Slotted Hole Perforated Metal
Slotted hole perforated metal is manufactured by punching elongated slots into metal sheets. Compared with round hole perforated metal, slotted perforations provide greater open area in one direction and are particularly suitable for screening, dewatering, filtration, and grain processing applications.
Maidong supplies custom slotted hole perforated sheets in stainless steel, galvanized steel, aluminum, and carbon steel with various slot widths, lengths, pitches, and sheet thicknesses.
What Is Slotted Hole Perforated Metal?
Slotted hole perforated metal is produced by punching elongated slots into metal sheets using precision perforating equipment. The slot openings can be arranged in straight rows or staggered patterns depending on the required screening efficiency and open area.
Compared with round hole perforated sheets, slotted perforations provide a larger opening area in one direction, making them particularly suitable for screening, separation, dewatering, and material handling applications.
Available in stainless steel, galvanized steel, aluminum, and carbon steel, slotted hole perforated metal is widely used in grain processing, mining, water treatment, filtration equipment, and
Specifications of Slotted Hole Perforated Metal
Slotted hole perforated metal sheets are available in various slot dimensions, materials, thicknesses, and open area configurations to meet industrial screening, dewatering, filtration, and processing requirements.
| Specification | Available Range |
|---|---|
| Material | Stainless Steel 304, 316, Carbon Steel, Galvanized Steel, Aluminum |
| Slot Width | 0.5mm – 30mm |
| Slot Length | 2mm – 150mm |
| Sheet Thickness | 0.3mm – 12mm |
| Open Area | 10% – 70% |
| Sheet Width | Up to 1500mm |
| Sheet Length | Up to 3000mm |
| Slot Arrangement | Straight, Staggered |
| Surface Finish | Mill Finish, Powder Coated |
| Fabrication Service | Cutting, Rolling, Welding, Bending |
Common Slot Configurations
| Slot Size | Typical Application |
|---|---|
| 1×10 mm | Fine screening |
| 2×20 mm | Grain cleaning |
| 3×20 mm | Seed processing |
| 3×25 mm | Dewatering equipment |
| 4×30 mm | Industrial screening |
| Custom Sizes | OEM projects |
Available Materials
Stainless Steel
Excellent corrosion resistance and long service life.
Galvanized Steel
Economical solution for agricultural and industrial applications.
Aluminum
Lightweight and suitable for ventilation systems.
Carbon Steel
High strength and cost-effective for general industrial use.
Perforated Metal Technical Specifications
| Material | Thickness Range | Hole Diameter | Hole Pattern | Open Area | Standard Sheet Size | Applications |
|---|---|---|---|---|---|---|
| Stainless Steel 304 / 316 | 0.3–6.0 mm | 0.5–50 mm | Round, Slotted, Square, Hexagonal | 20%–70% | 1000×2000 mm, 1220×2440 mm, Custom | Filtration, ventilation, machine guards |
| Aluminum | 0.5–5.0 mm | 1–50 mm | Round, Slotted, Decorative | 25%–65% | 1000×2000 mm, 1220×2440 mm, Custom | Architectural panels, ceilings, decoration |
| Galvanized Steel | 0.5–6.0 mm | 1–60 mm | Round, Slotted, Square | 20%–60% | 1000×2000 mm, 1220×2440 mm, Custom | Protective covers, fencing, ventilation |
| Carbon Steel | 0.8–8.0 mm | 2–80 mm | Round, Slotted, Square | 20%–60% | Custom sheet size available | Heavy-duty protection, screening, industrial use |
Applications of Slotted Hole Perforated Metal
Slotted hole perforated metal is widely used in industries requiring efficient screening, separation, drainage, and material processing. The elongated slot design provides excellent flow characteristics while maintaining structural strength.
Grain Cleaning Equipment
Slotted perforated sheets are commonly used in grain cleaning and sorting machinery for separating impurities and improving processing efficiency.
Seed Processing Systems
The precise slot openings help classify seeds and agricultural products according to size requirements.
Dewatering Equipment
The slot pattern allows water to pass through efficiently while retaining solid materials, making it suitable for dewatering applications.
Mining & Aggregate Screening
Widely used in mining equipment and screening machines for material classification and separation.
Water Treatment Systems
Slotted perforated metal is often used in filtration and water treatment equipment where controlled flow and drainage are required.
Industrial Filtration Equipment
Used as support structures for filter elements, filter cylinders, and customized filtration assemblies.
Industries Served
- Agriculture
- Food Processing
- Mining
- Water Treatment
- Chemical Processing
- Environmental Protection
- Industrial Manufacturing
Why Slotted Holes?
Compared with round hole perforated metal, slotted perforations provide:
✅ Better drainage performance
✅ Improved material flow
✅ Higher screening efficiency
✅ Larger opening area in one direction
✅ Reduced clogging in many applications
Slot Patterns & Open Area
Slotted hole perforated metal can be manufactured in different slot arrangements to achieve specific screening efficiency, drainage performance, and open area requirements.
The most common configurations are straight pattern and staggered pattern.
Straight Slot Pattern
In a straight pattern, slots are aligned in parallel rows and columns.
Benefits
- Uniform appearance
- Easy fabrication
- Consistent screening performance
- Suitable for grain and seed processing
Typical Applications
- Grain cleaning equipment
- Agricultural machinery
- Industrial screening systems
Staggered Slot Pattern
In a staggered pattern, slots are offset between rows to increase open area and material flow.
Benefits
- Higher open area
- Better drainage performance
- Improved material throughput
- Reduced clogging risk
Typical Applications
- Dewatering systems
- Mining equipment
- Water treatment systems
- Heavy-duty screening
Open Area Options
The open area percentage affects flow rate, drainage efficiency, and screening performance.
| Open Area | Recommended Application |
|---|---|
| 10% – 20% | Heavy-duty screening |
| 20% – 35% | Grain processing |
| 35% – 50% | Industrial filtration |
| 50% – 70% | Drainage and ventilation |
Custom Slot Design Available
Maidong can manufacture slotted perforated sheets with customized:
- Slot Width
- Slot Length
- Slot Pitch
- Open Area
- Sheet Thickness
- Sheet Dimensions
according to customer drawings and project requirements.
Different slot arrangements can significantly influence screening efficiency and drainage performance. Selecting the appropriate slot pattern helps improve productivity and extend equipment service life in industrial processing applications.
Why Choose Maidong?
Maidong specializes in perforated metal manufacturing and custom perforation solutions for industrial applications.
With advanced perforating equipment and flexible production capabilities, we provide high-quality slotted hole perforated metal sheets for screening, dewatering, filtration, and processing industries worldwide.
Custom Slot Sizes
Available slot widths, lengths, pitches, and open area configurations can be customized according to project requirements.
Multiple Material Options
- Stainless Steel 304
- Stainless Steel 316
- Carbon Steel
- Galvanized Steel
- Aluminum
Strict Quality Control
Every batch is inspected for:
- Slot accuracy
- Sheet thickness
- Flatness
- Surface quality
- Dimensional tolerance
Flexible Production
Suitable for both small quantity projects and bulk industrial orders.
Fast Delivery
Efficient production planning helps ensure reliable lead times.
Global Export Experience
Products are supplied to customers in Europe, Southeast Asia, the Middle East, and other international markets.
Get a Quote for Slotted Hole Perforated Metal
Looking for a reliable supplier of slotted hole perforated metal sheets?
Contact Maidong today for pricing, technical support, and custom manufacturing solutions.
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