

Stationary   Metal Sheet Louvre

This design with airfoil-style blades that provide superb weather protection and sound attenuation.

It is commonly known to provide low airflow resistance and ample free space and be a cost-effective solution.

stationary metal sheet louver

stationary metal sheet louver

 It is built with air performance as the prime focus.

Adjustable Sheet Metal Louvres

It is among the most common versions available, with a 4″ depth roll-formed blade and twin plated link bracket pivot.

Usually, the blades are reverted, and they’re also connected with a quarter-plated zinc rod.

And they are mostly assembled with a set screw and brass pivot.

adjustable sheet metal louver

adjustable sheet metal louvers

All adjustable sheet metal designs come with either a chain operator mechanism or a hand crank as a standard.

Combination Metal Sheet Louvre

They generally operate as a damper pair, with fixed blade louvres in the front and adjustable blades louvres in the back that can close and open.

They are most regularly used in warehouses and other structures where the airflow must be restricted without the use of a damper.

combination sheet metal louvers

combination sheet metal louvers

 Depending on the specified performance structure, the combined louvre sheet metal design can be included in no-drainable and drainable blades.

Air Measuring Louvres Sheet Metal Design

The air measuring louvre design combines an air measurement station and an outside air louvre into a single piece of equipment.

It is rain resistant and allows maximum ventilation with minimal pressure drop and water penetration.

Most commonly used in plenum and air handler applications.

Acoustical Sheet Metal Louvre Design

Louvre blades with absorbent sound material are commonly used in this design to reduce infiltrations.

Steel and aluminium are commonly used, with blade types such as airfoil and box blade. Condominiums, public buildings, and office buildings all use it.

Acoustical sheet metal louver

Acoustic sheet metal louver

Fixed Louvre Sheet Metal Design

This is a louvre sheet metal blade with no manual or electrical operation.

Unlike the adjustable design, the fixed slats are always at the same set angle, usually 60 to 45 degrees.

fixed sheet metal louver

fixed sheet metal louver

 It is primarily intended for pre-engineered metal wall building panels to let fresh air circulate indoors while keeping snow insects and moisture out.

Sheet metal with fixed louvres is typically weather-resistant and sturdy.

Advantages Of Sheet Metal Louvers

Well, sheet louvres metal does come with a lot of advantages which are:

Easy To Install

Louvres sheet metals usually are fundamental and easy to install; anyone can do it as long as they read the instructions on how to do it.

It saves you time and energy from getting a technician to do it. However, if you require assistance, it will only take a few minutes before they are completed.

Low Maintenance Requirement

Another advantage of louvres sheet metal is that most of the materials used to produce them are corrosion resistan.

Therefore, they will not rust even when exposed to extreme weather.

It allows them to endure longer without deteriorating and save money in the long term by eliminating the need to replace them after a set length of time.

It Improves Insulation

Metal sheet louvres are primarily intended to provide better insulation for any building interior while reducing energy consumption.

Their slats may be opened to allow for natural ventilation while preventing undesired exterior elements from entering the area.

Buildings with metal sheet louvres can survive any weather condition for an extended time.


Steel, aluminium, mild steel, and other regularly used materials have a high strength impact.

When paired with a proactive surface treatment such as powder coating, this is a tremendous advantage in making the sheet metal louvre durable.

The louvres can endure several decades in ideal conditions, making them cost-effective for the building owner.



Generally, sheet metal louvres limit the need for high-energy-consumption ventilation equipment such as air conditioners and heaters.

They are made of environmentally friendly materials that have a low environmental impact.

If you no longer want to utilize the materials, they can easily be recycled and reused as scarps for various purposes without losing their quality.

Uses Of Sheet Metal Louvers

Some of the primary uses of sheet louvres metal are:

  • Making air conditioner unit
  • Ventilation
  • Sun shading
  • Decorations
  • Display units
  • Radiator covering
  • Balustrade fill
  • Acoustics
  • Walls
  • Diffusers
  • Architectural mesh
Choosing Material For Custom Sheet Metal Louvers

Some of the primary materials include:

Stainless Steel Sheet Metal Louvers

This is a solid and lasting material for custom metal sheet louvres.

It is renowned for surviving for decades without deterioration and is of superior quality to other metals.

It is usually separated into multiple categories, the most frequent being grade 304 and grade 316 and made of an iron-carbon alloy.

Also can withstand extremely high temperatures.

It is simple to keep and clean, making it the most excellent alternative, but it is also the most expensive.


  • It is extremely durable
  • Low maintenance costs
  • Corrosion resistance,
  • Pleasing look.
  • Stainless steel is also environmentally friendly.

You can learn more about: Stainless Steel Sheet Metal Fabrication.

Mild Steel Sheet Metal Louvre

It is also a low-carbon steel material appropriate for customized louvre metal sheets. It usually contains a 2.1 per cent carbon and iron alloy.

It is well-known for its strength and quality, and businesses frequently employ it due to its lower cost than stainless steel.


  • The tensile strength is quite muscular.
  • It has a strong high impact.
  • Excellent ductility
  • It is a magnetic material due to its ferrite concentration.
  • Good adaptability.

Copper Sheet Metal Louvre

Customized sheet metal louvres should also be a brass bronze copper-nickel alloy.

Copper Sheet Metal Louvre

This substance allows the louvre to be designed into various shapes. Although it is costly, the material quality is usually exceptional.


  • The copper Heat conductivity is excellent.
  • It does have Electrical conductivity, which is excellent.
  • Copper is also known to be a good Corrosion resistance
  • The machinability of copper is usually excellent.
  • Another property is that copper is Non-magnetic.

You can also learn more about: Copper Sheet Metal Fabrication.

Galvanized Steel Sheet Metal Louvres

Galvanized Steel Sheet Metal Louvres

It usually entails adding a proactive zinc coating on iron or steel to keep the metal sheet louvre from rusting.

Hot dipping galvanizing is the most common method.

It is another excellent material. However, it is rarely used in louvre designs. In comparison to other materials, it has an excellent surface polish.


  • It is a robust,
  • Durable material
  • Great surface quality
  • You can recycle it
  • Galvanized steel is also corrosion-resistant.

You can also learn more about: galvanized sheet metal fabrication.

Aluminium Sheet Metal Fabrication

Magnesium, zinc, silicon, manganese, copper, lithium, and a more significant percentage of aluminium alloy.

They are commonly found in aluminium sheet metal louvre material.

It is also on the list of excellent materials because of its lightweight and affordable prices.


  • Aluminium is generally lightweight
  • It has an excellent thermal conductivity
  • Another property of aluminium is that it is a robust light reflector
  • Aluminium can be recycled
  • Aluminium is corrosion resistant
  • It is also environmentally friendly

You can also learn more about: Aluminum Fabrication.

Sheet Metal Louver Surface Finish

Surface texture refers to altering the surface of a louvre metal sheet by removing, adding, or rearranging the design.

Below are some of the surface finish options available for louvre metal sheets;


It employs an electrochemical passivation process to thicken the oxide layer on the sheet metal louvre surface.

Anodizing sheet metal improves corrosion resistance and wears resistance. In comparison to the rest, it usually has a rougher surface finish.

The corrosion and abrasion resistance of anodizing is excellent, and adhesion failure, fading, and chalking are not a worry when dealing with this alternative.

Anodization produces permanent, faultless louvre sheet metal coatings in most cases.

The finished product is usually UV resistant and comes in various sheet metal louvre surface treatments.

Powder Coating

It’s usually a clear metal sheet louvre finish that involves spraying powdered paint directly onto the material surface.

Powder Coating

Powder coating creates a robust layer that is both wear resistance and corrosion-resistant, making it a better type of surface treatment for louvre sheet metal.

It is usually available in various colours to fit the client’s needs. The colour selection determines powder coating costs.

Powder coating offers wear and corrosion resistance, does not fade, is long-lasting, and makes the louvre sheet metal final product less combustible.


It’s also a popular choice for louvre metal sheet surface treatment. It entails placing a fine layer of a different metal on the surface of the metal sheet louvres.

Commonly, this process occurs when sheet metal is used as the cathode, and sacrificial metal is used as the anode.

Both are immersed in an electrolyte comparable to an anodic substance.

The benefits of this surface finish technology include constantly enhanced conductivity, reduced electroplating friction, and suitability for a wide range of materials for louvre metal sheets.


Surface polishing is usually accomplished by the use of chemicals or manual rubbing.

The advantages are excellent specular surface reflection, superior corrosion resistance, and low cost.


It is usually a precise procedure used when the sheet metal louvre surface demands a greater level of refinement in terms of flatness and surface.


A light, abrasive, soft iron tool works softly on the sheet metal louvre surface.

This procedure necessitates the use of a specialized machine.

It has advantages such as extreme dimension accuracy, more accurate surface finishing distortion of the workpiece, and minor shape flaws repair.

Features Of Sheet Metal Louvers

Some of the main features of louvre metal sheets are:

The Design

The most well-known louvre benefit is allowing air to flow through the workpiece while protecting the outdoors.

Typically, the feature is appropriate and smooth for the machine’s exterior, ensuring nothing brushes against it.

The design is crucial because it will determine the louvre sheet metal required for the job and how it will appear once mounted on the structure.

Sheet Metal Louvers


Size is an essential characteristic of louvre metal sheets.

Knowing which size is required will assist in obtaining the appropriate bespoke tooling for the louvre manufacturing.

The two main components are the punch.

It is  commonly coupled to the reciprocating machine ram, and the die, which is clamped onto an anvil whose flat surface is parallel to the ram’s path.

The punch will push on the metal sheet louvre piece that is always held in the die while in operation. For example, if it’s a press punch, you’ll be limited by the size of the tool that can be used on the press and the amount of tool holding required.

Also, if you’re sending your sheet metal louvres outside for production, make sure you’re familiar with the industry’s sizing standards.

Because the louvre is a one-time deal, it must be designed around a specified design and conventional sizes.

Clearance and Space

When the sheet metal louvre is made, it usually entails some space around it to hold down the workpiece, which is done by the punch and die process.

Installing another louvre on top of it will crush and perhaps harm the sheet metal louvre’s workpiece.

The most important thing to remember is that you must understand the area and work envelope when designing your louvre sheet metal.

Carefully position the louvre away from the edge of the workpiece so that the punch and die may fully engage the metal sheet before it forms.

Also, make sure the louvre has a transparent edge so it doesn’t get in the way of the tools used to produce the flange.

For all your sheet metal louvers from China, contact KDMFAB now.

Send Your Inquiry Today
Scroll to Top