In metal finishing, the surface is treated in a particular way or a thin layer is applied to the product’s exterior for a specific purpose. Depending on the technique or type of layer applied, finishing your fabricated component can provide durability, protection or a decorative appearance, for example. Hendrick offers several finishing choices for your application, including RoHS (Restriction of Hazardous Substances) compliant options.

BENEFITS OF METAL FINISHING

• Increased durability
• Improved decorative appeal
• Enhanced electrical conductivity
• Higher electrical resistance
• Greater chemical resistance
• Better corrosion resistance

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ABOUT PERFORATED METAL FINISHING

Some finishing techniques — such as polishing, deburring and degreasing — provide a smooth, clean industrial metal finish. Other techniques like powder coating and anodizing are intended to add color, make fabricated products more durable, or offer protection from the elements.

OUR SURFACE FINISHING CAPABILITIES

Hendrick offers a vast array of metal finishing services to meet your needs. With 145+ years of experience and expertise, we are happy to recommend the best custom metal finish for your project and to manage the finishing of your parts or components — from degreasing to providing exactly the right color match.

• Powder Coating
  Applied electrostatically as a powder and then cured under heat, this hard finish is tougher than conventional paint.
• Polishing
  Polishing removes abrasions and scratches from the metal surface, making the finish cleaner and brighter.
• Deburring
  Burrs are the unwanted materials that remain on the metal surface after punching, drilling or grinding. Deburring refers to the removal of these materials.
• Kynar® Painting
  Kynar is a polyvinylidene fluoride (PVDF). This specialty plastic finish offers the highest purity, strength and resistance to acids, heat and smoke.
• Anodizing
  By increasing the thickness of the natural oxide layer on the metal’s surface, this technique creates a durable, corrosion-resistant finish ready for the application of color or a sealant.  
• Electro-Polishing 
  Usually done to stainless steel, electro-polishing chemically mills the surface of the metal to create a smooth and bright industrial metal finish. It can be used to deburr, passivate or polish the surface.
• Plating
  By depositing a thin layer of metal to the substrate’s surface, plating improves corrosion resistance, solderability, wearability, paint adhesion, and provides a decorative appearance. Electro-plating hardens objects, reduces friction and alters conductivity for radiation shielding.
• Degreasing
  Fabricated metal parts are treated to remove grease, oil and dirt before finishing the surface or to protect precision parts.
• Passivating
  Passivation decreases the chemical reactivity of the metal, making its surface more resistant to the elements and extreme environments. It protects against corrosion, creates a smoother appearance, and extends the life of the product.
• Chromating
  A chromate chemical metal coating increases corrosion resistance, provides an excellent base for paint, maintains an electrically conductive surface, and is decorative.
• E-Coating
  Electro-coating or electro-painting is a method of depositing a paint or lacquer coating on the metal surface via electric current. It’s a good option when coating parts that have hard-to-reach areas. The product looks good and resists corrosion for a long period of time.
• Silk Screening
  Because silk screening does not require pressure to print, nor does it require a planar surface, this technique is ideal for printmaking on fabricated metal products.  

CUSTOM FINISHING

Hendrick produces and applies tailor-made graphics, logos and decals to your fabricated metal products to add decoration, communicate warnings and instructions, or promote your business and services. We also color-match the finishing on your products to your company’s color palette. Let us know what you want — our team is happy to collaborate with each and every customer!

Hendrick Manufacturing offers quality design-driven assistance for all projects — from the most basic to those requiring complex and challenging solutions. Our perforated sheet design and sheet metal fabrication engineering assistance ensures that your products are functional, cost-effective, and consistent while meeting your unique needs. We collaborate closely with our customers' engineers at every stage of the product life cycle. Our services for both perforated sheet and value add designs include:

• Prototyping and production engineering support
• Revision control and product data management the production cycle
• Design assistance for manufacturability/cost savings for one-time or repetitive applications
• We accept multiple CAD file formats 

PROTOTYPE ENGINEERING SERVICES

Hendrick’s engineering team has the project experience, technical expertise and manufacturing capabilities to develop a prototype that allows you to go from drawing to delivery in the shortest time possible. We accurately fabricate metal components from various materials using the most suitable processing option, while meeting your precise requirements. 

DESIGN ASSISTANCE SERVICES

Let us know if you need perforated metal design and planning help. With our experience in virtually every industry, chances are good that we’ve worked on a project similar to yours. Our perforated panel design assistance services include:

• Value engineering
• Determination of design feasibility
• Specification of tolerances and dimensions
• Selection of the best material type, thickness and temper
• Assembly and secondary operations (e.g., finishing)
• Realistic lead times for tooling and manufacturing
• Projections of current and future purchases to save time and money 

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TAKING YOUR PROJECT FROM START TO FINISH

Hendrick's engineers successfully steer your project from design through development. Working with us from start to finish keeps your project in budget and on schedule, and results in a high-quality finished product.

We undertake value engineering, which means that we optimize the manufacturing process in order to arrive at a balance between quality and cost, providing you with the best possible overall value. We often modify the original design slightly or adjust the manufacturing process — while maintaining the part's functionality, quality and durability — to save you money and time, so you get your order more quickly and at a lower cost. Hendrick always points out cost savings that can be achieved through altering the material, dimensions, gauge, finishing process and/or packaging — you get only what is needed for your application.

WHY HENDRICK? 

We have 145+ years of experience in engineering practical and cost-effective solutions for a wide range of applications — from the simple to the most complex. Using state-of-the-art machines and first-rate materials, we engineer perforated metal products that precisely suit your application. Hendrick utilizes the latest in CAD/CAM software and other advanced technology to work with your detailed design and produce your components while reducing manufacturing costs. 

We collaborate with you during every stage of product development, from concept and design to prototype and testing through redesign and manufacture. We encourage communication between sales, engineering and manufacturing professionals to ensure the success of every project. Our goal is to provide you with the highest-quality solution — one that meets your precise requirements — at a competitive price.

Hendrick has hundreds of precision, high-speed perforating tools available, allowing us to produce most hole patterns to exacting requirements. Plus, we manufacture specialized tools and punches in-house using state-of-the-art CNC and wire EDM machinery. Our tools are capable of perforating standard and custom holes and patterns of all types — from round and square to slotted, hexagonal and decorative perforations, we do it all.

As our tooling wears, Hendrick replaces components and tools so we always have the right tooling available when needed. Plus, we keep duplicates of tooling for the most popular perforation patterns to guarantee availability and meet fast lead times.

Our Capabilities

With our vast array of equipment, including press brakes, punch presses, laser cutting equipment and so much more, Hendrick precisely perforates and fabricates metal to exacting tolerances and the most demanding specifications. Our professionals are trained to set up and calibrate our equipment quickly and accurately. Count on us to manufacture even your most complex products with total precision, and deliver your order on time and within budget.

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Our buying power results in very competitive pricing and shortened lead times, while allowing us to stock a large inventory of popular perforated materials, in both sheets and coils. Plus, our no-minimum-order policy enables us to offer the same fast delivery and competitive prices on small- and medium-volume orders.

Hendrick helps you determine the best material for your particular application, its operating environment, and your budget and design specs. We provide our customers with an extensive knowledge about perforated metal materials, and we have the processes, equipment and tooling to manufacture your product in a wide range of material thicknesses and widths.

fabricated or finished products. Our perforated sheets are furnished either fully perforated or with margins and blank areas — whatever meets your design and production needs. Sheets are generally made from metal coiled material, and are produced to any length and up to 60" wide.

Perforated Metal Coils

Perforated coils facilitate handling, which speeds up production and makes them the perfect form for OEMs with automated production operations. Hendrick supplies fully perforated or paneled sections in widths to 60" and thicknesses up to 16 gauge. Our goal is to produce perforated coil to suit your specifications, no matter how demanding.

Interested in learning more about our perforated sheet metal coil capabilities? Contact our team of experts at Hendrick Manufacturing.

Founded more than 145 years ago, Hendrick has the experience and expertise to fabricate a myriad of custom products, parts and components from sheet metal. We provide a one-stop shop for custom sheet metal fabrication services for your complete components or as secondary services to our perforating capabilities.

Our metal fabricating capabilities provide complete end-to-end supply chain solutions. Regardless of your part's shape, volume or material, our precision sheet metal fabrication services can reduce labor and time expenditures, while saving you money on your completed assembly. Using state-of-the-art equipment, Hendrick accurately produces quality custom sheet metal fabrications that meet the specifications required by your application.

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Advantages of Working With Hendrick

• Significant tool library
• Large to small components
• Prototype to production
• Partial to complete turnkey contract assembly operations
• Multiple finishing options available

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Broad Range of Fabricating Capabilities

Hendrick has the advanced equipment and tools to fabricate metal to your exacting specifications. Our team can help you with design, engineering and development of your component. With our knowledge and expertise, you can rest assured that you're getting the best solution for your sheet metal fabrication needs.

• Shearing
• Punching
• Bending
• Notching
• Rolling
• Leveling
• Degreasing
• Water jetting
• Laser cutting and etching
• Drilling
• Plasma cutting
• MIG and TIG welding
• Spot welding
• Hardware insertion
• Heat treating
• Turning
• Tapping
• Grinding
• Polishing
• Assembly
• Stamping

Sheet Metal Fabrication and Custom Metal Applications

Hendrick’s flexibility, experience and capabilities as a leading sheet metal fabrication company allow us to produce a variety of components — from standard parts to unique assemblies — for diverse industries. Our sheet metal fabrications include acoustical panels and cabinets, electronic enclosures, medical trays, security screens, retail and so much more!

Various industries use perforated metal to filter debris or liquids, ventilate appliances, separate materials, protect components and attenuate sound. Perforated metal is highly functional and visually interesting, giving it an excellent aesthetic value.

Hendrick Manufacturing can produce infinite patterns, from simple to intricate, in various shapes, sizes and materials, including aluminum and stainless steel. We also offer additional services, including degreasing, in-house cleaning, polishing and deburring. We are dedicated to providing you with top-quality products that meet your needs and specifications.

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Perforated Sheet Metal From Hendrick Manufacturing

Hendrick Manufacturing custom engineers and manufactures perforated metals and panels, and we deliver materials on time and on budget. We have over 145 years of experience, so you can trust our team to meet your needs. Working with Hendrick Manufacturing for your perforated metal needs allows you to take advantage of the following benefits:

• Unlimited patterns: From standard to intricate configurations, Hendrick Manufacturing can perforate materials with any pattern you require, meeting your exact needs.
• Material options: You can choose from an extensive selection of materials when you work with Hendrick Manufacturing.
• Fabricating options: We have extensive value-added fabricating options to complement our perforating capabilities.
• Cost savings: Our speed and flexibility can keep your costs down, allowing you to receive top-quality materials while staying on budget.
• Finishing services: We offer various surface finishing services to meet your needs.

Our Metal Perforating Capabilities

At Hendrick Manufacturing, we have the following capabilities:

• Various metal hole shapes such as square, round, ellipse, slotted, hexagon and decorative options
• Perforation diameters between 0.020 inches and 6 inches
• Sheet metal punching, plasma and precision laser metal cutting services
• Perforated material options such as copper, steel, aluminum, stainless steel and plastic
  • *Note: Not all perforations are available in all materials & thicknesses

Perforated Metal Panel Patterns

As a leader in the design, manufacturing and value-added fabrication of perforated metal products, Hendrick offers the industry's most comprehensive selection of perforated metal sheets or coils. We have hundreds of punches and high-speed perforating tools, allowing us to produce many perforated metal patterns quickly and accurately, including circular or square hole perforated metal sheets. 

If the tool is unavailable, Hendrick's in-house tooling department can build it to accommodate any custom pattern you may require for custom perforated sheet metal. What you see below represents only a small portion of the perforated metal patterns we can manufacture:

Round

Round holes are the most popular and widely used patterns in many applications across a broad industry range, from HVAC and filtration systems to acoustic panels and agricultural equipment. With their simple shape, round patterns provide maximized open areas and increased strength-to-weight ratios. 

Round patterns also offer better structural integrity compared to other shapes. The circular shape distributes stress evenly across the perforated metal, minimizing the risk of deformation or failure under pressure. This feature makes round perforations ideal for applications where strength and durability are crucial.

In addition, round perforations provide increased visibility through the perforated metal. The circular shape allows more light to pass through the panel, making it practical for applications requiring transparency or aesthetic appeal. Round patterns are also among the most efficient to produce and, in most cases, the least expensive hole shape.

Square

Square patterns are highly versatile because of the many different nesting possibilities. This feature is especially beneficial for applications requiring increased drainage or airflow. Like round holes, square shapes can provide excellent strength and stability depending on the chosen pattern.

The straight edges of square perforations allow for easy alignment with other components, so they are ideal for equipment with assembled components, like grills or guards on machinery or appliances. Square patterns also resist impact loads and block trespassers when spaced appropriately.

Hexagonal

Hexagon patterns can pack together tighter to produce more open area than many round or square configurations. Hexagonal perforations allow air, light or sound to pass through the panel. They are perfect for applications where ventilation or transparency are crucial.

Depending on the layout, hexagonal shapes can distribute stress evenly across a panel, making it resistant to deformation while providing strength and stability for applications like grating or ceiling panels. Additionally, hexagonal patterns offer an aesthetically pleasing appearance with a higher open-area percentage when airflow is critical.

Slotted

Slotted holes feature elongated and rectangular patterns that produce a sleek appearance while allowing optimal airflow. These linear openings work well in various configurations for applications that have specific functionality requirements, including filtration, drainage systems and ventilation. Slotted patterns are highly beneficial for directional sorting and the grating of solid objects. 

The elongated nature of slotted holes allows for a larger open area, enabling maximum passage of light, sound or air. This feature makes slotted holes desirable for applications requiring high transparency levels or optimal acoustic performance. Hendrick Manufacturing can tailor the slot length and width to specific requirements and patterns for highly precise or specialized applications.

Diamond

Diamond patterns stand out over other shapes for their unique aesthetic. The repeated diamond geometries create a visually appealing pattern that makes them highly popular for architectural designs or decorative purposes. The diamond-shaped perforations also balance openness and coverage to deliver the required airflow levels, light transmission or visibility.

Ellipse

An ellipse's elongated and curved geometry creates unique patterns, making these configurations desirable for applications that prioritize aesthetics, like architectural facades or decorative panels. An ellipse's oval shape also allows for specific levels of airflow, light transmission or visibility, offering a combination of openness, transparency and coverage. This benefit makes ellipse patterns ideal for applications requiring a balance between functionality and visual appeal.

Additionally, ellipse patterns offer versatility in terms of customization. The ellipse size, orientation and spacing can be adjusted to meet specific requirements, allowing for tailored solutions for different applications.

Designer

Designer or ornamental patterns can create a unique and customized look for a specific product or application. These intricate and artistic designs add a touch of elegance and sophistication to the perforated metal panel, making them ideal for projects where aesthetics are critical, including architectural features, high-end furniture and interior design components.

Specialized designer patterns can offer unique functional benefits. Depending on the application's requirements and functionality, these panel patterns can be tailored to optimize airflow, light diffusion or acoustics. This capability ensures the perforated metal looks visually appealing and performs optimally in its intended function.

POPULAR PERFORATED PATTERNS

View All Perforated Patterns

Perforated Metal Material Options

Hendrick Manufacturing's long-lasting partnerships with some of the world's top metal suppliers enable us to stock a diverse inventory of competitively priced materials. Our experts have decades of combined experience helping customers choose the most practical and effective materials for their needs. We can evaluate your project's design specifications, functionality requirements, operating environment and budget to determine an optimal solution.

Our extensive lineup of machinery and equipment — combined with our advanced manufacturing processes and precision tooling — are compatible with numerous metals in sheet or coil form, including:

• 3003, 5052, 6061 and other common aluminum alloys.
• Cold-rolled and hot-rolled steel.
• G90, G60, electro-galvanized and other grades of galvanized steel.
• 304, 316, 430 and other grades of stainless steel.
• Additional materials like brass, copper and Monel® nickel-copper alloys.

Our Perforated Metal Sheet Processing Capabilities

Hendrick adapts the metal perforating process to meet each project's exact requirements for hole placement, materials and part shape. Plus, we can create perforated patterns with a customer's desired blank areas, margins, hole spacing and more — all to very tight tolerances.

We manufacture perforated metal from sheets or coils using electronically controlled presses. Every press has a specific working width and punches hole patterns accurately. Different machine operations can perforate materials, and each one has its manufacturing advantages.

ALL-ACROSS, FULL-WIDTH PERFORATING

All-across, full-width perforating is our core capability. All-across presses quickly and correctly produce the greatest number of holes per hit — up to 1,600 per stroke. All-across pressing is the fastest, most efficient and most economical perforating method.

We typically use the all-across, full-width perforating process for larger runs. Our high-speed perforating presses can punch material up to 60 inches wide in thicknesses ranging from 0.002 inches to 0.25 inches. Punch hole size dimensions range between 0.020 inches and 2.0 inches in diameter. All-across punches punch up to 600 strokes in 60 seconds, and thus thousands of holes per minute.

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At Hendrick Manufacturing, our capabilities go way beyond perforation. We offer an array of high-tech fabrication options that reduce labor and time, and provide cost savings for your completed assembly. Plus, our range of services goes even further — you can select your materials and take advantage of our tooling, engineering and design support, and finishing resources. Our experience in working with multiple industries gives us a unique perspective on the latest manufacturing technologies and applications, so no matter what your project or market, Hendrick has the optimal solution for you.

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