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sheet metal fabrication
WANDA-AN
sm-AL010-002
SHEET METAL FABRICATION
Sheet metal Box are integral components in various industries, serving multiple functions such as housing electrical systems,
protecting equipment, and organizing connections.
sheet metal component Distribution Box
Electrical distribution systems often rely heavily on sheet metal components for protection,
durability,and structured installation.
Distribution Boxes / Panels
Sheet metal is used to fabricate enclosures that house circuit breakers and fuses.
Ensures electrical insulation, mechanical protection, and compliance with safety standards.
Typically made from galvanized steel, stainless steel, or powder-coated mild steel.
Switchgear Cabinets
Large enclosures for housing high-voltage or low-voltage switchgear.
Sheet metal offers strength to contain arc flashes and internal faults.
Control Panels
Used in industrial environments for machinery control.
Sheet metal ensures resistance to environmental factors (dust, vibration, etc.).
Busbar Trunking Systems
Sheet metal casings surround copper or aluminum busbars to distribute power.
Provides mechanical protection and containment.
Electrical Enclosures
NEMA/IP-rated enclosures for indoor/outdoor use.
Often made of stainless steel or aluminum for corrosion resistance.
Junction Boxes:
Junction boxes composed of sheet metal are commonly used in electrical,
telecommunications,and industrial applications to house and protect wiring,
connections, and components.Sheet metal junction boxes are durable,
cost-effective, and customizable,making them suitable for various environments.
1. Materials Used
Sheet metal junction boxes are typically made from:
Galvanized Steel: Offers corrosion resistance and strength,ideal for industrial and outdoor use.
Stainless Steel: Highly resistant to rust and chemicals,suitable for harsh environments (food processing,marine).
Aluminum: Lightweight,corrosion-resistant,and good for electrical grounding.
Carbon Steel: Used when strength is prioritized over corrosion resistance (often coated or painted).
2. Manufacturing Process
Cutting: Sheets are cut using laser,plasma,or shearing machines.
Bending/Folding: Press brakes or folding machines shape the metal.
Welding/Fastening: Components are joined via spot welding,seam welding,or mechanical fasteners (screws/rivets).
Finishing: Coating (powder/paint),galvanization,or passivation (for stainless steel) enhances durability.
| 1. Material Options | |||
| Material | Thickness (mm) | Key Properties | Common Applications |
| Galvanized Steel | 0.8 – 3.0 | Corrosion-resistant, cost-effective | Indoor/outdoor electrical enclosures |
| Stainless Steel (304/316) | 1.0 – 3.0 | High corrosion resistance, durable | Harsh environments (chemical, marine) |
| Aluminum (5052/6061) | 1.5 – 4.0 | Lightweight, EMI shielding, non-sparking | Telecom, HVAC, flammable areas |
| Carbon Steel (with coating) | 1.2 – 3.0 | High strength, requires paint/powder coat | Industrial control panels |
| 2. Mechanical Properties | |||
| Property | Galvanized Steel | Stainless Steel 304 | Aluminum 5052 |
| Tensile Strength (MPa) | 300 – 500 | 515 – 720 | 210 – 260 |
| Yield Strength (MPa) | 200 – 350 | 205 – 310 | 90 – 195 |
| Density (g/cm³) | 7.85 | 8 | 2.68 |
| Melting Point (°C) | ~1,500 | ~1,400 | ~600 |
Galvanized Steel: Hot-dip galvanizing (45–80 µm zinc coating).
Stainless Steel: Passivation (removes iron particles).
Aluminum: Anodizing (improves corrosion resistance).
Carbon Steel: Powder coating (60–120 µm epoxy/polyester).
4. Standards & Certifications
Corrosion Resistance: ISO 9227 (salt spray test), ASTM B117 (500+ hours for coated steel).
Fire Safety: UL 94 (flammability), IEC 61439 (electrical enclosures).
Environmental: IP65/IP66 (dust/waterproof), NEMA 4X (corrosive resistance).
5. Fabrication Tolerances
Cutting: ±0.1 mm (laser), ±0.5 mm (plasma).
Bending: ±0.5° angle tolerance, ±0.2 mm bend radius.
Flatness: ≤1 mm/m² after fabrication.
6. Electrical Properties
Conductivity:
Aluminum: ~35% IACS (International Annealed Copper Standard).
Steel: 3–15% IACS (requires grounding lugs).
EMI Shielding: Stainless steel/aluminum preferred for sensitive electronics.
7. Typical Sizes & Configurations
Wall Thickness: 1.2 mm (light-duty) to 3.0 mm (heavy-duty).
Standard Box Sizes:
Small: 100x100x50 mm (terminal boxes).
Large: 600x400x200 mm (control panels).
8. Compliance Marks
UL/CUL Listed: Required for North America.
CE Marking: EU compliance (Low Voltage Directive).
RoHS/REACH: Restriction of hazardous substances.
SHEET METAL FABRICATION
Sheet metal Box are integral components in various industries, serving multiple functions such as housing electrical systems,
protecting equipment, and organizing connections.
sheet metal component Distribution Box
Electrical distribution systems often rely heavily on sheet metal components for protection,
durability,and structured installation.
Distribution Boxes / Panels
Sheet metal is used to fabricate enclosures that house circuit breakers and fuses.
Ensures electrical insulation, mechanical protection, and compliance with safety standards.
Typically made from galvanized steel, stainless steel, or powder-coated mild steel.
Switchgear Cabinets
Large enclosures for housing high-voltage or low-voltage switchgear.
Sheet metal offers strength to contain arc flashes and internal faults.
Control Panels
Used in industrial environments for machinery control.
Sheet metal ensures resistance to environmental factors (dust, vibration, etc.).
Busbar Trunking Systems
Sheet metal casings surround copper or aluminum busbars to distribute power.
Provides mechanical protection and containment.
Electrical Enclosures
NEMA/IP-rated enclosures for indoor/outdoor use.
Often made of stainless steel or aluminum for corrosion resistance.
Junction Boxes:
Junction boxes composed of sheet metal are commonly used in electrical,
telecommunications,and industrial applications to house and protect wiring,
connections, and components.Sheet metal junction boxes are durable,
cost-effective, and customizable,making them suitable for various environments.
1. Materials Used
Sheet metal junction boxes are typically made from:
Galvanized Steel: Offers corrosion resistance and strength,ideal for industrial and outdoor use.
Stainless Steel: Highly resistant to rust and chemicals,suitable for harsh environments (food processing,marine).
Aluminum: Lightweight,corrosion-resistant,and good for electrical grounding.
Carbon Steel: Used when strength is prioritized over corrosion resistance (often coated or painted).
2. Manufacturing Process
Cutting: Sheets are cut using laser,plasma,or shearing machines.
Bending/Folding: Press brakes or folding machines shape the metal.
Welding/Fastening: Components are joined via spot welding,seam welding,or mechanical fasteners (screws/rivets).
Finishing: Coating (powder/paint),galvanization,or passivation (for stainless steel) enhances durability.
| 1. Material Options | |||
| Material | Thickness (mm) | Key Properties | Common Applications |
| Galvanized Steel | 0.8 – 3.0 | Corrosion-resistant, cost-effective | Indoor/outdoor electrical enclosures |
| Stainless Steel (304/316) | 1.0 – 3.0 | High corrosion resistance, durable | Harsh environments (chemical, marine) |
| Aluminum (5052/6061) | 1.5 – 4.0 | Lightweight, EMI shielding, non-sparking | Telecom, HVAC, flammable areas |
| Carbon Steel (with coating) | 1.2 – 3.0 | High strength, requires paint/powder coat | Industrial control panels |
| 2. Mechanical Properties | |||
| Property | Galvanized Steel | Stainless Steel 304 | Aluminum 5052 |
| Tensile Strength (MPa) | 300 – 500 | 515 – 720 | 210 – 260 |
| Yield Strength (MPa) | 200 – 350 | 205 – 310 | 90 – 195 |
| Density (g/cm³) | 7.85 | 8 | 2.68 |
| Melting Point (°C) | ~1,500 | ~1,400 | ~600 |
Galvanized Steel: Hot-dip galvanizing (45–80 µm zinc coating).
Stainless Steel: Passivation (removes iron particles).
Aluminum: Anodizing (improves corrosion resistance).
Carbon Steel: Powder coating (60–120 µm epoxy/polyester).
4. Standards & Certifications
Corrosion Resistance: ISO 9227 (salt spray test), ASTM B117 (500+ hours for coated steel).
Fire Safety: UL 94 (flammability), IEC 61439 (electrical enclosures).
Environmental: IP65/IP66 (dust/waterproof), NEMA 4X (corrosive resistance).
5. Fabrication Tolerances
Cutting: ±0.1 mm (laser), ±0.5 mm (plasma).
Bending: ±0.5° angle tolerance, ±0.2 mm bend radius.
Flatness: ≤1 mm/m² after fabrication.
6. Electrical Properties
Conductivity:
Aluminum: ~35% IACS (International Annealed Copper Standard).
Steel: 3–15% IACS (requires grounding lugs).
EMI Shielding: Stainless steel/aluminum preferred for sensitive electronics.
7. Typical Sizes & Configurations
Wall Thickness: 1.2 mm (light-duty) to 3.0 mm (heavy-duty).
Standard Box Sizes:
Small: 100x100x50 mm (terminal boxes).
Large: 600x400x200 mm (control panels).
8. Compliance Marks
UL/CUL Listed: Required for North America.
CE Marking: EU compliance (Low Voltage Directive).
RoHS/REACH: Restriction of hazardous substances.
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