KDM - Sheet Metal Finishing Manufacturer in China

KDM has extensive know-how capability for sheet metal finishing, which is beneficial for your sheet metal fabrication.

KDM Sheet Metal Finishing

Sheet metal finishing is also referred to as the final working phase in sheet metal fabrication. It is a method that involves adding a layer of coating to a piece of sheet metal, making it ready for the finishing procedures. Sheet metal finishing is necessary for every fabrication, that’s provides optimal finishing outcomes to metal that result in supplementary strength and durability.

In addition, numerous sheet metal finishes are applicable to a wide variety of sheet metal materials, for particular purposes. Which is beneficial for reducing surface dullness and roughness, providing continuous protection, and enhancing the aesthetic appearance. 

Sheet Metal Finishing Industries’ Benefits and Characteristics

  • Higher mechanical-, electrical-, frictional-, and chemical-resistance.
  • Excellent corrosion- and abrasion resistance.
  • Improved electrical conductivity.
  • Enhanced decorative appearance, smoothness, glossiness, and hardness.
  • Perfect and irremovable.
  • Removes oxidation and surface imperfection.
  • End-products are non-toxic, eco-friendly, and less flammable.
  • It has no risk of fading, chalking, and adhesion failure.
  • Dimensional accuracy.
  • Good formability, weldability, and solderability.
  • Guaranteed more prolonged surface and visual quality.
Sheet Metal Finishing Industries’ Benefits and Characteristics
Selecting the Right Sheet Metal Finishing

Selecting the Right Sheet Metal Finishing

The following are brief guides and considerations that help reduce the choices in selecting a particular finishing method.

  • Material Types
  • Metal Hardness
  • Coating Thickness
  • Uses
  • Production Speed
  • Cost-effectiveness

Trust KDM for Your Quality-Assured Sheet Metal Finishing Needs

Years of R&D Experience. KDM has more than 10 years of experience in sheet metal finishing and engineering.

Reputable Expertise. KDM’s dedicated team of engineers leads the way towards the expanding development of sheet metal finishing across industries.

OEM and ODM Services. KDM actively offers a number of in-house services for all sheet metal finishing for all designated designs and projects.

Guaranteed High-Quality Products. Through utilizing our complete set of the latest technologies and undertaking strict procedures, KDM ensures to provide quality-mannered products that exceed the standard for almost every industry. 

Competitive Prices. KDM has the availability of most sheet metal fishing that is offered at the most competitive price.

Fast Turnaround Time and Prompt Responses. KDM provides up-to-date product status updates and new product releases. We also actively give customers full updates on the progress of all order placement to delivery. 

Trust KDM for Your Quality-Assured Sheet Metal Finishing Needs

Sheet Metal Finishing Option Series

Sheet Metal Finishing Option Series
Sheet Metal Finishing Option Series

KDM offers different sheet metal finishing options that can be added, particularly to any sheet metal design plan:

Sand Blasting/Bead Blasting

  • Cleanses and smoothens the surface
  • A safe method is compatible with most brass, steel, stainless steel, and aluminum sheet metals
  • Environmentally-friendly process

Powder Coating

  • Offers a wide range of colors for aesthetic purposes
  • Creates strong layer
  • Virtually applicable to any type of sheet metals


  • Only compatible with titanium and aluminum metals
  • It unifies with various colors for decorative applications
  • Utilizes electrochemical process that creates a corrosion-resistance layer finish


  • It covers the sheet metal surface with a thin layer of another metallic material
  • Improves certain properties such as strength, resistance, etc.
  • Most common finishing used for all sheet metals


  • A typical finishing method for removing surface imperfections that creates uniform surface textures
  • Recovers specific functionalities, specifically for damaged gears and mechanical parts

Polishing /Buffing

  • Used to reduce surface roughness
  • Increases metal’s luster

Hot Blackening

  • This process is done by putting a thin black oxide layer on the sheet metal to generate a matte finish

Heat Treating

  • Also refers to “annealing”
  • Enhances ductility
  • Reduces metal hardness
  • Improves machinability
What are the Industrial Applications for Sheet Metal Finishing?

Sheet metal finishing has an extensive series of applications in different industries:

  • Automotive and transport
  • Electrical
  • Aerospace
  • Hardware
  • Architectural
  • Heavy equipment
  • Enclosures and housing appliances
  • Telecommunications 
Sheet Metal Finishing what are the Most Know Materials?

There is an extensive variety of sheet metal that is used in the finishing process, which include:

Cold Rolled Steel Sheet Metal

Cold rolled steel sheet metal offers unique characteristics, such as easy formability, smooth, superior surface quality, and dimensional accuracy

It is best to use for most applications, like appliances, automobiles, furniture, and other related items. 

Stainless Steel Sheet Metal

In regard to cost-effectiveness, stainless steel is relatively pricey compared to regular steel. 

However, this is versatile and essential for most application where durability ad resistance is required. 

It creates a shinier and aesthetic appearance, especially when it is applied with the finishing treatment completely. Also, stainless steel is beneficial for its longevity and superior workability qualities. 

For material selection, stainless steel is available in the 430, 361, 321, 316, 304, and 302 game series, and each of them carries unique characteristics.

Aluminum Sheet Metal

Aluminum is a bit more costly than other types of sheet metals. 

However, it specializes in having impressive qualities that clear the way for finishing processes. 

This material is not easy to rust. That also has strong electrical conductive and thermal properties. 

Copper Sheet Metal

Most copper sheet has a higher level of electrical conductivity.

The outstanding properties of copper sheet metal, include excellent dimensional control, ductility, and high crack resistance, making this material capable of withstanding the heavy-duty finishing process.

What are the Preparation Stages for Sheet Metal Finishing?

The preparation stages or procedures for sheet metal finishing are the following:


Degreasing is a procedure that is required before proceeding with finishing procedures. 

Throughout the industrial process, most oils and lubricants leave every sheet metal with excess. 

The presence of these elements visibly affects the entire finishing process. In that case, removing it is imperative. 

To achieve successful degreasing, it is suggested to apply a special solvent such as a degreasing agent—used as a liquid solvent, wet degreasing, or in dry form. 


Cleaning sheet metal is the next step to work on after degreasing.

Any form or type of sheet metal finishing must first undergo cleaning. That is beneficial as it gives means good adhesion to any sheet metal. 

Cleaning sheet metal is done the easiest way. The only thing you need to use is a mild detergent, then rinse, and wipe it down with a clean rag.

However, it is advised not to expose or to apply the wrong chemical to any sheet metal to prevent possible damage. 


In this stage, rust and other impurities from the sheet metal surface are removed. It involves using an acidic solution, likely known as pickle liquor. 

That prepares the sheet metal surface for chemical and electrolytic reactions. 


Sheet metal is polished last when preparing sheet metal for the finishing processes. 

That involves taking off imperfections found in sheet metal and gives the ultimate perfect, defect-free, good-looking sheet metal appearance.

Related Products

  • Polished Stainless Steel Sheet
    Polished Stainless Steel Sheet
  • Hairline Stainless Steel
    Hairline Stainless Steel
  • Hot-Rolled Stainless Steel Sheet
    Hot-Rolled Stainless Steel Sheet
  • Stainless Steel Sheets
    Stainless Steel Sheets
  • Stainless Steel Checkered Plate
    Stainless Steel Checkered Plate

People Also Ask:

Which Finishes Can You Apply On Sheet Metals?


Platting is where you utilize chemical baths to assist in coating or changing exterior of a substrate within the metal layers. Electroplating is when there is a generation of electric current to help in coating metal sheet. It is an autocatalytic process where substrate catalyzes the reaction. Metal plating gives products durability, corrosion resistance, surface friction and outside appearance.


Utilize chemical baths to remove oil residue from machines. Brushing helps remove imperfections of exteriors and creates a uniform surface texture to improve appearance of metal sheet. Utilize wire brush to remove off slag produced by operation from the welding and grit from exterior of metal sheet before cleaning.


These are abrasive methods employed to assist in reducing exterior roughness in metals after machining. The abrasive powder is employed with a combination of leather or felt wheels to polish. Honing and lapping are when you utilize abrasive compounds to improve exterior roughness by rubbing against each other.


Grinding is a machine with abrasive wheels that smoothen surfaces and give levels of smoothness. Grinding helps to decrease the exterior roughness left by the machine.

Vibratory Finish

Vibratory finishing is when you employ a mechanic to deburr products and remove sharp edges and sprue.


Blasting is when abrasives are forced onto a substrate at speed to give clean texture to the metals sheet. Blasting helps to improve fatigue on metal sheets and stress cracking caused by corrosion is improved.

Heat Treating

Heat treatment gives good qualities to metal sheet after the finished shape. Flame treating helps elevate wear resistance and improve strength of the metal sheet.


Utilize water, powder and oil-based paints to help give protection to metals against corrosion.

How Do You Get Smooth Sheet Metal Finishing?

Buffing And Polishing

Buffing uses a loose abrasive applied to the work wheel to create a smooth surface.

Polishing is a more aggressive finishing that removes the exterior material that’s superficial from metal sheets to give a brighter polish look.

How Can You Achieve Frosted Finishing On Metals?

Through blasting

Abrasive blasting is a method of industrial finish that utilizes blast equipment to push range of media grit.

How Do You Choose Sheet Metal Finishing?

Consider The Types Material.

The type of material determines finishing process to use. Remember, different materials have different properties.

Thickness Of Coating

Different techniques have different coating thicknesses.

Intended Applications

Finishes are in use due to either aesthetic or functional reasons or both.

Production Time

Depending on how fast you want to finish a sheet metal, decide on type of machine that help produce quality finish at a short time.


Understand how to combine costs and quality to give out a unique finish.

Is Sheet Metal Surface Treatment Same As Sheet Metal Finishing?


Sheet Metal Surface Treatment

Sheet metal surface treatment is the process that involves creating a physical barrier that protects metal against a harsh environment. The core function of surface treatment is to help protect sheet metal against corrosive environment and for aesthetic appearance.

Metal Sheet Finnish

Metal finish is a final step in manufacturing process that give good appearances and environmental protection to metal sheet.

More Resources:

Electrolytic Polishing

Black Oxide Finish

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