Expanded Metal | Expanded Metal Mesh Sheet Manufacturer
Our expanded metal is manufactured by simultaneously slitting and stretching metal sheets to form an open mesh pattern without welding or weaving.
The continuous diamond-shaped structure provides strength, rigidity, ventilation, light transmission and a high strength-to-weight ratio. Expanded metal mesh can be supplied in different materials, strand sizes, mesh openings, sheet dimensions and surface treatments for industrial, architectural, security and engineering applications.
We manufacture expanded metal mesh, expanded metal sheets, steel expanded metal, stainless steel expanded metal and aluminum expanded metal for distributors, fabricators, contractors and project customers worldwide.
As a professional expanded metal manufacturer in China, we provide standard and custom expanded metal according to your required material, SWD, LWD, strand width, strand thickness, sheet size and application.
What Is Expanded Metal?
Expanded metal is a sheet metal product that is cut and stretched to create a continuous open mesh structure.
Unlike welded wire mesh, expanded metal does not use separate wires welded together. Unlike woven wire mesh, it does not rely on interlaced wires.
The manufacturing process creates an integral metal mesh with interconnected strands, making expanded metal suitable for applications requiring strength, airflow, visibility and mechanical protection.
Expanded metal is available in different patterns and materials and can be supplied in sheet or fabricated forms.
Common applications include:
- Security fencing
- Machine guards
- Walkway panels
- Industrial screens
- Ventilation panels
- Architectural facades
- Ceiling panels
- Filters and screens
- Equipment protection
- Decorative metal panels
How Is Expanded Metal Made?
Expanded metal is produced from a solid metal sheet through a cutting and stretching process.
1. Sheet Preparation
The selected metal sheet or coil is prepared according to the required material, thickness and production specification.
2. Slitting
The sheet is simultaneously cut according to the required mesh pattern.
3. Stretching
The cut sheet is stretched to form a continuous mesh structure.
4. Mesh Forming
The stretching operation creates interconnected strands and openings, commonly forming a diamond-shaped pattern.
5. Flattening or Leveling
Depending on the product type, the expanded metal may remain in its raised form or be flattened to create a flatter surface.
6. Cutting and Finishing
Finished sheets are cut to the required dimensions and processed according to the customer’s requirements.
Expanded Metal Structure
The geometry of expanded metal is normally specified by several important dimensions.
SWD – Short Way of Diamond
SWD refers to the short dimension of the diamond-shaped opening.
LWD – Long Way of Diamond
LWD refers to the long dimension of the diamond-shaped opening.
Strand Width
Strand width is the width of the metal strip forming the mesh structure.
Strand Thickness
Strand thickness refers to the thickness of the original metal sheet or resulting strand, depending on the specification method.
Overall Sheet Thickness
The finished expanded metal thickness depends on the original material and production process.
These dimensions determine the opening pattern, weight, rigidity, appearance and application of the expanded metal.
Expanded Metal Specifications
| Item | Specification |
|---|---|
| Product | Expanded Metal / Expanded Metal Mesh |
| Mesh Pattern | Diamond / Customized |
| Product Form | Raised / Flattened |
| Material | Carbon Steel / Galvanized Steel / Stainless Steel / Aluminum |
| Sheet Thickness | Customizable |
| SWD | Customizable |
| LWD | Customizable |
| Strand Width | Customizable |
| Strand Thickness | Customizable |
| Sheet Length | Customizable |
| Sheet Width | Customizable |
| Surface Treatment | Mill Finish / Galvanized / PVC Coated / Powder Coated / Customized |
| Open Area | According to Mesh Design |
| Sheet Form | Sheet / Coil |
| Edge | Standard / Cut / Customized |
| OEM | Available |
| Custom Manufacturing | Available |
Actual specifications can be manufactured according to your drawings, application and project requirements.
Types of Expanded Metal
Raised Expanded Metal
Raised expanded metal retains the natural raised mesh structure created during the expanding process.
The three-dimensional surface provides a strong and rigid configuration and is commonly used for security fencing, machine guards, platforms, screens and industrial applications.
Flattened Expanded Metal
Flattened expanded metal is processed through a leveling or flattening operation to produce a flatter surface.
It is commonly selected for applications where a flatter appearance or smoother working surface is preferred.
Flattened expanded metal is widely used for:
- Screens
- Guards
- Architectural panels
- Decorative applications
- Equipment protection
- Industrial fabrication
Expanded Metal Materials
Carbon Steel Expanded Metal
Carbon steel expanded metal is a cost-effective option for many industrial and general-purpose applications.
It can be supplied with different surface treatments depending on the required corrosion resistance and environment.
Galvanized Expanded Metal
Galvanized expanded metal is supplied with a zinc coating to improve corrosion resistance.
It is suitable for selected outdoor, construction, ventilation, fencing and industrial applications where additional protection against corrosion is required.
Stainless Steel Expanded Metal
Stainless steel expanded metal provides higher corrosion resistance compared with ordinary carbon steel.
Common stainless steel grades include 304 and 316, subject to project requirements.
Typical applications include:
- Food processing
- Chemical facilities
- Water treatment
- Architectural applications
- Coastal environments
- Industrial screens
Aluminum Expanded Metal
Aluminum expanded metal offers a lightweight alternative for applications where low weight and corrosion resistance are important.
It is commonly used for architectural panels, screens, ventilation and decorative applications.
Expanded Metal vs. Welded Wire Mesh
Expanded metal and welded wire mesh are different manufacturing products.
| Feature | Expanded Metal | Welded Wire Mesh |
|---|---|---|
| Manufacturing | Slitting and stretching sheet | Welding individual wires |
| Structure | Continuous metal sheet | Separate welded wires |
| Welding | No welded joints | Welded intersections |
| Pattern | Usually diamond-shaped | Usually square or rectangular |
| Material Utilization | Continuous sheet structure | Wire-based structure |
| Applications | Guards, screens, fencing, panels | Fencing, cages, reinforcement |
| Surface | Raised or flattened | Generally flat |
| Custom Pattern | Available | Available |
Expanded metal can provide a continuous mesh structure without welded joints, while welded mesh may be preferred when precise square or rectangular openings are required.
Expanded Metal vs. Perforated Metal
| Feature | Expanded Metal | Perforated Metal |
|---|---|---|
| Manufacturing | Slitting and stretching | Punching |
| Openings | Diamond or custom pattern | Round, square, slotted and custom |
| Material Structure | Continuous interconnected strands | Sheet with punched holes |
| Strength-to-Weight | High | Depends on pattern |
| Airflow | Good | Good |
| Security Visibility | Available | Available |
| Typical Uses | Guards, fencing, screens | Filters, panels, ventilation |
| Waste During Production | Low compared with punching | Depends on hole pattern |
The choice between expanded metal and perforated metal depends on the required opening pattern, strength, appearance, airflow and fabrication method.
Expanded Metal Mesh Sizes
Expanded metal sizes can be described using several parameters.
Important specifications include:
Mesh Opening
The opening dimensions determine visibility, ventilation, airflow and overall appearance.
SWD and LWD
The short way and long way of diamond measurements define the geometry of the mesh opening.
Strand Width
Strand width affects the visual pattern and structural characteristics of the mesh.
Sheet Thickness
Material thickness influences weight, rigidity and suitability for different applications.
Sheet Size
Standard or custom sheet dimensions can be supplied to reduce cutting and installation requirements.
We can manufacture custom expanded metal mesh according to your required opening, strand dimensions and sheet size.
Why Choose Our Expanded Metal?
Continuous Mesh Structure
The manufacturing process creates interconnected strands without welded intersections, providing an integral metal mesh structure.
High Strength-to-Weight Ratio
The open mesh pattern helps reduce material weight while maintaining useful rigidity for many applications.
Excellent Ventilation
The open structure allows air, light and sound to pass through, making expanded metal suitable for ventilation and screening applications.
Multiple Materials
Carbon steel, galvanized steel, stainless steel and aluminum options are available.
Raised and Flattened Options
Customers can choose raised expanded metal or flattened expanded metal according to application and appearance requirements.
Custom Manufacturing
Mesh opening, SWD, LWD, strand dimensions, material, sheet size and surface treatment can all be customized.
Factory Direct Supply
As a professional expanded metal manufacturer in China, we provide factory-direct production for distributors, contractors, fabricators and engineering projects.
Expanded Metal Applications
Security Fencing
Expanded metal panels can be fabricated into security fencing and screening systems where visibility, ventilation and physical protection are required.
Machine Guards
Expanded metal is commonly used for machine guards and protective covers around industrial equipment.
Walkway and Platform Panels
Heavy-duty expanded metal can be used for selected industrial walkways, platforms and access structures.
Ventilation Screens
The open mesh structure allows airflow while providing physical screening.
Architectural Facades
Flattened or decorative expanded metal can be used as facade panels, sun screens and architectural elements.
Ceiling Panels
Expanded metal can be used for suspended ceiling systems and decorative architectural panels.
Equipment Protection
Expanded metal panels can be fabricated into protective covers, enclosures and shields for machinery and equipment.
Filters and Screens
Selected expanded metal specifications can be used as supporting screens, filters and separation components.
Decorative Panels
Different mesh patterns, materials and finishes allow expanded metal to be used in interior and exterior decorative applications.
Expanded Metal for Security Fencing
Expanded metal fencing provides an alternative to chain link fencing and welded wire mesh for certain security and architectural applications.
The continuous mesh structure offers:
- Strong physical structure
- Good visibility
- Ventilation
- Difficult climbing geometry
- Modern industrial appearance
- Customizable mesh openings
For higher-security installations, expanded metal panels can be integrated with suitable posts, frames, gates and other perimeter security components.
Expanded Metal Manufacturing Process
1. Raw Material Inspection
Metal sheets or coils are inspected for material, thickness and surface condition before production.
2. Slitting and Expanding
The sheet is simultaneously slit and stretched to form the required mesh opening.
3. Mesh Formation
The production line controls the diamond dimensions, strand width and overall mesh geometry.
4. Flattening
Where required, raised expanded metal is passed through a flattening process to produce a flatter surface.
5. Sheet Cutting
The finished mesh is cut into standard or customized sheet dimensions.
6. Surface Treatment
Galvanizing, coating, painting or other specified finishes can be applied according to requirements.
7. Quality Inspection
Finished products are inspected for mesh dimensions, strand dimensions, sheet size and surface condition.
8. Packing
Products are bundled, palletized or packed according to product type and export requirements.
Quality Control
Our inspection process can include:
- Raw material inspection
- Sheet thickness inspection
- SWD inspection
- LWD inspection
- Strand width inspection
- Strand thickness inspection
- Mesh opening inspection
- Sheet dimension inspection
- Surface treatment inspection
- Visual inspection
- Packing inspection
For project orders, additional inspection requirements can be discussed before production.
Custom Expanded Metal Manufacturing
Different applications require different mesh sizes, materials and sheet dimensions.
We provide custom expanded metal according to:
- Material
- Sheet thickness
- SWD
- LWD
- Strand width
- Strand thickness
- Sheet length
- Sheet width
- Raised or flattened structure
- Surface treatment
- Open area
- Edge treatment
- Packing requirements
Send us your drawings, technical specifications or required dimensions and we can prepare a customized quotation.
Expanded Metal Packaging
Expanded metal sheets can be packed according to the product dimensions, material and shipping requirements.
Common packing options include:
- Steel strapping
- Wooden pallets
- Steel pallets
- Bundled sheets
- Protective wrapping
- Customized export packing
For container orders, we can optimize packing and loading according to sheet dimensions and shipping requirements.
Expanded Metal Manufacturer in China
We are a professional expanded metal and wire mesh manufacturer in China, supplying expanded metal mesh, welded wire mesh, fencing products, gabion systems, razor wire and other metal mesh products.
Our manufacturing capability allows us to provide standard and customized expanded metal for industrial, architectural, construction and security applications.
We work with:
- Metal distributors
- Fence manufacturers
- Steel fabricators
- Construction companies
- Industrial contractors
- Architectural contractors
- Engineering companies
- Importers
- Wholesalers
Whether you need expanded metal sheets, expanded metal mesh, galvanized expanded metal, stainless steel expanded metal or custom expanded metal, we can manufacture according to your specifications.
Expanded Metal FAQ
What is expanded metal?
Expanded metal is a sheet metal product manufactured by simultaneously cutting and stretching metal sheet to form an open mesh pattern.
How is expanded metal made?
Expanded metal is made by slitting and stretching a metal sheet without welding or weaving separate wires together.
What is the difference between raised and flattened expanded metal?
Raised expanded metal retains the raised surface created during production, while flattened expanded metal is processed to produce a flatter surface.
What materials are available for expanded metal?
Common materials include carbon steel, galvanized steel, stainless steel and aluminum. Other materials may be available according to project requirements.
What is SWD in expanded metal?
SWD means Short Way of Diamond and refers to the shorter dimension of the diamond-shaped mesh opening.
What is LWD in expanded metal?
LWD means Long Way of Diamond and refers to the longer dimension of the diamond-shaped mesh opening.
Can expanded metal be used for fencing?
Yes. Expanded metal can be fabricated into fencing and screening panels for selected security, architectural and industrial applications.
What is galvanized expanded metal?
Galvanized expanded metal is steel expanded metal with a zinc coating designed to improve corrosion resistance.
Can you supply stainless steel expanded metal?
Yes. Stainless steel expanded metal can be supplied in different grades, including commonly requested grades such as 304 and 316, subject to project requirements.
Can you manufacture custom expanded metal?
Yes. We can customize material, thickness, SWD, LWD, strand dimensions, sheet size, surface treatment and other specifications.
What information is needed for an expanded metal quotation?
Please provide the material, sheet thickness, SWD, LWD, strand dimensions, sheet size, quantity, surface treatment and application. Drawings or samples are also helpful for custom products.
Get a Factory Quote for Expanded Metal
Looking for a reliable expanded metal manufacturer in China?
Send us your required material, mesh opening, sheet thickness, dimensions and quantity.
We can provide:
Factory Pricing
Custom Expanded Metal
Galvanized Expanded Metal
Stainless Steel Expanded Metal
Flattened Expanded Metal
Raised Expanded Metal
OEM Manufacturing
Export Packing
Container Loading
Project Orders
Request a Quote Today
Send us your specifications, drawings or project requirements and our team will provide a suitable expanded metal solution and factory quotation.
